WO1996002021A1 - Element initial pour plaque lithographique et procede de preparation de ladite plaque - Google Patents
Element initial pour plaque lithographique et procede de preparation de ladite plaque Download PDFInfo
- Publication number
- WO1996002021A1 WO1996002021A1 PCT/JP1995/001374 JP9501374W WO9602021A1 WO 1996002021 A1 WO1996002021 A1 WO 1996002021A1 JP 9501374 W JP9501374 W JP 9501374W WO 9602021 A1 WO9602021 A1 WO 9602021A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- lithographic printing
- printing plate
- layer
- acid
- Prior art date
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- 230000004044 response Effects 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- RAPZEAPATHNIPO-UHFFFAOYSA-N risperidone Chemical compound FC1=CC=C2C(C3CCN(CC3)CCC=3C(=O)N4CCCCC4=NC=3C)=NOC2=C1 RAPZEAPATHNIPO-UHFFFAOYSA-N 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 229940081623 rose bengal Drugs 0.000 description 1
- AZJPTIGZZTZIDR-UHFFFAOYSA-L rose bengal Chemical compound [K+].[K+].[O-]C(=O)C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1C1=C2C=C(I)C(=O)C(I)=C2OC2=C(I)C([O-])=C(I)C=C21 AZJPTIGZZTZIDR-UHFFFAOYSA-L 0.000 description 1
- 229930187593 rose bengal Natural products 0.000 description 1
- STRXNPAVPKGJQR-UHFFFAOYSA-N rose bengal A Natural products O1C(=O)C(C(=CC=C2Cl)Cl)=C2C21C1=CC(I)=C(O)C(I)=C1OC1=C(I)C(O)=C(I)C=C21 STRXNPAVPKGJQR-UHFFFAOYSA-N 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 150000003329 sebacic acid derivatives Chemical class 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 150000003336 secondary aromatic amines Chemical class 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical compound [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- WSFQLUVWDKCYSW-UHFFFAOYSA-M sodium;2-hydroxy-3-morpholin-4-ylpropane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(O)CN1CCOCC1 WSFQLUVWDKCYSW-UHFFFAOYSA-M 0.000 description 1
- MLVYOYVMOZFHIU-UHFFFAOYSA-M sodium;4-[(4-anilinophenyl)diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(S(=O)(=O)[O-])=CC=C1N=NC(C=C1)=CC=C1NC1=CC=CC=C1 MLVYOYVMOZFHIU-UHFFFAOYSA-M 0.000 description 1
- 235000011076 sorbitan monostearate Nutrition 0.000 description 1
- 239000001587 sorbitan monostearate Substances 0.000 description 1
- 229940035048 sorbitan monostearate Drugs 0.000 description 1
- 229960005078 sorbitan sesquioleate Drugs 0.000 description 1
- 235000019337 sorbitan trioleate Nutrition 0.000 description 1
- 229960000391 sorbitan trioleate Drugs 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- 150000003900 succinic acid esters Chemical class 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- UJMBCXLDXJUMFB-GLCFPVLVSA-K tartrazine Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C1=NN(C=2C=CC(=CC=2)S([O-])(=O)=O)C(=O)C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 UJMBCXLDXJUMFB-GLCFPVLVSA-K 0.000 description 1
- 229960000943 tartrazine Drugs 0.000 description 1
- 239000004149 tartrazine Substances 0.000 description 1
- 235000012756 tartrazine Nutrition 0.000 description 1
- AUHHYELHRWCWEZ-UHFFFAOYSA-N tetrachlorophthalic anhydride Chemical compound ClC1=C(Cl)C(Cl)=C2C(=O)OC(=O)C2=C1Cl AUHHYELHRWCWEZ-UHFFFAOYSA-N 0.000 description 1
- 229940072958 tetrahydrofurfuryl oleate Drugs 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- 125000003866 trichloromethyl group Chemical group ClC(Cl)(Cl)* 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- BZVJOYBTLHNRDW-UHFFFAOYSA-N triphenylmethanamine Chemical compound C=1C=CC=CC=1C(C=1C=CC=CC=1)(N)C1=CC=CC=C1 BZVJOYBTLHNRDW-UHFFFAOYSA-N 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
- NCPXQVVMIXIKTN-UHFFFAOYSA-N trisodium;phosphite Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])[O-] NCPXQVVMIXIKTN-UHFFFAOYSA-N 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- ROVRRJSRRSGUOL-UHFFFAOYSA-N victoria blue bo Chemical compound [Cl-].C12=CC=CC=C2C(NCC)=CC=C1C(C=1C=CC(=CC=1)N(CC)CC)=C1C=CC(=[N+](CC)CC)C=C1 ROVRRJSRRSGUOL-UHFFFAOYSA-N 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/095—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having more than one photosensitive layer
- G03F7/0952—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having more than one photosensitive layer comprising silver halide or silver salt based image forming systems, e.g. for camera speed exposure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
- B41C1/1008—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
- B41C1/1033—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials by laser or spark ablation
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2014—Contact or film exposure of light sensitive plates such as lithographic plates or circuit boards, e.g. in a vacuum frame
- G03F7/2016—Contact mask being integral part of the photosensitive element and subject to destructive removal during post-exposure processing
- G03F7/202—Masking pattern being obtained by thermal means, e.g. laser ablation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/1053—Imaging affecting physical property or radiation sensitive material, or producing nonplanar or printing surface - process, composition, or product: radiation sensitive composition or product or process of making binder containing
- Y10S430/1055—Radiation sensitive composition or product or process of making
- Y10S430/127—Spectral sensitizer containing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/145—Infrared
Definitions
- the present invention relates to a lithographic printing plate precursor from which a high resolution can be obtained, a method of preparing a lithographic printing plate using the same, and a lithographic printing plate exposure apparatus used in the method. '' Background technology
- lithographic printing plates have been prepared by bringing a transparent original (negative or positive film, etc.) into close contact with a plate material such as an aluminum plate or a zinc plate coated with a photosensitive layer, and exposing the image.
- a method of performing a hydrophilic treatment or the like is used.
- a positive photosensitive lithographic printing plate is one in which an ink receptive photosensitive layer that is solubilized by image exposure with actinic rays such as ultraviolet rays is formed on a hydrophilic support, and the photosensitive layer is exposed to an image.
- the photosensitive layer in the non-image area When developing with an alkaline developer, the photosensitive layer in the non-image area (exposed area) is removed leaving the image area (unexposed area), and the surface of the hydrophilic support is exposed.
- the non-image area retains water and repels oil-based ink.
- the area (image area) where the photosensitive layer has not been removed by development is lipophilic, so it repels water and accepts ink.
- the difference in hydrophilicity and lipophilicity between the image area and the non-image area is used in lithographic printing.
- a negative-working photosensitive lithographic printing plate the photosensitive layer in the exposed area (image area) is hardened, and the photosensitive layer in the unexposed area (non-image area) is removed with an image liquid. Used.
- editing typesetting of printed matter which is the pre-process of printing plate creation, uses computer typesetting system (CTS), which combines a computer and an automatic photo-typesetting machine.
- CTS computer typesetting system
- electronic typesetting and DTP (desktop) Top publishing is also increasing.
- Data edited using such a computer is usually created as an original photo film. Therefore, if a plate material that can be directly made from output data from a CTS or electronic typesetting machine is available, the process can be further shortened, Intermediate materials can be saved.
- development of plate materials using organic semiconductors and silver halide photographic light-sensitive materials has been promoted and has been announced by each company, but it requires a new processing step. In addition, it has problems such as not being able to obtain sufficient printing durability, and has not yet become widespread as a replacement for the PS version.
- the heat-sensitive recording, development, direct image is obtained by the thermal energy of the input signal without fixing a dry method that does not require chemical treatment, a facsimile, a force which is widely used in such printers one?
- the laser one beam is irradiated to the thermal transfer material, to convert the laser one beam in record material to heat, it becomes so that the system power 5 'using obtain a thermal transfer recording.
- This laser thermal transfer method is capable of condensing laser light used for energy supply to several meters / meter, enabling high-resolution recording, and is being used in the printing industry.
- Japanese Patent Publication No. 51-6568 discloses a technique using a metal vapor deposition film of aluminum or copper or a coating film in which a carbon black is dispersed in an organic solvent-soluble binder as a perforated light-shielding layer.
- a first object of the present invention is to provide a method for producing a lithographic printing plate directly from a digital image signal without using a film which is an intermediate material in a plate making process.
- a second object is to provide a technology that improves the above-mentioned problems of the known technology, that is, a method of directly producing a lithographic printing plate from a digital image signal, wherein a perforated light-shielding layer is provided. forming force? are industrially easily and inexpensively, without the step of removing only the mask layer in the unexposed portion, there is no adverse effect on the photosensitive layer by the formation of perforated shielding layer, perforations in the developing process of the photosensitive layer
- An object of the present invention is to provide a technique capable of sufficiently removing an unperforated portion of a conductive light-shielding layer.
- the object of the present invention is achieved by the following constitutions.
- a lithographic printing plate precursor having at least a photosensitive layer and a perforated light-shielding layer on a support, exposing the perforated light-shielding layer to light having a first wavelength, and perforating the image-wise, The entire surface of the photosensitive layer is irradiated with light having a wavelength of 2, and only the portion of the photosensitive layer where the perforated light-shielding layer is perforated is exposed to a photoreaction.
- a method of preparing a lithographic printing plate characterized by obtaining a lithographic printing plate by eluting a non-image portion of the photosensitive layer in an unperforated portion.
- light having the second wavelength is referred to as an active light source.
- the image area is an area where lipophilicity is to be applied and ink is to be applied.
- the photosensitive layer is a positive type
- the active light unexposed area is used.
- the photosensitive layer is a negative type
- an active light exposed area is used.
- the non-image area is an area where the ink tends to be reflected as hydrophilic, and when the photosensitive layer is a positive type, the active light exposure area is used. Refers to the exposed part.
- a lithographic printing plate precursor having at least a photosensitive layer and a perforated light-shielding layer on a support, the perforated light-shielding layer absorbs light having the first wavelength and the photosensitive wavelength of the photosensitive layer.
- a lithographic printing plate precursor comprising: a material that absorbs a region, that is, a material that absorbs a second wavelength and a water-soluble or water-soluble resin.
- a lithographic printing plate precursor having at least a photosensitive layer and a perforated light-shielding layer on a support, wherein the perforable light-shielding layer contains a near-infrared absorbing dye and a water-soluble resin.
- a lithographic printing plate precursor having at least a photosensitive layer and a perforated light-shielding layer on a support, wherein the photosensitive layer contains the 3 ⁇ 4-quinonediazide compound.
- the lithographic printing plate precursor having at least a photosensitive layer and a perforated light-shielding layer on a support, wherein the photosensitive layer contains a diazo compound as described in (4) or (5) above. Lithographic printing plate precursor.
- a lithographic printing plate precursor having at least a photosensitive layer and a perforated light-shielding layer on a support
- the near-infrared absorbing dye contained in the perforated light-shielding layer is water-soluble.
- a lithographic printing plate precursor having at least a photosensitive layer and a perforated light-shielding layer on a support
- the near-infrared absorbing dye contained in the perforated light-shielding layer is oil-soluble
- Lithographic printing plate precursor replenishment means lithographic printing plate precursor holding part, lithographic printing plate precursor holding means, high-intensity exposure to lithographic printing plate precursor selectively according to image information Activated light that photoreacts the photosensitive layer of the lithographic printing plate precursor / JP95 / 01374
- a lithographic printing plate precursor exposure apparatus comprising means for projecting light.
- the exposure of the light having the first wavelength has a power density of lOOOOOWZ cm 2 or more, the exposure speed is 0.4 mZ seconds or more, and the high intensity exposure is a laser beam. That the high-intensity exposure is irradiated from the side of the perforated light-shielding layer, and that the perforable light-shielding layer of the lithographic printing plate precursor contains a water-soluble infrared absorbing colorant can further exert the effects of the present invention. This is a preferred embodiment.
- FIG. 3 is a schematic diagram for explaining a method of preparing a lithographic printing plate according to the invention.
- FIG. 1 is a cross-sectional view illustrating an example of a lithographic printing plate precursor exposure apparatus of the present invention.
- FIG. 4 is a cross-sectional view illustrating another example of the exposure apparatus for a lithographic printing plate precursor according to the present invention.
- the function of the perforated light-shielding layer of the present invention is as follows: It is equivalent to a manuscript and can be called a so-called mask layer.
- the light having the first wavelength is high intensity laser light or the like, and is light that can perforate the perforated light-shielding layer of the present invention.
- the first wavelength is at least 500 nm. It is also important that the laser beam has a power density of lOOOOOWZcm 2 or more and an exposure speed of 0.4 mnosec or more.
- Drilling refers to the explosion of minute holes explosively due to local and instantaneous heating by laser light or the like and volume expansion including gasification. Some are likely to gasify and scatter. This is a phenomenon called Ablation.
- the light having the second wavelength is an active light source such as ultraviolet light, and is light having a photosensitive wavelength at which the photosensitive layer undergoes a photoreaction.
- the second wavelength should be less than 500 nm.
- the perforated light-shielding layer is perforated with light having the first wavelength, and the second wavelength passes through the perforated portion to cause a photoreaction of the photosensitive layer.
- the photoreaction of the photosensitive layer means that the solubility of the photosensitive layer in a developer changes.
- the exposed portions are insoluble in the developing solution by photopolymerization or photocrosslinking, but the unexposed portions remain soluble in the developing solution.
- the unperforated portion (the portion where the perforated light-shielding layer remains) substantially blocks the second wavelength so that the photosensitive layer does not react with light.
- Substantially blocking means that blocking is performed to such an extent that the difference in solubility between the image area and the non-image area in a developer can be caused by an image-like photoreaction.
- the second wavelength should be blocked by more than 97%.
- the perforable light-shielding layer preferably absorbs the first wavelength by 80% or more.
- the support for the lithographic printing plate precursor of the present invention is not particularly limited as long as it has good dimensional stability and can withstand a heat source such as a laser at the time of image recording.
- 7 Thin paper such as paper and glassine paper; heat-resistant plastic films such as polyethylene terephthalate, polyamide, polycarbonate, polysulfone, polyvinyl alcohol, cellophane, and polystyrene; aluminum (including aluminum alloy), zinc,
- An aluminum plate is preferable because a metal plate such as iron or copper can be used.
- Suitable aluminum plates are pure aluminum and an alloy plate containing aluminum as a main component and containing a trace amount of a different element. Further, aluminum may be a laminated or vapor-deposited plastic film. The content of the foreign element contained in the aluminum alloy is preferably 10% by weight or less.
- the thickness of the support is generally in the range of 100 to 600 ⁇ 111, more preferably 200 to 400 m.
- Aluminum plate in order to remove rolling oil to first adhere to a surface, a solvent, acid or, degreased force alkaline? Performed. Then continue graining treatment, it forces? Preferred surface treatment sealing treatment or the like, if anodic oxidation treatment and must have been subjected. Known methods can be applied to these processes.
- Examples of the graining method include a mechanical method and an electrolytic etching method 5 ′.
- Examples of the mechanical method include a ball polishing method, a brush polishing method, a polishing method using liquid honing, and a buff polishing method.
- the above-mentioned various methods can be used alone or in combination depending on the composition of the aluminum material and the like.
- Furnace etching is performed in a bath containing an inorganic acid such as hydrochloric acid or nitric acid. After the graining treatment, if necessary, perform a desmut treatment with an aqueous solution of alkali or acid to neutralize and wash with water.
- the anodic oxidation treatment is performed by using a solution containing one or more of sulfuric acid, chromic acid, oxalic acid, phosphoric acid, malonic acid and the like as an electrolytic solution, and performing electrolysis using an aluminum plate as an anode.
- Anodized film amount of the formed L ⁇ 50mgZdm 2 is suitable deli, rather preferably is 10 to 40 mg / dm 2, particularly preferably 25 ⁇ 40mgZdm 2.
- Anodized leather For example, the aluminum plate is immersed in a chromic acid phosphoric acid solution (85% phosphoric acid solution: 35 ml, prepared by dissolving 20 g of chromium (VI) oxide in 1 water) to dissolve the oxide film. It can be determined by measuring the change in weight before and after dissolving the film on the plate.
- the sealing treatment include a boiling water treatment, a steam treatment, a sodium silicate treatment, and a dichromate aqueous solution treatment.
- the aluminum plate support may be subjected to a subbing treatment with an aqueous solution of a water-soluble polymer compound or a metal salt such as fluorinated zirconic acid.
- a photosensitive layer comprising a known photosensitive composition is provided on a support such as an aluminum plate having a hydrophilic surface thus obtained.
- the photosensitive composition include a positive photosensitive composition containing a 0-quinonediazide compound as a photosensitive component, a photosensitive diazo compound, a photopolymerizable compound containing a monomer having an unsaturated double bond as a main component, and cinnamic acid.
- Negative photosensitive compositions containing a photocrosslinkable compound containing a dimethyl maleimide group as a photosensitive component are used.
- an ester compound 5 ′ of 0-quinonediazidesulfonic acid and a phenol or an aldehyde or ketone polycondensation resin is preferably used.
- the phenols include phenol, 0-cresol, m-cresol, P-cresol, 3,5-xylol, monovalent phenol such as olebacrol, thymol, catechol, and resorcinol.
- divalent phenols such as hydroquinone, and trivalent phenols such as pyrogallol and phloroglucin.
- the aldehyde include formaldehyde, benzaldehyde, acetoaldehyde, crotonaldehyde, furfural and the like.
- polycondensation resin examples include phenol / formaldehyde resin, P-cresol'formaldehyde resin, m-cresol'formaldehyde resin, m- and p-mixed cresol resins, resorcinol benzaldehyde resin, pyrogallol acetone resin, and the like.
- the 0-quinonediazide compounds phenols of - (rate of response to one -OH group) condensation ratio of o-quinonediazide sulfonic acid to OH groups force s preferably 15 to 80%, more preferably 20 to 60%.
- the following compounds described in JP-A-58-43451 can also be used. That is, for example, known 1,2-naphthoquinonediazide compounds such as 1,2-naphthoquinonediazidosulfonic acid ester and 1,2-naphthoquinonediazidosulfonic acid amide, and more specifically,
- 1,2-Naphthoquinonediazide-5-sulfonic acid cyclohexyl ester 1- (1,2-naphthoquinonediazide-5-sulfonyl) -3.5- described in (McGraw-Hill) (New York) Dimethylpyrazole, 1,2-naphthoquinonediazide-5-sulfonic acid-4 "-hydroxydiphenyl-4'-azo '-/?-Naphtholester, N, N-di- (1,2-naphthoquinonedi Azi-5-sulfonyl) -anilin, 2 '-(1,2-naphthoquinonediazide-5-sulfonyloxy) -1-hydroxy-anthraquinone, 1,2-naphthoquinonediazide-5-sulfone Acid-2,4-dihydroxy ⁇ -xybenzophenone ester, 1,2-naphthoquinonediazi
- the 0-naphthoquinonediazide compound used in the present invention includes, for example, 1,2-naphthoquinonediazide-4-cyclohexyl sulfonic acid ester, 1- (1,2-naphthoquinonediazide-4-sulfonyl)- 3,5-dimethylpyrazole, 1,2-naphthoquinone diazide -4-sulfonic acid-4 "-hydroxydiphenyl-4'-azo- / 3-naphthol ester, 2 '-(1,2-naphthyl ester Toquinonediazide-4-sulfonylooxy) -hydroxy-anthraquinone, 1,2-naphthoquinonediazide-4-sulfonic acid-2,4-dihydroxybenzophenone ester, 1,2-naphthoquinonediazide-4-sulfonic acid -2,3,4-trihydroxybenzophenone ester, 1,2-
- the above compounds may be used alone or in combination of two or more.
- the proportion of the 0-naphthoquinonediazide compound in the photosensitive composition is preferably from 5 to 60% by weight, particularly preferably from 10 to 50% by weight.
- 0 naphthoquinonediazide compound may constitute the light-sensitive layer in itself, but it forces 5 'desirable combination soluble resin as a binder to Al force Li water.
- a resin soluble in alkaline water various resins known in the art can be used.
- Certain power Particularly preferred is a novolak resin and a vinyl polymer having a structural unit having a phenolic hydroxyl group in its molecular structure.
- Examples of the novolak resin used in the present invention include resins obtained by condensing phenols and formaldehyde under an acid catalyst.
- Examples of the phenols include phenol, 0-cresol, m-cresol, P-cresol, 3,5-xylol, 2,4-xylerol, 2,5-xylerol, carnochlor, thymol, tecole, resorcinol, hydroquinone, pyrogallol, phloroglucin, etc. It is possible.
- the above-mentioned phenol compounds can be used alone or in combination of two or more to condense with formaldehyde to obtain a resin.
- preferred novolak resins are resins obtained by co-condensation polymerization of formaldehyde with at least one selected from phenol, m-cresol (or 0-cresol) and P-cresol.
- phenol-formaldehyde resin M-cresol-formaldehyde resin, 0- cresol.
- the above nopolak resins may be used alone or in combination of two or more.
- the molecular weight of the novolak resin is a weight average molecular weight M w of force .0 X 10 3 ⁇ 2.0 X 10 4 , a number average molecular weight M n Ca? 7.0 X 10 2 ⁇ 5 ⁇ 0 X 10 3 in a range Dearu this a force transducer preferred, more preferably, at Mw force.
- M n force 7.7 10 2 It is of value in the range of to 1.2 X 10 3.
- the measurement of the molecular weight of the novolak resin is performed by GPC (gel permeation chromatography).
- the calculation of the number average molecular weight Mn and the weight average molecular weight Mw is based on the method described in Morio Tsuge, Tatsuya Miyabayashi, and Masayuki Tanaka, "Journal of the Chemical Society of Japan", 800-805 (1972). (Connecting the center of the peak and the center of the valley).
- the vinyl polymer having a phenolic hydroxyl group-containing structural unit in the molecular structure preferably used in the present invention is a polymer formed by cleavage of a carbon-carbon double bond and polymerization, and Polymers containing at least one structural unit of the general formulas [1] to [6] are preferably used.
- R i and R 2 each represent a hydrogen atom, an alkyl group, or a carboxyl group, preferably a hydrogen atom.
- R 3 represents a hydrogen atom, a halogen atom or an alkyl group, preferably a hydrogen atom or an alkyl group such as a methyl group or an ethyl group.
- R 4 represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group, and is preferably a hydrogen atom.
- A represents an alkylene group which may have a substituent linking a nitrogen atom or an oxygen atom to an aromatic carbon atom
- m represents an integer of 0 to 10
- B may have a substituent It represents a phenylene group or a naphthylene group which may have a substituent.
- a copolymer containing at least one structural unit represented by the above general formula [2] is preferable.
- the vinyl polymer preferably has a copolymer structure.
- a copolymer at least one of the structural units represented by each of the general formulas (1) to (6) is preferable.
- the monomer unit that can be used in combination with the above include ethylene-unsaturated olefins such as ethylene, propylene, isobutylene, butadiene, and isoprene, for example, styrene, para-methylstyrene, P-methylstyrene, and P-methylstyrene.
- -Styrenes such as chlorostyrene
- acrylic acids such as acrylic acid and methacrylic acid
- unsaturated aliphatic dicarboxylic acids such as itaconic acid, maleic acid, and maleic anhydride
- methyl acrylate, ethyl acrylate, N-butyl acrylate, isobutyl acrylate, dodecyl acrylate, 2-chloroethyl acrylate Esters of ⁇ -methylene aliphatic monocarboxylic acids such as phenyl acrylate, methyl methacrylate, methyl methacrylate, methyl methacrylate, and ethyl ethacrylate
- nitriles such as acrylonitrile and methacrylonitrile Amides, such as acrylamide, for example, acrylanilide, ⁇ -chloroacrylanilide, m- nitroacylylanilide, m- methoxyacrylanilide
- (meth) acrylic acids, esters of aliphatic monocarbonic acid, and esters of at least one of the structural units represented by the general formulas [1] to [6] may be used in combination with at least one of them.
- Trills Overall excellent performance, favorable. More preferred are methacrylic acid, methyl methacrylate, acrylonitrile, ethyl acrylate and the like.
- These monomers may be bonded to the vinyl polymer in a block or random state.
- the content of structure 'forming units represented by the respective general formulas (1) to (6) in the vinyl polymer is 5 to 70 mol 0/6 forces Preferably, in particular 10 to 40 mol 0/0 force? preferable.
- the polymer may be used alone or in combination of two or more kinds in the photosensitive composition.
- Mw represents a weight average molecular weight
- Mn represents a number average molecular weight
- s, k, 1, 0, m, and n each represent a mole of a structural unit 0 / o.
- the proportion of the alkali-soluble resin in the photosensitive composition is preferably from 50 to 95% by weight, more preferably from 60 to 90% by weight.
- the photosensitive composition may further contain an organic acid or an acid anhydride, if necessary.
- Organic acids are preferred force s pKa value known various organic acid is used is Ru der 2 or more organic acids, more preferably a pKa value force .0 ⁇ 9.0, particularly preferably from 3.5 to 8.0 organic acids power? used.
- the above pKa value is a value at 25 ° C.
- organic acids examples include all compounds that can exhibit the above-mentioned pKa value, such as those described in Chemical Handbook, Basic Edition (Maruzen Co., Ltd., 1966, pp. 1054-1058). Can be.
- Such compounds include, for example, benzoic acid, adipic acid, azelaic acid, isophthalic acid, P-toluic acid, q-toluic acid, -ethylglutaric acid, m-oxybenzoic acid, P-oxybenzoic acid, 3,5 -Dimethylbenzoic acid, 3,4-dimethoxybenzoic acid, glyceric acid, glutaconic acid, glutaric acid, P-anisic acid, succinic acid, sebacic acid,, 3,, 3-getylglutaric acid, 1, 1-cyclobutanedicarboxylic acid, 1,3-cyclobutanedicarboxylic acid, 1J-cyclopentanedicarboxylic acid, 1,2-cyclopentanedicar
- -Tartaric acid spearic acid, terephthalic acid, pimelic acid, phthalic acid, fumaric acid,, 3-propylglutaric acid, propylmalonic acid, mandelic acid, mesotartaric acid,, 3-methylglutaric acid,, 3,, 3-methylpropyl Glutaric acid, methylmalonic acid, linoleic acid, 1,1-cyclohexanedicarboxylic acid, 1,2-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid Acid, cis-4-cyclohexene-1,2-dicarboxylic acid, erlic acid, pendecenoic acid, lauric acid, ⁇ -capronic acid, pelargonic acid, ⁇ -pendecanoic acid, and the like.
- organic acids having an enol structure such as Meldrum's acid and ascorbic acid
- the proportion of the organic acid in the photosensitive layer is suitably 0.05 to 10% by weight. It is preferably 0.1 to 5% by weight.
- Examples of the acid anhydride that can be used in the photosensitive composition include all known various acid anhydrides, preferably cyclic acid anhydrides, such as phthalic anhydride, tetrahydrophthalic anhydride, to Kisahidoro phthalic anhydride, 3,6 Endokishi - delta 4 - tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, glutaric acid anhydride, maleic phosphate, chlorinated maleic acid, arsenic - Fuweni Le maleic Acids, succinic anhydride, pyromellitic acid and the like. These acid anhydrides are contained in the photosensitive layer in an amount of 0.05 to 10% by weight, especially 0.1% by weight.
- the photosensitive composition preferably has a power 5 ′ capable of containing a compound that generates an acid or a free radical upon exposure, and such a compound is represented by the following general formulas (7) and (8). Trihaloalkyl compounds or diazonium chloride compounds shown respectively are preferably used.
- Xa represents a trihaloalkyl group having 1 to 3 carbon atoms
- W represents each atom of N, S, Se, P or C
- Z represents 0, N
- Y has a chromophore group and represents a group of non-metallic atoms necessary for cyclizing W and Z.
- the ring formed by the non-metallic atomic group may have Xa.
- the trihaloalkyl compound of the general formula [7] includes a compound represented by the following general formulas [9], [10] or [11].
- Xa is a trihaloalkyl group having 1 to 3 carbon atoms
- L is a hydrogen atom or a methyl group
- J is a substituted or unsubstituted aryl group or a heterocyclic group.
- n is 0, 1 or 2.
- Oxadiazole compounds having a benzofuran ring such as 2-trichloromethyl-5- (p-methoxystyryl) -1,3,4-oxadiazol compound described in JP-A-54-74728 or The following compounds described in JP-A-60-241049:
- Specific examples of the compound represented by the general formula [10] or [11] include 4- (2,4-dimethoxy-4-styryl) described in JP-A-53-36223. -6-trichloromethyl-2-pyrone compound, 2,4-bis- (trichloromethyl) -6-P-methoxystyryl-S-triazine compound described in JP-A-48-36281, 2,4-bis (trichloromethyl; 1 /)-6-p-dimethylaminostyryl-S-triazine compound and the like.
- the diazonium chloride a diazonium salt which generates a strong Lewis acid upon exposure is preferable, and a counter ion of an inorganic compound is recommended as a counter ion portion.
- the anion portion of the diazonium salt is formed by converting at least the phosphorous ion, arsenic fluoride ion, antimony fluoride ion, antimony chloride ion, tin chloride ion, bismuth chloride ion and zinc chloride ion.
- One type is an aromatic diazonium salt, and preferably a paradiazophenylamine salt.
- the amount of the compound that generates an acid or a free radical upon exposure to light is preferably 0.01 to 20% by weight, more preferably 0.1 to 20% by weight, and particularly preferably 0.2 to 20% by weight. ⁇ 10 weight 0 / o.
- the above-mentioned photosensitive composition preferably contains a compound which generates an acid or a free radical upon exposure to light, and a color-changing agent which changes the color tone by interacting with the photolysis product.
- a color-changing agent which changes the color tone by interacting with the photolysis product.
- discoloring agents those that develop color and those that fade or discolor.
- various colorants such as diphenylmethane, triphenylmethane-type thiazine, oxazine-type, xanthene-type, anthraquinone-type, iminonaphthoquinone-type, and azomethine-type are effectively used.
- arylamines can be mentioned as the color-changing agent for coloring.
- Arylamines suitable for this purpose include primary and secondary aromatic amines. 5/01374
- leuco dyes are also included, and examples of these are as follows.
- a dye capable of discoloring in the pH region 1 to 5 is preferable among the above-described color changing agents.
- Percentage of photosensitive composition of the color change agent, 0.0] that months? Preferably 10% by weight is used and more preferably at 0.02 to 5 wt%.
- the photosensitive composition preferably contains a condensation resin of a substituted phenol and an aldehyde represented by the following general formula [12] and Z or a 0-naphthoquinonediazidosulfonic acid ester compound of the resin.
- R 5 and R 6 each represent a hydrogen atom, an alkyl group or a halogen atom, and R 7 represents an alkyl group or a cycloalkyl group having 2 or more carbon atoms.
- R 5 and R 6 each include a hydrogen atom and an alkyl group (including those having 1 to 3 carbon atoms.
- R 7 is an alkyl group having 2 or more carbon atoms (in particular, a chlorine atom or a bromine atom is preferable among fluorine, chlorine, bromine and iodine atoms).
- the alkyl group has 15 or less carbon atoms, and an alkyl group having 3 to 8 carbon atoms is particularly useful.
- a cycloalkyl group including those having 3 to 15 carbon atoms.
- a cycloalkyl group of 8 is particularly useful.
- Examples of the above substituted phenols include isopropylphenol, tert-butylphenol, tert-amylphenol, hexylphenol, tert-octylphenol, cyclohexylphenol, 3-methyl-4-chloro-5 -tert-butylphenol, isopropyl pyrcresol, tert-butylcresol, tert-amylresole, hexylresole, tert-octylcresol, cyclohexylresole, etc., among which are particularly preferred. Or tert-octylphenol and tert-butylphenol.
- aldehydes examples include aliphatic and aromatic aldehydes such as formaldehyde, benzaldehyde, acetoaldehyde, acrolein, crotonaldehyde, and furfural, including those having 1 to 6 carbon atoms. I do. Of these, preferred are formaldehyde and benzaldehyde.
- the resin in which the substituted phenols and the aldehydes are condensed is synthesized by polycondensing the substituted phenol represented by the general formula [12] and the aldehydes in the presence of an acidic catalyst.
- the acidic catalyst used is hydrochloric acid, oxalic acid, sulfuric acid, phosphoric acid, etc.
- Inorganic acids and organic acids are used, and the mixing ratio of substituted phenols to aldehydes is 0.7 to 1.0 mole parts of aldehydes per 1 mole part of substituted phenols.
- Reaction solvents such as alcohols, acetone, water, tetrahydrofuran, etc.? Used. After the reaction at a predetermined temperature (15 to 120 ° C) and a predetermined time (3 to 48 hours), the reaction product is heated under reduced pressure, washed with water and dehydrated, or subjected to water precipitation to obtain a reaction product.
- the 0-naphthoquinone diazide sulfonic acid ester compound of the polymerized resin of the substituted phenols and aldehydes is prepared by dissolving the condensation resin in an appropriate solvent, for example, dioxane, etc., and adding 0-naphthoquinone diazide sulfonic acid thereto. Chloride is charged, and the mixture is esterified by dropping an alkali such as alkali carbonate under the stirring and heating to the equivalent point.
- condensation rate of de is 5% to 80% Ca, more preferably 20% to 70% More preferably, it is 30 to 60%.
- the condensation rate is calculated by determining the sulfur atom content of the sulfonyl group by elemental analysis:
- the amount of the resin obtained by condensing the substituted funols represented by the general formula (12) and the aldehydes and the 0-naphthoquinonediazidosulfonate nitrester compound of the resin in the photosensitive composition is 0.05 to 15% by weight. % is laid like, it is properly especially preferred 1 to 10 by weight 0/0, a weight average molecular weight Mw is preferably in the range from 5 ⁇ 0 ⁇ 10 2 ⁇ 5.0 ⁇ 10 3, more preferably 7.0 chi 10 in the range of 2 ⁇ 3.0 ⁇ 10 3.
- the measurement of the molecular weight is performed by the GPC method.
- the calculation of the number average molecular weight ⁇ ⁇ and the weight average molecular weight M w is performed in the same manner as described above, by Morio Tsuge, Tatsuya Takabayashi, and Masayuki Tanaka, “Japan According to the method described in "Chemical Society", pp. 800-805 (1972), the peaks in the oligomer region should be leveled (connecting the peaks and valley centers).
- the above-mentioned photosensitive composition may further contain a compound having at least one of the following structural units [D] and [E] in the molecular structure.
- n an integer of 2 to 5000.
- any compound may be used as long as the compound has one or both of the structural units (D) and (E).
- n force 5 ' is an integer in the range of 2 to 5000
- the boiling point force 5' is preferably a compound at 240 ° C or more, more preferably an integer in the range of n force 500, and a boiling point of 280
- Compounds that are at or above ° C, most preferred are compounds in the range of n-force to 100.
- Such compounds include, for example,
- the following are preferable.
- polyoxyethylene lauryl ether polyoxyethylene acetyl ether, polyoxyethylene stearyl ether, polyoxyethylene alcohol, polyoxyethylene higher alcohol ether, polyoxyethylene phenyl ether, polyoxyethylene nonylphenyl ether , Polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbate tetraoleate, Polyethylene glycol monolaurate, polyethylene glycol monostearate, polyethylene glycol Recohol monoester, polyethylene glycol distearate, polyoxyethylene nonylphenyl ether formaldehyde condensate, oxyethylene propylene block copolymer, polyethylene glycol, tetraethylene glycol, and the like.
- the proportion of the compound having at least one of the above structural units [D] and [E] in the photosensitive composition is preferably 0.1 to 20% by weight, more preferably 0.2 to 10% by weight, based on the whole composition. It is.
- the above compounds may be used alone or in combination of two or more as long as the content is within the above range.
- the photosensitive composition may further include a coloring material such as a dye and a pigment, a sensitizer, a plasticizer, a surfactant, and the like, if necessary.
- a coloring material such as a dye and a pigment, a sensitizer, a plasticizer, a surfactant, and the like, if necessary.
- a photosensitive layer can be provided to form a photosensitive lithographic printing plate.
- Solvents that can be used when dissolving each component of the photosensitive composition include cellosolves such as methyl cellosolube, methylacetosolve acetate, ethylsesolve, ethylsesolve acetate, dimethylformamide, and dimethyl. Sulfoxide, dioxane, acetone, cyclohexanone, trichloroethylene, methylethyl ketone, and the like. These solvents can be used alone or in combination of two or more.
- Examples of the negative photosensitive composition include a photosensitive composition containing a photosensitive diazo compound, a photosensitive composition containing a photopolymerizable compound, a photosensitive composition containing a photocrosslinkable compound, and the like.
- a photocurable photosensitive composition containing a photosensitive diazo compound will be described with reference to examples.
- an aromatic diazonium salt and an organic condensing agent having a reactive carbonyl group in particular, aldehydes such as formaldehyde and acetoaldehyde or acetoaldehydes are condensed in an acidic medium.
- Diazo resins are preferably used.
- a co-condensed diazo resin of an aromatic diazonium salt, an aromatic sulfonic acid (salt) compound or the like, and formaldehyde is also used.
- diazonium resin examples include a condensate of P-diazodiphenylamine and formaldehyde or acetoaldehyde, and a mixture of P-diazodiphenylamine and benzenesulfonic acid (salt) with formaldehyde or acetoaldehyde.
- a diazonium resin inorganic salt which is an organic solvent-soluble product of a cocondensate with hexafluorophosphate, tetrafluoroborate, or the condensate and sulfonic acid as described in U.S. Pat.No. 3,300,309.
- P-toluenesulfonic acid or a salt thereof phosphinic acids, for example, benzenephosphinic acid or a salt thereof, a hydroxyl group-containing compound, for example, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methan
- organic solvent-soluble diazonium resin organic acid salts such as toxicbenzophenone-5-sulfonic acid or a salt thereof are listed.
- diazonium resin examples include 4-diazodiphenylaminehexafluorophosphate-formaldehyde resin, 4-diazophenylamine'hexafluorophosphate-acetoaldehyde resin, and 4-diazodiphenylamine-hexafluorophosphate-formaldehyde resin.
- Diazo-4'-Methoxydiphenylamine'tetrafluoroborate-formaldehyde resin 4-Diazo-4'-Methoxydiphenylaminetetrafluo-borate-acetoaldehyde resin, benzenesulfonic acid-4 -Diazodiphenylamine ⁇ tetrafluoroborate-formaldehyde resin, benzenesulfonate-4-Diazodiphenylamine ⁇ tetrafluoroborate -acetoaldehyde resin, 4-diazodiphenylamine ⁇ 2-hydroxy- 4-methoxybenzophenone-5-sulfonate-formaldehyde resin and the like.
- Jiazoniumu resin is more its molecular weight to a variety altering the molar ratio and condensation conditions of the respective monomers force can be obtained as an arbitrary value?
- the molecular weight those forces of mosquitoes 00-10000? it is possible to use force favored properly is what force? suitable of 800 to 5,000.
- Photosensitive diazo resin is usually contained in the photosensitive layer! To 60% by weight, preferably 3 to 30% by weight.
- the photosensitive diazonium resin used in the present invention is preferably used in combination with a lipophilic polymer compound soluble or swellable in alkaline water as a binder.
- a lipophilic polymer compound include a copolymer containing the same monomer as that used in the positive photosensitive composition described above as a constituent unit.
- Examples of the monomers include acrylamides, methacrylamides, ⁇ ,, 3-unsaturated carboxylic acids, (substituted) alkyl acrylates, (substituted) alkyl methacrylates, vinyl ethers, vinyl esters, It is selected from compounds having an addition-polymerizable unsaturated bond such as vinyl ketones, styrene, and olefins.
- Vinyl esters such as vinyl acetate, vinyl acetate, vinyl butyrate, and vinyl benzoate
- Vinyl ketones such as methyl vinyl ketone, ethyl vinyl ketone, propyl vinyl ketone, phenyl vinyl ketone, etc.
- Olefins such as ethylene, propylene, isobutylene, butadiene and isoprene
- R II is a hydrogen atom, a halogen atom or an alkyl group
- R i 2 and R 13 each represents a hydrogen atom or an alkyl group
- R i4 is a carboxyl group, a carboxylic acid salt, a sulfo group or sulfone Represents an acid base
- p represents an integer of 1 to 3
- q represents an integer of 0 to 4
- Z represents 1 O— or 1 NH—.
- Any monomer can be used as long as it is a monomer copolymerizable with the monomer represented by the formula, but is not limited thereto.
- Other resins include polyvinyl butyral resin, polyurethane resin, polyamide resin, epoxy resin, novolak resin, polyvinyl formal resin, polyester resin, polycarbonate resin, and natural resin.c
- Particularly preferred addition-polymerizable unsaturated compounds include acrylic acid and methacrylic acid.
- the above-mentioned copolymer can be obtained by a usual method, but the molecular weight is preferably 10,000 to 300,000 (measured by gel bar chromatography), more preferably 20,000 to 250,000.
- the content of the lipophilic polymer compound in the photosensitive composition is preferably from 1 to 99% by weight, and more preferably from 5 to 95% by weight.
- dyes, pigments, coating improvers, plasticizers, and the like can be further added to the photosensitive composition as needed.
- the dyes include, for example, Victor Pureable (Hodogaya Chemical), Oil Bull # 603 (Orient Chemical), Patent Pureable (Sumitomo Sankoku Chemical), Crystal Violet, Priliangri , Ethyl violet, methyl green, ellis mouth ⁇ , basic fuchsin, malachite green, oil red, ⁇ cresol, ulpur, rhodamine ⁇ , o-lamin, 4-p-Jetyl amino phenyl imiminonaf toquinone Triphenyl methane, diphenyl methane, oxazine, xanthene, imino naphto quinone, azomethine or anthraquinone dyes represented by, for example, cyano- ⁇ -jetylaminophenic 2 ′ lacetoanilide. .
- the dye is usually contained in the photosensitive composition in an amount of about 0.5 to 10% by weight, preferably about 1 to 5% by weight.
- coating improvers include alkyl ethers (eg, ethyl cellulose, methyl cellulose), fluorinated surfactants, and nonionic surfactants (eg, Nick L64 (manufactured by Asahi Denka Co., Ltd.).
- plasticizers for imparting the flexibility and abrasion resistance of the coating film include butylphthalyl, polyethylene glycol, tributyl citrate, getyl phthalate, and phthalate.
- examples of the oil-sensitizing agent for improving the oil-sensitivity of the image area include a half-esterified product of a styrene-maleic anhydride copolymer with an alcohol described in JP-A-55-527.
- stabilizers include polyacrylic acid, tartaric acid, phosphoric acid, phosphorous acid, and organic acids (acrylic acid, Chestnut Le acid, Kuen acid, oxalic acid, benzenesulfonic acid, naphthalenesulfonic acid, 4-main butoxy-2-hydroxybenzoyl off We non - 5-sulfonic acid, etc.) and the like.
- the addition amount of these additives different forces 5 'by the use target object, relative to the general photosensitive layer is preferably 0.01 to 30 wt%.
- a photopolymerizable compound is a compound having at least one ethylenically unsaturated double bond capable of addition polymerization in one molecule. Specifically, diethylene glycol di (meth) acrylate, triethylene glycol L-Lu (meth) acrylate, trimethicone l-propane tri (meth) acrylate, pentaerythritol triacrylate, hydroquinone di (meth) acrylate, pyrogallol triacrylate, 2,2'-bis (4-acrylic acid (Ethoxyphenyl) propane and the like. These ethylenic compounds are contained in an amount of 5 to 70% by weight based on the total solid content of the photosensitive composition, and preferably 10 to 70% by weight.
- a vinyl copolymer having a structural unit having a phenolic hydroxyl group in the molecular structure described as the resin used in combination with the diazo compound is contained in an amount of 30 to 70% by weight, preferably 40 to 50% by weight, based on the total solid content of the photosensitive composition.
- a known photopolymerization initiator can be used in the photosensitive layer.
- benzoin, benzoin alkyl ether, benzophenone, anthraquinone, Michler's ketone, trihalomethyl-S-triazine-based compound, oxaziazol-based compound, complex system of biimidazole and Michler's ketone, thioxanthon and aromatic tertiary amine can be used.
- the amount of the photopolymerization initiator is 0.5 to 30% by weight, preferably 2 to 10% by weight, based on the total solid content of the photosensitive composition.
- the diazo resin is contained in an amount of 1 to 20% by weight, preferably 2 to 10% by weight, based on the total solid content of the photosensitive composition.
- the above-mentioned photosensitive composition is treated with a suitable solvent such as methylcellosolve, ethylcellosolve, methylcellosolve acetate, cellosolves such as ethylcellosolvecetate, methylethylketone, ethylethyl acetate, benzyl alcohol, Dissolve in diacetone alcohol, dimethylformamide, dimethylsulfoxide, dioxane, acetone, cyclohexanone, trichloroethylene, etc., alone or as a mixture of two or more to make a photosensitive solution. This is applied to the surface of the support and dried to obtain a photosensitive lithographic printing plate.
- a suitable solvent such as methylcellosolve, ethylcellosolve, methylcellosolve acetate, cellosolves such as ethylcellosolvecetate, methylethylketone, ethylethyl acetate
- the photosensitive lithographic printing plate material preferably has a solid content of 0.15 to 10 g Zm 2 .
- the perforated light-shielding layer of the lithographic printing plate precursor according to the present invention is provided with a first wave of laser light or the like. It must have a property of absorbing light having a long wavelength, a property of absorbing a second wavelength that is a photosensitive wavelength at which the photosensitive layer reacts with light, and a property of being eluted in a developer together with a non-image portion of the photosensitive layer.
- a soluble resin as a main component in the perforated shielding layer is a water-soluble resin, or an alkaline water.
- the water-soluble resin refers to a polymer compound having a solubility in water of lg ZlOO g or more.
- soluble in alkaline water means that the solubility of pH 7-14 in an alkaline aqueous solution is 1 g / 100 g or more.
- water-soluble resin examples include gelatin, polyvinyl alcohol, water-soluble polyvinyl formal, water-soluble polyvinyl acetal, water-soluble polyvinyl butyral, polyvinyl pyrrolidone, water-soluble polyester, water-soluble nylon, polyacrylic acid, water-soluble polyurethane, methyl cellulose, Doxypropylcellulose and the like. Further, a copolymer of a monomer component constituting these resins can also be used. Furthermore, in addition to ionomer resin, resins containing styrene, acrylic acid, methacrylic acid, phthalic anhydride, etc.
- Resins having an ionic bond such as those added with + , NH 4+, etc., can also be used as the water-soluble resin.
- Gelatin, casein and the like are also preferably used. Percentage for perforated shielding layers of these resin components' range mosquitoes preferred from 20 to 80 weight 0/0.
- the soluble lipophilic resin to Al force Li water various resins force known in the art? It is a usable, vinyl having a structural unit, especially having a novolak resin and Fueno Ichiru hydroxyl group in the molecular structure It is a strong polymer. Specific examples of these include those described earlier for the photosensitive layer.
- the perforated light-shielding layer also contains a near-infrared absorbing dye for absorbing high intensity laser exposure.
- Near-infrared absorbing dyes include laser-exposure waves
- the dyes described in Japanese Patent Application No. 4-334584, page 7, can be used.For example, see Functional Materials, June 1990, pages 64-68. From the described near-infrared absorbing dyes and functional dyes for optical recording described in Coloring Materials Vol. 61 (1988) pp.
- cyanine-based, squarylium-based, croconium-based, azurenium-based, and fuchiguchi-cyanine-based dyes Naphthalocyanine-based, anthraquinone-based, dithiol metal complex-based, indoor diphosphorus metal complex-based, intermolecular CT complex-based, transition metal chelate-based, and aluminum dimmonium-based dyes can be selected and used.
- water-soluble resin in the perforated shielding layer is preferably light absorbing material is also water soluble, tri force Ruposhiani emissions based pigment force in particular a water-soluble substituent such as a sulfo group? Preferred.
- the perforated light-shielding layer contains a water-soluble resin
- a water-soluble near-infrared absorbing dye as a light-to-heat conversion substance that performs light-to-heat conversion.
- the water-soluble near-infrared absorbing dye those containing an acid group such as a sulfo group, a carboxyl group, and a phosphono group are preferable, and those having a sulfo group are particularly preferable.
- the water-soluble near-infrared absorbing dye dyes represented by the following general formulas [13] to [24] are preferable.
- each ⁇ and Zeta 2 substituted or unsubstituted pyridine ring, substituted or is unsubstituted quinoline ring, a substituted or unsubstituted benzene ring or Represents a group of atoms necessary to form a substituted or unsubstituted naphthalene ring (when ⁇ , ⁇ 2 represents a pyridine ring or a quinoline ring, a - ⁇ + ⁇ ⁇ )-bond or —N (R 6 )- Les, it may also be included in the Z 2 or. ).
- Each Yl and Y 2 dialkyl-substituted carbon atom, a vinylene group, an oxygen atom, a sulfur atom, a selenium atom, or a substituted or unsubstituted alkyl group, a substituted or unsubstituted ⁇ Li - nitrogen atom to which Le group is bonded Represent.
- R 6 each represent a substituted or unsubstituted alkyl group
- R 2 , R4 and R5 each represent a hydrogen atom or a substituted or unsubstituted alkyl group
- R3 represents a hydrogen atom, A hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a nitrogen atom bonded to an alkyl or aryl group by 5 ′.
- At least one of the groups represented by ⁇ to ⁇ 4 and Rl to R6 is substituted by at least one of acid groups such as a sulfo group, a carboxyl group, and a phosphono group (preferably a sulfo group).
- ⁇ - represents an anion
- m represents 0 or 1
- n represents 1 or 2.
- n is 1 when the dye forms an inner salt.
- R 5 and 1 ⁇ 6 each represent a substituted or unsubstituted alkyl group.
- one also less of the groups represented by Ri ⁇ R 6 is a sulfo group, a carboxyl group, such as a phosphono group (preferably a sulfo group) substituted with at least one acid group.
- X— represents an anion.
- Ri, R2, R3 and R4 each represent a substituted or unsubstituted alkyl group, at least one of which is a sulfo group, a carboxyl group, a phosphono group or the like (preferably a sulfo group). It is substituted with at least one of the acid groups.
- R i and R 2 each represent a substituted or unsubstituted alkyl group, and at least one of them has a small number of acid groups such as a sulfo group, a carboxyl group, and a phosphono group (preferably a sulfo group).
- R 3 and R 4 each represent a hydrogen atom or an alkyl group, and the alkyl group may be substituted with an acid group such as a sulfo group, a carboxyl group, and a phosphono group (preferably a sulfo group).
- R i, R 2 and each represent a substituted or unsubstituted alkyl group, at least one of which is an acid such as a sulfo group, a carboxyl group or a phosphono group (preferably a sulfo group). It is substituted with at least one group.
- X- represents an anion.
- R i and R 2 each represent a sulfo group, a carboxyl group, a phosphono group, or an alkyl or aryl group substituted with one of them.
- R i represents a hydrogen atom, an amide group, an amino group, an alkyl group, or a sulfo group, a carboxyl group, a phosphono group, or an alkyl group substituted with one of them
- R 2 and R 3 represents an alkyl group or an alkyl group substituted with a sulfo group, a carboxyl group, or a phosphono group
- R 4 represents a hydrogen atom, a sulfo group, a carboxyl group, a phosphono group, or an alkyl substituted with one of them. Represents a group.
- M represents a metal atom (preferably Cu or Ni), and X- represents an anion.
- R i represents a hydrogen atom or an alkyl group substituted with a sulfo group, a carboxyl group or a phosphono group
- R 2 represents an alkyl group, an amide group, a dinitro group, a sulfo group Represents a carboxyl group or a phosphono group.
- R i and R 2 each represent a sulfo group, a carboxyl group, a phosphono group or an alkyl group substituted with one of them, and n represents 2 or 3.
- R 3 , R 4 and R 6 each represent an alkyl group which may be the same or different.
- R i and R 2 each represent a hydrogen atom, a sulfo group, a carboxy group, a phosphono group or an alkyl group substituted with one of them. However, both R i and R 2 are not hydrogen atoms.
- M represents a divalent or trivalent metal atom, and n represents an integer of 2 or 3.
- R 1 R 2R 3 and R4 each represent a hydrogen atom, a sulfo group, a carboxyl group, a phosphono group, or an alkyl group substituted with one of them.
- ⁇ 1 ⁇ 4 cannot be all hydrogen atoms.
- M represents a divalent metal atom.
- JP-A-62-123454, JP-A-3-146565 and the like can be used as the near-infrared absorbing dye.
- those not containing a sulfo group, a carboxyl group and a phosphono group as a substituent are preferably used.
- dyes soluble in organic solvents may be dispersed as colloid particles in a water-soluble resin together with a high-boiling solvent.
- Organic pigments insoluble in water and organic solvents can be dispersed in water-soluble resins by adding a suitable dispersant and surfactant. Known substances can be used as such dispersants and surfactants.
- Various methods for dispersing the oil-soluble dye in the water-soluble resin include a so-called alkaline aqueous solution dispersion method, solid dispersion method, latex dispersion method, oil-in-water emulsification dispersion method, and solid dispersion method. This can be appropriately selected according to the chemical structure of the oil-soluble dye.
- an oil-in-water type emulsion dispersion method, a solid dispersion method, and a latex dispersion method are particularly effective.
- These dispersing methods are well known in the art, and oil-in-water dropping is conventionally known as disclosed in JP-A-59-109055, in which a hydrophobic additive such as a coupler is dispersed.
- an oil-soluble dye is dissolved in a high boiling point solvent such as Nn-butyl acetoanilide, getyl lauramide, dibutyl phthalate, tricresyl phosphate, N-dodecyl vilolidone, and hydrophilicity such as gelatin is obtained.
- a high boiling point solvent such as Nn-butyl acetoanilide, getyl lauramide, dibutyl phthalate, tricresyl phosphate, N-dodecyl vilolidone, and hydrophilicity such as gelatin is obtained.
- a method of finely dispersing in colloid can be applied.
- a high-boiling organic solvent having a boiling point of about 175 ° C or higher is dissolved in combination with a low-boiling solvent, and finely dispersed using a surfactant in a hydrophilic binder such as an aqueous gelatin solution. What is necessary is just to add to the target hydrophilic colloid layer. More specifically, high-boiling solvents include organic acid amides, olebamates, esters, ketones, and urea derivatives, particularly dimethyl phthalate, getyl phthalate, and di-propyl.
- Phthalates such as phthalate, di-butyl phthalate, di-n-octyl phthalate, diisooctyl phthalate, diamyl phthalate, dinonyl phthalate, diisodecyl phthalate, tricresyl phosphate, triphenyl phosphate, and triphenyl -Phosphoric acid esters such as (2-ethylhexyl) phosphate and triisononyl phosphate; sebacic acid esters such as di-octyl sebacate; di- (2-ethylhexyl) sebacate; glycerol tripro Glycerides such as pionates and glycerol tributyrate Esters, other ⁇ adipic acid esters, glutaryl Ichiru acid ester, succinic acid ester, maleic acid ester ether, fumaric acid esters, and the like can be used Kuen ester.
- Oil-soluble dyes at the same time as these high-boiling solvents, if necessary, such as methyl acetate, ethyl acetate, propyl persulfate, butyl persulfate, butyl propionate, cyclohexanol, cyclohexane, tetrahydrofuran, and methyl.
- Solvents (These high-boiling solvents and low-boiling solvents may be used alone or in combination.)
- Anionic surfactants such as alkylbenzenesulfonic acid and alkylnaphthalenesulfonic acid and Z or sorbitan Nsesquio It is mixed with an aqueous solution containing a hydrophilic binder such as gelatin containing nonionic surfactants such as formate and sorbitan monolaurate, and emulsified and dispersed using a high-speed rotation mixer, colloid mill or ultrasonic dispersing device, etc. It may be added to the colloid.
- the solid dispersion method can be force? Using the method described in JP-A-3-296045.
- a precipitation method a method in which an oil-soluble dye is dissolved in an organic solvent and added to water to disperse it, or a method in which the oil-soluble dye is dissolved in a water-immiscible low-boiling organic solvent to form an oil-in-water dispersion And a method of volatilizing and removing the solvent.
- an oil-soluble pigment is made into a fine powder using high energy such as ultrasonic waves, and then added and dispersed in a hydrophilic colloid solution.
- the oil-soluble pigment is dispersed in the presence of a dispersing aid. Water, or a poor solvent, and dispersing the fine particles in a mill.
- examples of an apparatus for dispersing solid fine particles include a ball mill, a roll mill, and a sand mill, but a sand miller is preferable, and a commercially available sand mill can be widely used.
- the materials of the media used in the present invention include glass, alumina, and zirconium. 5 ', glass, zirconia and alumina are preferred, for example, stainless steel, nylon, etc. When glass is used, it is particularly preferable that the content of silicon dioxide is 60% by weight or more.
- the media is preferably spherical, and the force of the particle diameter is not particularly limited, usually 0.1 mm to 20 mm to 5 mm, more preferably 0.5 mm to 5 mm.
- As the glass media specifically, Bright Glass Beads manufactured by Bright Industry Co., Ltd. can be used.
- the latex dispersion method is described in JP-A-49-74538, JP-A-51-59943, JP-A-54-32552 and Research 'Disclosure, August 1976, ⁇ .14850, pp. 77-79. ing.
- perforated shielding layer of the lithographic printing plate precursor of the present invention it forces?
- the perforated light-shielding layer preferably also contains a substance that absorbs a photosensitive wavelength range in which the photosensitive layer reacts 5 ′. That is, it is a substance that absorbs the second wavelength.
- the material is appropriately selected according to the photosensitive layer.
- the photosensitive wavelength of diazo resin and naphthoquinone sensitizer is distributed in the range of 300 nm to 500 nm, and the material that absorbs this region is carbon black, cadmium yellow.
- 1.Inorganic pigments such as cadmium red, titanium yellow, graphite, zinc yellow, barium gromate, yellow iron oxide, red iron oxide, etc., organic pigments such as Hansaero I-G, Hansa-E-10G, etc., Tatrazine, etc.
- water-soluble dyes 2 - (2-arsenide de port carboxymethyl - 5 main benzotriazol Ichiru based ultraviolet absorbers such as Chirufuenon, 2,4 hydroxycarboxylic benzophenanthridine benzophenone-based ultraviolet absorbers such as non, colloids silver
- examples of such fine particles are those in which fine metal particles are dispersed in water in the form of a colloid as described above, and silver colloid having gelatin as a protective colloid is particularly preferable.
- a water-soluble resin is used for the perforated light-shielding layer, there are substances that absorb the photosensitive wavelength of the photosensitive layer. Preparation of the coating solution as long as they are water-soluble it can be easily force 5 ', like the near infrared absorbing dye, oil soluble substances,' insoluble substance in water and solvent may be in the form dispersed in the water-soluble resin .
- the substance that absorbs the photosensitive wavelength of the photosensitive layer may be used alone or in combination of two or more.
- the ratio of the substance absorbing the photosensitive wavelength of the photosensitive layer to the perforated light-shielding layer is preferably 5 to 60% by weight. It is preferable to adjust the transmission density of the perforated light-shielding layer at the center wavelength of the photosensitive wavelength to be 2 or more.
- additives for improving applicability include, for example, a surfactant, a conductive compound for an antistatic agent, a release agent for blocking prevention, a matting agent, and the like. Can be contained as needed.
- the thickness of the perforated light-shielding layer is preferably as thin as possible as long as the light-shielding function is not reduced, and specifically, is preferably in the range of 0.1 to 2.0, "m, and more preferably 0.1 to 1.0. However, if the intensity of the exposure is sufficiently high, it is possible to perforate even a thicker film, so that the thickness is not limited to this range.
- the perforated light-shielding layer may be formed of a plurality of layers whose functions are separated as necessary.
- the functions to be separated include, for example, light-shielding properties, light-absorbing properties, blocking resistance, and the like. These functions can be provided in different layers.
- the coating of the light-shielding layer can be performed in the same manner as in the photosensitive layer.
- a layer can be provided in addition to the light-sensitive layer and the perforated light-shielding layer, if necessary.
- an undercoat layer for improving adhesion and the like can be provided between the support and the photosensitive layer.
- a backing layer may be provided on the back surface of the support (the side opposite to the color material layer) for the purpose of imparting running stability, scratch resistance, and the like. The thickness of this backing layer is 0! Mosquitoes to in the range of ⁇ 1 m? Preferable.
- An intermediate layer may be provided between the photosensitive layer and the perforated light-shielding layer.
- the characteristics of the intermediate layer are as follows: (1) it is transparent to the photosensitive wavelength range of the photosensitive layer, (2) soluble or swellable in water or alkaline aqueous solution; (3) light-absorbing material for absorbing high-intensity light exposure or material that absorbs in the photosensitive wavelength range in the perforated light-shielding layer is produced or manufactured. not diffuse transition to the intermediate layer adjacent with time, this and force? like.
- the intermediate layer is mainly made of a lipophilic resin that is soluble in an aqueous solution of alkali metal.
- the binder contained in the resin is a water-soluble lipophilic resin, it is preferable that the intermediate layer is mainly composed of a water-soluble resin.
- water-soluble resin and the lipophilic resin soluble in the aqueous alkali solution include the same resins as those used in the above-described perforated light-shielding layer.
- the film thickness of the intermediate layer is 0.1 ⁇ 10 ⁇ 111 mosquitoes? Preferably, in particular 0.5 to 5) 11 mosquitoes? Preferred.
- the perforated light-shielding layer of the present invention may be divided into a light-to-heat conversion layer and a light-shielding layer.
- the perforated light-shielding layer of the present invention is divided into a light-to-heat conversion layer and a light-shielding layer will be described.
- the light-to-heat conversion layer is characterized by absorbing 80% or more of the light of the first wavelength of 500 nm or more.
- the light absorption wavelength range is preferably 700 to 1200 nm, and the absorptivity is preferably 90% or more. is there. That force?
- the film thickness is within L ⁇ m, more preferably 0.01 ⁇ 0.5 m.
- the absorption rate for the light of the second wavelength of the light-to-heat conversion layer is this a force f preferably less than 30%.
- the light-to-heat conversion layer comprises a water-bath resin and a dye (preferably an infrared absorbing dye) 5/01374
- the infrared absorbing dye is 700 ⁇ ! A substance with a molar extinction coefficient of 10,000 or more in a suitable medium for light (visible light or infrared light) with a wavelength of ⁇ 1200 nm. It is preferable that the infrared absorbing dye is contained in an amount of 10% by weight or more.
- the first wavelength of the perforation exposure is in the visible light region
- various pigments and dyes absorbing the exposure wavelength can be used.
- dyes described in Japanese Patent Application No. 4-334584, page 7, carbon black, and the like can be used.
- cyanine-based Arylium-based, croconium-based, azulhenium-based, phthalocyanine-based, naphtha-cyanine-based, anthraquinone-based, dithiol metal complex-based, indaniline metal complex-based, intermolecular CT complex-based, transition metal chelate-based, aluminum diimmonium-based dye
- Arylium-based, croconium-based, azulhenium-based, phthalocyanine-based, naphtha-cyanine-based, anthraquinone-based, dithiol metal complex-based, indaniline metal complex-based, intermolecular CT complex-based, transition metal chelate-based, aluminum diimmonium-based dye Can be selected and used.
- the dye also is preferably a water-soluble, Torikaruboshiani emission type dyes having a particularly water-soluble substituent such as a sulfo group.
- a sulfo group (- S0 3 H), Garubokishiru group (one C00H), those forces frame properly containing an acid group such as a phosphono group (one P_rei_3H 2), in particular a sulfo group
- water bathing property refers to the ability to dissolve at least 1% in water at 25 ° C.
- the light-shielding layer preferably has an absorptance of the second wavelength of less than 500 nm of 97% or more, more preferably 99% or more.
- ultraviolet absorbing dye 10 weight 0/0 or more for strength 'preferred As it is contained ultraviolet absorbing dye 10 weight 0/0 or more for strength 'preferred.
- the substance is appropriately selected according to the photosensitive layer.
- the photosensitive wavelength of the diazo resin and the naphthoquinone photosensitive agent is 300 ⁇ ! ⁇ 500nm
- Substances that absorb this region include inorganic pigments such as cadmium yellow, cadmium red, titanium yellow, graphite, zinc yellow, barium chromate, yellow iron oxide, and red iron oxide, and organic substances such as Hansa Yellow G and Hansaero 10G.
- Pigments water-soluble dyes such as tartrazine, benzotriazole-based UV absorbers such as 2- (2-hydroxy-5-methylphenone), benzophenone-based UV absorbers such as 2,4-hydroxybenzophenone, Examples include fine metal particles dispersed in water in the form of colloids, such as silver colloid.
- FIG. 1 illustrates a process of preparing a lithographic printing plate using the lithographic printing plate precursor of the present invention in a time-series schematic cross-sectional view.
- (a) shows the structure of a lithographic printing plate precursor
- 2 is an aluminum support
- 3 is a grain on the surface of the aluminum support 2
- 4 is a grain on the grain 3.
- the negative photosensitive layer 5 is a perforated light shielding layer provided on the photosensitive layer 4.
- the photosensitive layer is of a positive type
- the laser is selectively irradiated with the laser and the portion of the positive photosensitive layer from which the perforating light-shielding layer is removed is removed. Solubilized in developer.
- the photosensitive layer in the laser-irradiated portion elutes into the developer and also the perforated light-shielding layer in the laser-unirradiated portion elutes. As a result, the laser is not irradiated on the support.
- the image process of the present invention includes the steps of first performing high-intensity exposure from the perforated light-shielding layer side of the recording material to perforate the perforable light-shielding layer in an image-like manner, and then activating the perforated recording material. It consists of exposing the entire surface with a light source and developing the liquid.
- Examples of the laser light source for performing high-intensity exposure include a semiconductor laser, a He-Ne laser, an Ar laser, a YAG laser, and a carbon dioxide laser.
- Semiconductor lasers are preferred in terms of handling, but are not limited thereto.
- the exposure power density is preferably 100,000 WZcm 2 or more at the focal plane, more preferably 20000 WZcm 2 or more. If the power density is lower than this, the perforable light-shielding layer may not be effectively exploded / perforated.
- the exposure speed is preferably 0.4 mZ seconds or more, more preferably 1 mZ seconds or more. If the exposure speed is further reduced, layers other than the perforated light-shielding layer may be affected.
- Examples of preferable exposure conditions are as follows, but are not limited thereto.
- the holes formed by the high-intensity exposure may be halftone dots or continuous holes.
- the image is formed corresponding to the shape of the hole in the perforated light-shielding layer, and becomes a halftone dot or solid.
- the image density increases as the number of halftone dots increases (the image density increases with the number of holes). Since the lithographic printing plate precursor of the present invention has a perforated light-shielding layer formed on the photosensitive layer, it has excellent storage stability and does not require operation under a safety light.
- the active light source that irradiates the entire surface of the lithographic printing plate precursor in which the perforated light-shielding layer is imagewise perforated is preferably a light source that has effective spectral energy corresponding to the spectral sensitivity of the photosensitive layer.
- High-pressure, ultra-high-pressure mercury lamps, and meta-halide lamps are suitable for naphthoquinone photosensitizers.
- planographic making method of the present invention high resolution recording is possible because laser light can be used for perforating the perforated light-shielding layer.
- FIG. 2 is a cross-sectional view showing an example of an exposure apparatus for a lithographic printing plate precursor according to the present invention.
- Numeral 12 denotes a box in which an exposure device is provided
- numeral 13 denotes a means for replenishing a lithographic printing plate precursor P.
- the replenishing means 13 is arranged so that a plurality of lithographic printing plate precursors P placed thereon are sequentially fed leftward from the top one by a mechanism (not shown).
- Reference numeral 14 denotes a transport roller for sending the lithographic printing plate precursor P sent out by the supply means 13 to the holding means 15.
- the holding means 15 mainly includes a holding member 16, an original mounting means 17, a pressure roll 18, an original discharging means 19, and a pressure reducing means (not shown).
- the holding member 16 is mainly composed of a hollow cylinder that can be rotated at a predetermined rotation speed by a drive mechanism (not shown) with the rotation shaft 16b as a rotation axis, and the outer peripheral surface of the hollow cylinder is for a lithographic printing plate. It has a holding surface 16a for holding the original plate P, and the holding surface 16a has a plurality of equally-spaced pressure reducing holes 22 penetrating through the inside of the hollow cylinder at regular intervals. The pressure is reduced by the decompression means, so that the suction surface 22 It is configured so that a lithographic printing plate precursor P can be held on 16a.
- the original mounting means 17 holds the lithographic printing plate precursor P transported by the transport rollers 14 and transported to a predetermined position of the holding member 16 between the lithographic printing plate precursor P and the holding surface 16a, and rotates the rotary shaft 16b. With the leading end of the lithographic printing plate precursor P supported by an arm (not shown) and conveyed by the conveying rollers 14, the lithographic printing 1 3 ⁇ 43 ⁇ 4 original plate is rotated by rotating the holding member 16 and the arm in the arrow A direction. Is wound around the holding surface 163.
- the pressure roll 18 is rotatable about its rotation axis 18a, and can be urged by a control mechanism (not shown) with appropriate force against the holding surface 16a at a predetermined timing. I have.
- the leading end of the lithographic printing plate precursor P is sandwiched between the holding surface 16a and the lithographic plate mounting means 17, decompression is started, and the lithographic printing plate precursor P is sucked from the decompression holes 22 to rotate the holding member 16. Accordingly, the lithographic printing plate precursor P is wound and held on the holding surface 16a.
- the pressure roll 18 is urged against the holding surface 16a in the above process and presses the lithographic printing plate precursor P against the holding surface 16a, and the overall force of the lithographic printing plate precursor P is held on the holding surface 16a. When held, the pressure roll 18 is separated from the holding surface 16a.
- the original discharge means 19 is configured to send the planographic printing plate precursor P in a state where the pressure reduction of the holding member 16 is released to the discharge part 26 with its rear end held therebetween.
- Reference numeral 23 denotes an optical writing unit that selectively performs high-intensity exposure on the lithographic printing plate precursor P in accordance with image information. The optical writing unit is controlled by a known control mechanism (not shown) and performs exposure in accordance with the image information. Is configured to be performed.
- Reference numeral 25 denotes an entire surface irradiation means for irradiating the entire surface with actinic light for photoreacting the photosensitive layer of the lithographic printing plate precursor P.
- the lithographic printing plate precursor P for which the full-surface irradiation has been completed, is sent to the discharge unit 26 with the rear end sandwiched by the plate discharge means 19, and discharged to the outside of the box 12 by the transport means constituting the discharge unit 26. It has become so.
- the operation of the exposure apparatus shown in FIG. 2 will be described.
- the uppermost sheet P is sent to the holding means 15 by the conveying rollers 14.
- the tip of the lithographic printing plate precursor P comes into contact with the lithographic plate mounting means 17, the lithographic plate mounting means 17 is urged to the holding surface 16a, and the leading end of the lithographic printing plate precursor P is sandwiched by the lithographic printing plate mounting means 17.
- the pressure reducing means operates to reduce the pressure inside the holding member 16, and the holding member 16 rotates in the direction of arrow A.
- the pressure roll 18 is urged in the direction of the holding surface 16a to press the lithographic printing plate precursor P against the holding surface 16a, and the lithographic printing plate precursor P is wound around the holding surface 16a.
- the pressure roll 18 separates from the holding surface 16a, and then the holding member 16 holds the lithographic printing plate precursor P on the holding surface 16a.
- rotation starts at a high speed, exposure is performed according to image information under the control of a control mechanism (not shown) by the optical writing means 24, and when the image exposure is completed, the photosensitive layer of the lithographic printing plate precursor P undergoes a photoreaction.
- the entire surface of the lithographic printing plate precursor P is exposed to the activating light by means 25 for irradiating the entire surface of the lithographic printing plate precursor P. After the entire surface exposure is completed, the depressurization of the holding member 16 is released, and the rear end portion of the lithographic printing plate discharging means 19 is released.
- the lithographic printing plate precursor P is conveyed to the discharge portion 26 by the rotation of the plate discharge means 19 and the holding member 16 in the direction of arrow A, and is discharged to the outside of the box 12.
- the optical writing means and the means for irradiating the entire surface may be provided inside a cylindrical holding member.
- reference numeral 31 denotes a means for holding the lithographic printing plate precursor P
- the holding means 31 includes a holding member 32 and an original mounting means 34 for mounting the lithographic printing plate precursor P on the holding surface 32a of the holding member 32.
- a pressure roll 35 and a pressure reducing means (not shown).
- the holding member 32 is a support member for the lithographic printing plate precursor P whose semi-cylindrical inner surface forms a holding surface 32a for supporting the lithographic printing plate precursor P
- 33 is a decompression hole provided in the holding member 32.
- Reference numeral 34 denotes an original plate mounting means for locking the lithographic printing plate precursor P on the holding surface 32a, and a circumferential movement of an arm (not shown) having a center axis of a semi-cylindrical surface forming the holding surface 32a as a rotation axis.
- the lithographic printing plate precursor P is provided along the holding surface 32a by holding the leading end of the lithographic printing plate precursor P transported by the transport rollers 14 and rotating the arm clockwise in the figure. It is configured to rotate to its upper end.
- Reference numeral 35 denotes a pressure port, which is configured to be rotatable about a rotation axis 35a thereof.
- the rotation axis 35a is provided on an arm (not shown) having a center axis of a semi-cylindrical surface of the holding surface 32a as a rotation axis.
- the pressure port 35 is fixed so as to rotate along the holding surface 32a while applying pressure to the holding surface 32a by the rotation of the arm.
- Reference numeral 37 denotes an optical writing unit which is configured to perform sub-scanning in a direction perpendicular to the paper surface and main-scan the holding surface 32a in the vertical direction in the drawing to expose an image.
- the discharge section 40 is composed of transport means such as a transport port and a transport belt for discharging the lithographic printing plate precursor P sent by the original discharge means 39 to the outside of the box 12.
- transport means such as a transport port and a transport belt for discharging the lithographic printing plate precursor P sent by the original discharge means 39 to the outside of the box 12.
- the uppermost one of the plurality of lithographic printing plate precursors P placed on the replenishing means 13 is sent out leftward in the figure by the replenishing means 13, and a predetermined position on the holding means 31 side by the conveying roller 14.
- the original mounting means 34 bites the leading end and lifts up to the upper end of the holding surface 32a along the holding surface 32a.
- the pressure roll 35 vertically presses the lithographic printing plate precursor P against the holding surface 32a near the upper end of the holding surface 32a.
- the pressure roll 35 separates from the holding surface 32a, starts rotating the optical writing means 37 at high speed, and performs exposure according to image information created separately.
- the entire surface is irradiated with the active light by the entire surface irradiation means 38, and after the entire surface irradiation is completed, the depressurization is released, and the original discharging means 39 sandwiches the rear end of the lithographic printing plate precursor P. It is rotated clockwise in the figure and sent to the discharge section 40, transported and discharged from the box 12.
- the holding may be performed in a state where the pressure roll is not pressed against the holding surface.
- the pressure roll is preferably elastic body is a structure having a peripheral surface that is attached is in form-out winding, the rubber hardness lay preferable from the viewpoint of adhering strength? Homogeneously is at least 40 degrees, 1 kg / Pressing with a linear pressure of not less than cm is preferable for good adhesion.
- the optical writing means may be composed of a plurality of lasers.
- any means such as a roller and a belt can be applied as the conveying means.
- the time of retention of the original spur lithographic printing plate the vacuum holes'll be opened and closed in synchronism with the rotation of the holding member Unishitemoyore, 0
- both the developer and the image replenisher used for processing (development) of the photosensitive lithographic printing plate contain an alkali metal silicate.
- a development replenisher is appropriately replenished in accordance with the development processing amount of the photosensitive lithographic printing plate.
- the developing solution is of [Si0 2] / [M] force 5 '0.25 to 0.75, Si0 2 concentration mosquito .0 ⁇ 4.0 wt%, [Si0 2] / [M] force of the developer replenisher a .15 ⁇ 0.5, Si0 2 concentration is 1.0 to 3.0 weight 0/0.
- the above-mentioned developer and development replenisher can contain water-soluble or alkali-soluble organic and inorganic reducing agents.
- Examples of the organic reducing agent include phenol compounds such as hydroquinone, methanol, and methoxyquinone, and amine compounds such as phenylenediamine and phenylhydrazine.
- Examples of the inorganic reducing agent include: Sulfites such as sodium sulfite, potassium sulfite, ammonium sulfite, sodium bisulfite, potassium bisulfite, sodium phosphite, potassium phosphite, sodium hydrogen phosphite, potassium hydrogen phosphite, and phosphorous acid
- Examples thereof include phosphites such as sodium dihydrogen and potassium dihydrogen phosphite, hydrazine, sodium thiosulfate, and sodium dithionite.
- the developing solution may either be contained from 0.05 to 10 by weight 0/0 to the developer replenisher.
- the developing solution and the developing replenisher may contain an organic acid carboxylic acid.
- organic acids carboxylic acids, aliphatic carboxylic acids having 6 to 20 carbon atoms, and base benzene ring or direction carboxylic acid force carboxyl group to the naphthalene ring is substituted? Encompassed.
- an alkanoic acid having 6 to 20 carbon atoms is preferable, and specific examples thereof include caproic acid, enanthylic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, mystyric acid, and palmitic acid. Examples thereof include acids, stearic acid and the like, and particularly preferred are alkanoic acids having 6 to 12 carbon atoms.
- aliphatic carboxylic acids are carbon It may be a fatty acid having a double bond in the chain or a fatty acid having a branched carbon chain.
- the aliphatic carboxylic acid may be used as a sodium-potassium salt or an ammonium salt.
- aromatic carboxylic acids include benzoic acid, ⁇ -chlorobenzoic acid, ⁇ -chlorobenzoic acid, 0-hydroxybenzoic acid, ⁇ -hydroxybenzoic acid, p-tert-butylbenzoic acid , O-aminobenzoic acid, p-aminobenzoic acid, 2,4-dihydroxybenzoic acid, 2,5-dihydroxybenzoic acid, 2,6-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 3,5 —Dihydroxybenzoic acid, gallic acid, 1-hydroxy-1-naphthoic acid, 3-hydroxy-12-naphthoic acid, 2-hydroxy-11-naphthoic acid, 1-naphthoic acid, 2 —Naphthoic acid etc. 5 '.
- the aromatic carboxylic acid may be used as a sodium or potassium salt or an ammonium salt.
- the content of the aliphatic carboxylic acid and the aromatic carboxylic acid can be at least 0.1 to 30% by weight.
- the developer and the development replenisher may contain various anionic, nonionic and cationic surfactants and organic solvents.
- known additives can be added to the developer and the development replenisher.
- parts means “parts by weight”.
- a 0.24 mm thick aluminum plate is immersed in an aqueous sodium hydroxide solution to degrease CT / JP95 / 01374
- a positive photosensitive layer coating solution having the following composition was applied to the aluminum plate prepared as described above using a spin coater, and dried at 90 ° C. for 4 minutes to form a photosensitive layer (1).
- the thickness of this photosensitive layer (1) was 2.2 g / m 2 .
- Novolak resin 1 7.0 g
- OD 1 0-Naphthoquinonediazide compound (OD 1) 1.4 g Halomethyloxadiazole compound (rad 1) 0.05 g Victorious Pure BOH (trade name, dye, manufactured by Hodogaya Chemical Co., Ltd.) 0.07 g
- a coating liquid for a perforating light-shielding layer having the following composition was applied onto the above-mentioned photosensitive layer using a wire bar and dried to form a perforating light-shielding layer (1) having a thickness of 0.5 m, thereby obtaining a lithographic printing plate precursor.
- a laser beam of L T090MDZM F (Sharp, wavelength 830nm, maximum light output 100mW) is focused on the perforated light-shielding layer of the lithographic printing plate precursor to form a beam with a diameter of about 6m.
- the perforated light-shielding layer was perforated by irradiation at a scanning speed of 0.5 mZ seconds (optical efficiency was 60%).
- the dot diameter of the portion perforated in the form of dots was 6.5; / rn.
- the laser light was modulated via the RIP to expose the pattern at a halftone dot density of 75 lines from 0 to 100% in 10% steps.
- a lithographic printing plate with such a pattern was perforated over a 70 s distance from a 90 cm distance using a 2 kW metal halide lamp (Iwasaki Electric Idolfin 2000) as a light source.
- a 2 kW metal halide lamp Iwasaki Electric Idolfin 2000
- Example 2 On the same grained aluminum plate as in Example 1, a negative photosensitive layer coating solution having the following composition was applied in the same manner as in Example 1 to form a photosensitive layer (2), and the following composition having the following composition was formed on the photosensitive layer.
- the coating liquid for the perforated light-shielding layer was applied in the same manner as in Example 1, and a 0.7 m-thick perforated light-shielding layer was / JP95 / 01374
- Diazonium resin 1 l g High molecular compound 1 10 g Polyacrylic acid (Nijuly Chemical Co., Ltd., Zyurimer Ac-IOL) 0.6 g Victoria Pureable BOH (Hodogaya Chemical Co., Ltd.) 0.2 g Methyl mouth solvent 160 g Diazonium resin 1 was synthesized as follows.
- the resulting precipitate was filtered, washed with ethanol, and dissolved in 150 ml of pure water. To this solution was added a cold concentrated aqueous solution in which 8 g of ammonium hexafluorophosphate was dissolved. The resulting precipitate was filtered, washed with water, and dried at 30 ° C. for 24 hours to obtain a diazonium resin 1. The molecular weight of this product was measured by GPC to find that it had a weight average molecular weight of 2,400.
- the polymer compound 1 was synthesized as follows.
- N- (4-hydroxyphenyl) methacrylamide 10.3 g Acrylonitrile 15.9 g Ethyl acrylate 55 g Methacrylic acid 8.6 g and azobisisobutyronitrile (AIBN) 1.6 g in Acetone Z methanol 1: 1 (VOL / VOL) in a mixed solvent (110 ml) and reacted by heating at 60 ° C for 8 hours under a nitrogen stream. After completion of the reaction, the reaction solution was poured into water 51, and the formed precipitate (white) was filtered and dried to obtain about 75% of polymer compound 1. As a result of molecular weight measurement (GPC), the weight average molecular weight was 92,000.
- a coating solution for a perforating light-shielding layer having the following composition was applied on the photosensitive layer in the same manner as in Example 1 to obtain a lithographic printing plate precursor.
- the obtained lithographic printing plate precursor was subjected to image formation using a laser under the same conditions as in Example 1, exposed to the entire surface for 45 seconds, and developed.
- a developing solution a solution obtained by diluting SDN-21 (manufactured by Koni Riki Co., Ltd.) four times was used, and development was performed at 25 ° C. for 45 seconds. The developability was good, there was no print stain, and 150,000 printed matters were obtained.
- a negative photosensitive layer coating solution having the following composition was applied on the same grained aluminum plate as in Example 1 in the same manner as in Example 1 to form a photosensitive layer (3).
- Diazonium resin 1 0.48 g Polymer compound 26 g Trimethylolpropane triatalylate 6 g The following structural photopolymerization initiator 0.6 g
- polymer compound 2 was synthesized as follows.
- N- (4-hydroxyphenyl) methacrylamide 35 g Acrylonitrile 10 g Methyl methacrylate 34 g 6 g of methacrylic acid and 1.2 g of azobisisobutyronitrile are dissolved in 80 ml of a 1: 1 mixture of acetone and methanol. After purging with nitrogen, the mixture was heated at 60 ° C. for 8 hours. After completion of the reaction, the reaction solution was poured into water 51 with stirring, and the resulting white precipitate was filtered and dried to obtain 77 g of polymer compound 2. The molecular weight of the high molecular compound 2 was measured by GPC to find that the weight average molecular weight was 40,000.
- the coating solution of the coating liquid composition for perforated light-shielding layer 1 was applied in the same manner as in Example 1 to form a perforated light-shielding layer having a thickness of 0.7 m, thereby obtaining a lithographic printing original plate.
- An image was formed on the obtained lithographic printing plate precursor using a laser beam under the same conditions as in Example 1.After exposing the entire surface for 45 seconds, immersing it in the following developer for 40 seconds, and gently rubbing the surface with a degreased surface Unexposed areas were removed. 95/01374
- Example 1 The same experiment as in Example 1 was conducted except that the composition of the coating liquid for the light-blocking light-shielding layer was changed to the composition of the coating liquid for the light-permeable light-shielding layer shown in Table 1 (Sample Nos. 4-1 to 4-1 and 4-1 to 5). 416) The same experiment as in Example 2 was performed except that the composition of the coating solution for the porous light-shielding layer was changed to the composition of the coating solution for the porous light-shielding layer shown in Table 1 (Sample Nos. 4-2 and 4). I 4).
- Table 1 below shows the compositions and results of the compositions of the coating liquids for the perforated light-shielding layer shown in Table 1, 3, 4, Comparative 1, Comparative 2, and Comparative 3.
- Methylcellulose resin manufactured by Shin-Etsu Chemical Co., Ltd .: SM400
- TM400 1.8 parts No. Nzae Kichiichi 1.2 parts
- Triethanolammonoleic acid soap 0AU
- Near-infrared absorbing dye IR-3
- composition of coating solution for perforated light-shielding layer (Comparative 1)
- the photosensitive layer and the perforable light-shielding layer were applied in this order on the same grained aluminum aluminum plate as in Example 1.
- the photosensitive layer liquid was applied using the same liquid as that in Example 1 and using a wire bar so that the dry film thickness became 0.0; m .
- the perforable light-shielding layer liquids A and B of the following formulation are dispersed by the following method, and further mixed with the following perforable light-shielding layer liquid C to prepare a coating liquid for the perforable light-shielding layer.
- a thick force? 0.6 m was applied using a wire one bar primary, provided on the photosensitive layer.
- the perforable light-shielding layer solution A and the perforable light-shielding layer solution B were stirred with a stirrer at 50 ° C for 20 minutes while being sealed. (50rpm)
- the perforable light-shielding layer liquid A and the perforable light-shielding layer liquid B were added dropwise to the perforable light-shielding layer liquid A little by little on the perforated light-shielding layer liquid in a weight ratio of 2 to 5.
- the container containing the perforated light-shielding layer solution B is kept at a temperature of 4 to 8 ° C while cooling with ice water, and is further stirred with a stirrer (30 rpm) and an ultrasonic disperser. The mixture was added dropwise while dispersing by.
- the dispersion liquid thus mixed (mixture of the perforating light-shielding layer liquid A and the perforable light-shielding layer liquid B) and the perforable light-shielding layer liquid C are mixed at a weight ratio of 1: 1 and stirred to stir the perforated light-shielding liquid.
- the layer solution was prepared.
- the lithographic printing plate precursor prepared by the above method was subjected to infrared laser exposure, ultraviolet exposure, development, and ink filling in the same manner as in Example 1, and evaluated. As a result, 200,000 sheets of printing durability were obtained with good developability.
- a lithographic printing plate precursor was prepared in exactly the same manner as in Example 5, except that the near infrared absorbing dye IR G022 (manufactured by Nippon Kayaku) was used instead of the near infrared absorbing dye (IR820B) of Example 5. did. After exposing this lithographic printing plate precursor with a YAG laser (50 W), it was exposed to ultraviolet light, developed, and filled with ink. As a result, 200,000 sheets of printing durability were obtained with good developability.
- IR G022 manufactured by Nippon Kayaku
- the lithographic printing plate precursor prepared in Example 1 was exposed to laser light under different exposure conditions as shown in Table 2, and the degree of perforation was compared. Table 2 shows the results.
- a photosensitive layer was coated on a grained aluminum plate in the same manner as in Example 1.
- an intermediate layer coating solution having the following formulation was applied onto the upper optical layer using a wire bar and dried.
- An intermediate layer having a dry thickness of 2 m was provided.
- Novolak resin 1 20 parts Methyl ethyl ketone 80 parts
- a coating solution of a perforating light-shielding layer having the following composition was applied onto the above-mentioned photosensitive layer using a wire bar and dried to form a perforating light-shielding layer having a thickness of 0.8 m.
- a laser beam of a semiconductor laser LT090MDZMF (Sharp: 830 nm wavelength, maximum light output lOOmW) is focused on the perforated light-shielding layer of the above flat fiSi plate sample 1 to form a beam with a diameter of about 6 m and a scanning speed of lJmZ. Irradiation was performed in seconds to perforate the perforable light-shielding layer (optical efficiency was 60%). The dot diameter of the part drilled in dots was 6.5 m. Furthermore, the laser light was modulated via RIP, and the pattern was exposed at halftone dot density of 0 to 100% in 10% increments at 175 halftone dots. At this time, the feed in the sub-scanning line direction was set at 6.5 m pitch.
- a lithographic printing plate with such a pattern was punched from a 90cm distance for 70 seconds using a 2KW metal halide lamp (Iwasaki Electric: Idol Fin 2000) as a light source.
- a 2KW metal halide lamp Iwasaki Electric: Idol Fin 2000
- the exposed samples were developed for 30 seconds at 25 ° C for 30 seconds with a developing solution obtained by diluting an SDP-1 developer (manufactured by Koni Riki) 7 or 9 times.
- a photosensitive layer was coated on a grained aluminum plate in the same manner as in Example 1.
- a photoripening conversion layer coating solution having the following formulation was coated on the photosensitive layer using a wire bar and dried to form a photoripening conversion layer having a thickness of 0.3 m.
- a coating solution for a light-shielding layer having the following formulation was applied onto the color material layer using a wire bar and dried to form a light-shielding layer having a thickness, thereby obtaining a positive type lithographic printing plate precursor.
- Novolak Resin 1 0.8 parts Bengala TF100 (made by Toda Kogyo) 4.1 parts
- a laser beam of a semiconductor laser LT090MDZMF (Sharp: wavelength 830 nm, maximum light output lOOmW) is condensed on the coating surface of the recording material, and a diameter of about 6 m (intensity of 13.5% of the central portion is 13.5%). Irradiating with a scanning speed of 1.3 mZ seconds The layer was perforated. The light output on the exposed surface was 60 mWT '. The dot diameter of the dotted part was 6.5 ⁇ m. Further, the laser light was modulated via RIP to expose the pattern at a dot density of 175 lines from 0 to 100% in 10% increments. At this time, the feed in the sub-scanning line direction was set at a pitch of 6.5 mm.
- the lithographic printing plate precursor with such a pattern was illuminated for 70 seconds from a distance of 90 cm using a 2KW metal hayed lamp (Iwasaki Electric Idolfin 2000) as a light source.
- a 2KW metal hayed lamp Iwasaki Electric Idolfin 2000
- a lithographic printing plate can be directly produced from a digital image signal without using a film which is an intermediate material in a plate making process, and a lithographic printing plate is produced directly from a digital image signal.
- the formation of the perforated light-shielding layer is industrially easy and inexpensive, there is no need to remove the unexposed mask layer, there is no adverse effect on the photosensitive layer due to the formation of the perforated light-shielding layer, and perforation is performed during the development process.
- Technology 5 'that can sufficiently remove the conductive light-shielding layer is provided.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95924534A EP0720057A4 (en) | 1994-07-11 | 1995-07-11 | INITIAL ELEMENT FOR LITHOGRAPHIC PLATE AND PROCESS FOR PREPARING SAID PLATE |
CA002171472A CA2171472C (en) | 1994-07-11 | 1995-07-11 | Presensitized lithographic printing plate and method for preparing lithographic printing plate |
US08/592,325 US5858604A (en) | 1994-07-11 | 1995-07-11 | Presensitized lithographic printing plate and method for preparing lithographic printing plate |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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JP15873794 | 1994-07-11 | ||
JP6/158737 | 1994-07-11 | ||
JP6/194166 | 1994-08-18 | ||
JP19416694 | 1994-08-18 | ||
JP65795 | 1995-01-06 | ||
JP7/657 | 1995-01-06 |
Publications (1)
Publication Number | Publication Date |
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WO1996002021A1 true WO1996002021A1 (fr) | 1996-01-25 |
Family
ID=27274547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1995/001374 WO1996002021A1 (fr) | 1994-07-11 | 1995-07-11 | Element initial pour plaque lithographique et procede de preparation de ladite plaque |
Country Status (4)
Country | Link |
---|---|
US (1) | US5858604A (ja) |
EP (1) | EP0720057A4 (ja) |
CA (1) | CA2171472C (ja) |
WO (1) | WO1996002021A1 (ja) |
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- 1995-07-11 EP EP95924534A patent/EP0720057A4/en not_active Withdrawn
- 1995-07-11 CA CA002171472A patent/CA2171472C/en not_active Expired - Fee Related
- 1995-07-11 US US08/592,325 patent/US5858604A/en not_active Expired - Fee Related
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0803770A1 (en) * | 1996-04-23 | 1997-10-29 | Agfa-Gevaert N.V. | An imaging element and a method for producing a lithographic plate therewith |
EP0803772A2 (en) * | 1996-04-23 | 1997-10-29 | Agfa-Gevaert N.V. | An imaging element and a method for producing a lithographic plate therewith |
EP0803771A1 (en) * | 1996-04-23 | 1997-10-29 | Agfa-Gevaert N.V. | A method for making a lithopgrapic printing plate wherein an imaging element is used that comprises a thermosensitive mask |
EP0803769A1 (en) * | 1996-04-23 | 1997-10-29 | Agfa-Gevaert N.V. | Imaging element for making a lithographic printing plate wherein that imaging element comprises a thermosensitive mask |
EP0803772A3 (en) * | 1996-04-23 | 1997-11-05 | Agfa-Gevaert N.V. | An imaging element and a method for producing a lithographic plate therewith |
KR100523811B1 (ko) * | 1999-12-28 | 2005-10-25 | 주식회사 효성 | 고강도, 고탄성 폴리우레탄 탄성섬유의 제조방법 |
Also Published As
Publication number | Publication date |
---|---|
CA2171472A1 (en) | 1996-01-25 |
US5858604A (en) | 1999-01-12 |
CA2171472C (en) | 2002-02-26 |
EP0720057A4 (en) | 1997-01-22 |
EP0720057A1 (en) | 1996-07-03 |
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