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WO2002076738A1 - Procede pour produire des plaques d'impression en relief par gravure au laser - Google Patents

Procede pour produire des plaques d'impression en relief par gravure au laser Download PDF

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Publication number
WO2002076738A1
WO2002076738A1 PCT/EP2002/002953 EP0202953W WO02076738A1 WO 2002076738 A1 WO2002076738 A1 WO 2002076738A1 EP 0202953 W EP0202953 W EP 0202953W WO 02076738 A1 WO02076738 A1 WO 02076738A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
relief
layer
filler
engravable
Prior art date
Application number
PCT/EP2002/002953
Other languages
German (de)
English (en)
Inventor
Margit Hiller
Alfred Leinenbach
Uwe Stebani
Thomas Telser
Original Assignee
Basf Drucksysteme Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Basf Drucksysteme Gmbh filed Critical Basf Drucksysteme Gmbh
Publication of WO2002076738A1 publication Critical patent/WO2002076738A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam

Definitions

  • the present invention relates to a method for producing relief printing plates by applying a laser-engravable layer, at least comprising a polymeric binder, polymerizable compounds, an initiator and a filler, on a dimensionally stable support, cross-linking of the layer over the entire surface and engraving of a printing relief by means of a laser in the layer, the filler being an inorganic, non-oxidizing and thermally decomposable compound selected from the group of alkali, alkaline earth or ammonium compounds, with the exception of CaC0 3 as filler.
  • the present invention further relates to a laser-engravable relief printing element which comprises a cross-linked, laser-engravable relief layer which contains at least one of said fillers.
  • Direct laser engraving has several advantages over the conventional production of relief printing plates. A number of time-consuming process steps, such as creating a photographic negative or developing and drying the printing form, can be omitted. Furthermore, the flank shape of the individual relief elements can be designed individually using the laser engraving technique. While the flanks of a relief point run continuously apart from the surface to the relief base in the case of photopolymeric relief printing plates, laser engraving can also be used to engrave a flank that slopes vertically or almost vertically in the upper area and only widens in the lower area. Thus, with increasing wear and tear or crushing of the plate during the printing process, there is no or at most a slight increase in tone value. Further details on the technique of laser engraving are shown, for example, in "Tech- nik des Fiexodrucks ", p. 173 ff., 4th edition, 1999, Coating Verlag, St. Gallen, Switzerland.
  • the efficiency (quantity of material removed per irradiated energy and time unit) with which the relief printing element can be engraved is essential for the economy of the process of producing relief printing plates via laser engraving.
  • the absorption of the relief printing element ie the extent to which the laser radiation is absorbed by the relief printing element, is decisive for the efficiency of the process. It is also essential that the absorbed energy actually leads to the ablation of the relief layer and does not dissipate in the laser-ablatable layer. Thermal dissipation not only reduces the efficiency of the ablation process but can also have undesirable effects, such as melting the layer. This leads to melting edges around engraved negative elements, which deteriorate the printed image.
  • EP-A 640 043 and EP-A 640 044 propose, for example, carbon black, graphite, chromium oxides, cobalt chromium aluminate or other dark inorganic pigments as IR absorbers.
  • EP-A 710 573 discloses a photosensitive printing plate material which comprises a polyurethane elastomer, nitrocellulose and an absorber for laser radiation.
  • the addition of strong oxidizing agents is disadvantageous because the polymer material of the printing plate is not only attacked by the oxidizing agent under the influence of laser radiation, but also a slow oxidation of the polymeric material can occur during storage of the material. This at least changes the properties of the printing form, but serious damage to the material can also occur.
  • the object of the invention was to provide a method for producing relief printing plates by means of laser engraving, which involves the use of oxidizing agents or self-reactive ones
  • Another task was to provide improved recording elements for the production of printing forms by means of laser engraving.
  • the object is achieved by a process for the production of relief printing forms by applying a laser-engravable layer, at least comprising binder, polymerizable compounds, initiator and a filler, on a dimensionally stable support, full-area crosslinking of the layer and engraving of a printing relief found in the layer, whereby the filler is an inorganic, non-oxidizing and thermally decomposable compound that is selected from the group of alkali, alkaline earth or ammonium compounds, with the exception of CaC0 3 as filler.
  • a laser-engravable relief printing element has been found which comprises a cross-linked, laser-engravable relief layer which additionally comprises at least one of the said fillers.
  • a crosslinkable relief layer is applied to a dimensionally stable support, the relief layer at least one polymeric binder, at least one polymerizable compound, at least one polymer risk initiator or an initiator system and at least one finely divided filler.
  • the method according to the invention is suitable for the production of relief printing forms, such as, for example, high-pressure, flexographic or gravure printing forms.
  • the suitability for producing certain types of relief printing plates is determined in a known manner by parameters such as hardness and elasticity of the relief layer and by surface properties, such as, for example, a certain abrasiveness.
  • the relief printing plates can be relief printing plates as well as round sleeves, so-called sleeves.
  • laser-engravable is to be understood to mean that the relief layer has the property of absorbing laser radiation, in particular the radiation from an IR laser, so that it is removed or at least removed at those locations where it is exposed to a laser beam of sufficient intensity is replaced.
  • the layer is preferably vaporized or thermally decomposed without melting beforehand, so that its decomposition products in the form of hot gases, vapors, smoke or small particles are removed from the layer.
  • Suitable dimensionally stable supports are, in particular, films made from metals such as steel, aluminum, copper or nickel or from plastics such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate, polyamide or polycarbonate.
  • Dimensionally stable supports are primarily dimensionally stable polyester films, in particular PET or PEN films, or thin, flexible supports made of aluminum or stainless steel.
  • Conical or cylindrical tubes made of the said materials, so-called sleeves, can also be used as supports. Glass fibers or composite materials made from glass fibers and suitable polymeric materials are also suitable for sleeves.
  • the dimensionally stable support can be coated with a suitable adhesive layer.
  • the laser-engravable layer comprises at least one polymeric binder.
  • the binders are those binders which are usually used in relief printing plates, in particular in photopolymeric relief printing plates. Depending on the desired properties of the printing form, elastomeric or non-elastomeric polymeric binders can be used. As a binding both water-soluble or organically soluble polymers can be used.
  • Suitable binders are, for example, hydroxyalkyl cellulose, partially saponified or fully saponified polyvinyl alcohols, polyvinyl alcohol graft copolymers such as, for example, polyvinyl alcohol-polyethylene oxide graft copolymers, copolymers of vinyl alcohol units and comonomers such as, for example, acrylic acid units, vinyl ether units, vinyl pyrrolidone or vinylamine.
  • thermoplastic elastomeric block copolymers such as styrene-butadiene-styrene (SBS) or styrene-isoprene-styrene (SIS) or styrene (ethylene / butylene) styrene polymers (SEBS).
  • SBS styrene-butadiene-styrene
  • SIS styrene-isoprene-styrene
  • SEBS styrene (ethylene / butylene) styrene polymers
  • ABC block copolymers for example polymers composed of styrene, alkylene and diene blocks, can also be used.
  • binders can also be used in which crosslinkable groups are introduced into the polymeric molecule by grafting reactions.
  • Mixtures of different binders can also be used, provided that the properties of the laser-engravable relief layer are not adversely affected by the mixture.
  • the type and the amount of the binder used are chosen by the person skilled in the art depending on the desired properties of the laser-engravable relief layer. As a rule, an amount of 45 to 95% by weight of the binder with respect to the amount of all components of the laser-engravable layer has proven itself.
  • the laser-engravable layer is cross-linked.
  • Crosslinking can be achieved both photochemically or thermally or by a combination of both methods.
  • polymerizable monomeric or oligomeric compounds are generally added to the laser-engravable recording layer.
  • the polymerizable compounds have crosslinkable groups.
  • Crosslinkable groups can also be constituents of the binder itself, which can be crosslinkable groups in the main chain, terminal groups and / or lateral groups.
  • the mo Nomers should be compatible with the binders and have at least one polymerizable, olefinically unsaturated group. Depending on the binder chosen and the desired properties, the person skilled in the art makes a suitable selection from the monomers which are possible in principle.
  • Esters or amides of acrylic acid or methacrylic acid with mono- or polyfunctional alcohols, amines, amino alcohols or hydroxy ethers and esters, styrene or substituted styrene, esters of fumaric or maleic acid or allyl compounds have proven to be particularly advantageous.
  • suitable monomers include butyl acrylate, 2-ethylhexyl acrylate, lauryl acrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, 1,6-hexanediol dimethacrylate, 1,9-nonanediol diacrylate or trimethylolpropane triacrylate.
  • oligomers with olefinic groups can also be used, such as oligomeric polyethylene glycol di (meth) acrylate. Mixtures of different monomers or oligomers can of course also be used, provided that these are compatible with one another.
  • the total amount of monomers used is determined by the person skilled in the art depending on the type of binder and the desired properties of the recording layer. As a rule, however, 45% by weight with respect to the amount of all components of the laser-engravable layer should not be exceeded.
  • photoinitiators such as benzoin or benzoin derivatives, benzoin ethers, benzene derivatives, such as e.g. Benzyl ketals or acyl arylphosphine oxides are used, but the list is not intended to be restricted to these.
  • thermal crosslinking analogous to photochemical crosslinking, thermal polymerization initiators can be used instead of photoinitiators, for example commercially available thermal initiators for radical polymerization, such as suitable peroxides, hydroperoxides or azo compounds.
  • thermal crosslinking however, thermosetting resins, such as epoxy resins, can also be added to the layer, or binders can be used which themselves have polymerizable groups which can react with one another.
  • the relief layer comprises at least one inorganic, non-oxidizing and thermally decomposable compound as the filler, which is selected from the group of alkali, alkaline earth or A mmoniumeducatingen, whereby CaC0 3 is excluded as a filler.
  • the relief layer can also contain two or more such fillers. Optionally, chemically different fillers can also be used.
  • the particle size of suitable fillers is generally less than 5 ⁇ m, preferably less than 2 ⁇ m and particularly preferably less than 1 ⁇ m.
  • this information relates to the diameter, in the case of irregularly shaped particles, such as, for example, in the case of needle-shaped particles, to the longest axis.
  • “Thermally decomposable” in the sense of this invention is to be understood as meaning such inorganic fillers which, under the influence of laser radiation or the heat, gases such as, for example, water vapor, ammonia or CO, which are locally developed in the layer by the laser radiation.
  • Suitable fillers generally have a decomposition temperature between 50 and 1000 ° C., without the invention being restricted to this.
  • the decomposition temperature is preferably 80 to 800 ° C. and very particularly preferably 150 to 500 ° C.
  • non-oxidizing is to be understood as meaning those inorganic substances which do not oxidize the organic components of the laser-engravable layer, that is to say essentially binders and compounds added for crosslinking or their reaction products.
  • the term “non-oxidizing” does not of course exclude slight oxidation within the usual measurement inaccuracies. It goes without saying for the person skilled in the art that oxidizing or reducing properties of substances always depend on the respective reaction partner. Of course, for the purposes of this invention, “non-oxidizing” substances can have an oxidizing effect on very strong reducing agents.
  • Suitable inorganic, non-oxidizing and thermally decomposable compounds as fillers which are selected from the group of alkali, alkaline earth or ammonium compounds, are in particular carbonates, hydrogen carbonates or hydroxides. Suitable fillers can also contain water of crystallization. The fillers can also be coated with suitable dispersing aids, adhesion promoters or water repellents, provided the relief properties are not adversely affected.
  • suitable fillers include MgC0 3 , NaC0 3 , K 2 C0 3 , (NH 4 ) 2 C0 3 , NaHC0 3 , KHCO3, NH4HCO3, Mg (0H) 2 , Sr (0H) 2 , Ba (0H ) 2 or Na 2 S 2 0 3 , the fillers also being able to additionally contain water of crystallization.
  • Hydrogen carbonates and alkaline earth metal hydroxides are particularly suitable.
  • particularly suitable compounds are Ba (0H) 2 , Sr (0H), and NaHC0 3 is very particularly suitable.
  • the amount of the inorganic, thermally decomposable filler is determined by the person skilled in the art depending on the desired engraving properties. As a rule, at least 1% by weight of the filler is used in relation to the sum of all components of the relief layer in order to achieve the effect according to the invention, although in exceptional cases smaller amounts can also be effective.
  • the person skilled in the art will take into account that the fillers added not only influence the efficiency of the engraving of the relief layer by laser, but also other properties of the relief printing elements, such as, for example, their hardness, elasticity, thermal conductivity or color acceptance. As a rule, it is therefore advisable not to use more than 20% by weight of the filler with respect to the buzzer of all components of the laser-engravable layer.
  • the amount is preferably 2 to 15% by weight and particularly preferably 5 to 12% by weight.
  • the laser-engravable layer can optionally comprise an absorber for laser radiation to increase the absorbance.
  • Mixtures of different absorbers for laser radiation can also be used.
  • Suitable absorbers for laser radiation have a high absorption in the range of the laser wavelength.
  • absorbers are suitable which have a high absorption in the near infrared, as well as in the longer-wave VIS range of the electromagnetic spectrum.
  • Such absorbers are particularly suitable for absorbing the radiation from high-performance Nd-YAG lasers (1064 nm) and from IR diode lasers or solid-state lasers, which typically have wavelengths between 700 and 900 nm and between 1200 and 1600 nm.
  • Suitable absorbers for laser radiation in the infrared spectral range are strongly absorbing dyes such as phthalocyanines, naphthalocyanines, cyanines, chi none, metal complex dyes such as dithiolenes or photochromic dyes.
  • Other suitable absorbers are inorganic pigments, in particular intensely colored inorganic pigments such as chromium oxides, iron oxides, carbon black or metallic particles.
  • Finely divided soot types with a particle size between 10 and 50 nm are particularly suitable as absorbers for laser radiation.
  • the amount of IR absorber is determined by the person skilled in the art depending on the desired properties of the laser-engravable layer. The person skilled in the art will also note here that the mechanical and printing properties can be influenced by the IR absorber. As a rule, therefore, more than 20% by weight of absorbers are unsuitable for laser radiation with respect to the sum of all components of the laser-engravable elastomer layer.
  • the amount of the absorber for laser radiation is preferably 0.5 to 15% by weight and particularly preferably 0.5 to 10% by weight.
  • the total of the amounts of IR absorber and inorganic, thermally decomposable filler together should not exceed a total of 30% by weight, preferably 20% by weight, with respect to the amount of all components of the laser-engravable layer.
  • the laser-engravable layer can furthermore also contain additives and auxiliaries such as, for example, dyes, dispersing aids, antistatic agents or plasticizers.
  • additives and auxiliaries such as, for example, dyes, dispersing aids, antistatic agents or plasticizers.
  • the amount of such additives should not exceed 20% by weight, preferably 10% by weight, with respect to the amount of all components of the crosslinkable, laser-engravable layer of the recording element, without this, in principle, being intended to exclude higher amounts.
  • the laser-engravable layer can be produced, for example, by dissolving or dispersing all components in a suitable solvent, pouring them onto a support and evaporating the solvent. It is important that the thermally decomposable, non-oxidizing, inorganic filler is distributed very evenly in the laser-engravable layer. If the filler is soluble in the solvent, then even distribution is generally not a problem. This is often the case, for example, when using water or aqueous solvent mixtures and binders soluble therein. In the event that the filler is not soluble in the solvent, it is advisable to use a very fine-particle solid. For example, suitable precipitated salts can be used. The filler can also be ground before use.
  • multilayer elements several layers can be cast onto one another in a manner known in principle.
  • the individual layers can be cast onto temporary supports, for example, and the layers can then be connected to one another by lamination.
  • the laser-engravable layers can also be produced in a known manner by extrusion and / or calendering. It goes without saying that the temperature of the extrusion must be selected so that the thermally decomposable fillers do not decompose at the extrusion temperature.
  • the extrusion technology can be used particularly advantageously for photo-crosslinkable systems. In principle, extrusion technology can also be used for thermally cross-linkable systems, provided that only those components are used that do not cross-link at the process temperature.
  • the photochemical crosslinking will be carried out in a manner known per se by irradiation with actinic radiation such as UN or UN / VIS radiation, soft X-rays or electron beams.
  • the thermal crosslinking is usually carried out with heating. It goes without saying for the person skilled in the art that the temperature at which crosslinking is carried out is below the decomposition temperature of the filler.
  • the person skilled in the art makes the choice among the crosslinking methods depending on the desired properties of the relief printing element.
  • the laser-engravable layer is largely opaque, it is regularly advisable to thermally crosslink.
  • it can also be photochemically crosslinked by applying thin layers several times in succession and crosslinking until the desired total layer thickness is reached.
  • Thermal and photochemical crosslinking can also be combined with one another.
  • the relief printing element can also have several laser-engravable layers one above the other.
  • the laser-engravable, cross-linkable partial layers can be of the same, approximately the same or of a different material composition.
  • the laser-engravable recording element can, for example, have a thin top layer, the composition of which was selected with a view to optimum color transfer, while the composition of the layer below was selected with a view to optimum hardness and / or elasticity of the relief layer.
  • At least the uppermost of the layers contains the thermally decomposable, inorganic, non-oxidizing filler described. However, it is recommended that all layers contain the filler up to the maximum relief depth to be engraved, and preferably all layers contain the filler.
  • the thickness of the laser-engravable layer or of all layers together is generally between 0.1 and 7 mm.
  • the thickness is suitably chosen by the person skilled in the art depending on the intended use of the printing plate.
  • the crosslinkable, laser-engravable relief print element used as the starting material can optionally comprise further layers.
  • Examples of such layers include an elastomeric underlayer made of another formulation, which is located between the carrier and the laser-engravable layer (s) and which does not necessarily have to be laser-engravable.
  • the mechanical properties of the relief printing plates, in particular flexographic printing plates can be changed without influencing the properties of the actual printing relief layer.
  • So-called elastic substructures which are located under the dimensionally stable support of the laser-engravable recording element, that is to say on the side of the support facing away from the laser-engravable layer, serve the same purpose.
  • Other examples include adhesive layers that connect the support to layers above or different layers to one another.
  • the laser-engravable relief printing element can be protected against mechanical damage by a protective film, for example made of PET, which is located on the top layer in each case and which must be removed before laser engraving.
  • the protective film can also be siliconized to make it easier to peel off or be provided with a suitable stripping layer.
  • a printing relief is engraved into the cross-linked, laser-engravable layer by means of a laser.
  • Image elements are advantageously engraved in which the flanks of the image elements initially drop vertically and only widen in the lower region of the image element. This achieves a good base of the pixels with a slight increase in tone value. However, flanks of the image points with different designs can also be engraved.
  • Laser engraving is particularly suitable, as are CO 2 lasers with a wavelength of 10,640 nm, but also Nd-YAG lasers (1,064 nm) and IR diode lasers or solid-state lasers, which typically have wavelengths between 700 and 900 nm and between 1200 and 1600 nm.
  • lasers with shorter wavelengths can also be used, provided the laser is of sufficient intensity.
  • a frequency-doubled (532 nm) or frequency tripled (355 nm) Nd-YAG laser can also be used, or excimer lasers (eg 248 nm).
  • the image information to be engraved is transferred directly from the lay-out computer system to the laser apparatus.
  • the lasers can be operated either continuously or in pulsed mode.
  • the relief printing plate obtained can be used directly. If desired, the relief printing plate obtained can still be cleaned. Such a cleaning step removes layer components that are detached but may not yet be completely removed from the plate surface. As a rule, simple treatment with water or alcohol is completely sufficient.
  • the method according to the invention allows the efficiency of the process of laser engraving to be significantly increased without undesired widening of negative relief elements such as lines or dots occurring, or without impairing the storage stability to an undesirable extent.
  • the following examples are intended to explain the invention in more detail.
  • An apparatus with a rotating outer drum (circumference 659 mm without plate) was used to carry out the engraving tests.
  • the apparatus is equipped with a 40 W cw-Nd-YAG laser (from Wetzel, WFL 40).
  • the pressure plates were glued onto the outer drum.
  • the drum was accelerated to a speed of 1 revolution per second and it was engraved with a feed rate of 10 ⁇ m per revolution with a laser power of 9 W.
  • the test conditions were chosen the same for all samples.
  • the depth of an engraved full area (30 x 10 mm 2 ) was determined as a parameter for the efficiency of the engraving process.
  • Table 1 Depths of engraving in a full surface when adding different salts

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

La présente invention concerne un procédé pour produire des planches d'impression en relief, par application d'une couche gravable au laser, comprenant au moins un liant polymère, des composés polymérisables, un initiateur et une charge, sur un support à stabilité dimensionnelle, par réticulation de la couche sur toute la surface, puis par gravure dans la couche d'un relief d'impression, au moyen d'un laser. Ladite charge consiste en un composé inorganique, à action non oxydante et thermiquement décomposable, choisi dans le groupe formé par les composés alcalins, alcalino-terreux ou à base d'ammonium, à l'exception de CaCO3. La présente invention concerne également un élément d'impression en relief qui présente une couche de relief réticulée, pouvant être gravée au laser et comprenant au moins une des charges susmentionnées.
PCT/EP2002/002953 2001-03-21 2002-03-16 Procede pour produire des plaques d'impression en relief par gravure au laser WO2002076738A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10113927.6 2001-03-21
DE2001113927 DE10113927A1 (de) 2001-03-21 2001-03-21 Verfahren zur Herstellung von Reliefdruckplatten durch Lasergravur

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WO2002076738A1 true WO2002076738A1 (fr) 2002-10-03

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003037630A1 (fr) * 2001-10-29 2003-05-08 Kirk Engineering Services Australia Pty Ltd Elements d'imprimerie et procedes d'elaboration
WO2003101754A3 (fr) * 2002-05-31 2004-04-08 Buzz Sales Company Inc Systeme et procede directs permettant de graver des images au laser sur un substrat d'impression
JP2022552604A (ja) * 2019-09-16 2022-12-19 マシーネンファブリック カスパル ヴァルター ゲーエムベーハー ウント ツェーオー カーゲー 印刷版および該印刷版のための高分子コーティング材料

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JP5305793B2 (ja) * 2008-03-31 2013-10-02 富士フイルム株式会社 レリーフ印刷版及びレリーフ印刷版の製造方法
JP5398282B2 (ja) * 2008-09-17 2014-01-29 富士フイルム株式会社 レーザー彫刻用樹脂組成物、レーザー彫刻用レリーフ印刷版原版、レリーフ印刷版の製造方法、及びレリーフ印刷版
JP5320078B2 (ja) * 2009-01-05 2013-10-23 富士フイルム株式会社 製版装置及び印刷版製造方法
CN111070855B (zh) * 2019-12-09 2022-01-04 浙江硕克科技有限公司 一种金属膜网版的制造工艺

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EP0640043A1 (fr) 1992-05-11 1995-03-01 Du Pont Procede de realisation d'un cliche flexographique a couche unique.
EP0640044A1 (fr) 1992-05-11 1995-03-01 Du Pont Procede de realisation d'un cliche flexographique multicouche.
EP0710573A1 (fr) 1994-04-19 1996-05-08 Daicel Chemical Industries, Ltd. Plaque de presse d'imprimerie, procede de production de la plaque et procede d'impression avec la plaque
DE19953143A1 (de) 1999-04-26 2000-11-02 Creo Products Inc Verfahren zum prozeßfreien flexographischen Drucken und flexographische Druckplatte
EP1167025A2 (fr) * 2000-06-20 2002-01-02 JSR Corporation Matériau polymérique façonnable au laser

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Publication number Priority date Publication date Assignee Title
EP0640043A1 (fr) 1992-05-11 1995-03-01 Du Pont Procede de realisation d'un cliche flexographique a couche unique.
EP0640044A1 (fr) 1992-05-11 1995-03-01 Du Pont Procede de realisation d'un cliche flexographique multicouche.
US5798202A (en) * 1992-05-11 1998-08-25 E. I. Dupont De Nemours And Company Laser engravable single-layer flexographic printing element
US5804353A (en) * 1992-05-11 1998-09-08 E. I. Dupont De Nemours And Company Lasers engravable multilayer flexographic printing element
EP0710573A1 (fr) 1994-04-19 1996-05-08 Daicel Chemical Industries, Ltd. Plaque de presse d'imprimerie, procede de production de la plaque et procede d'impression avec la plaque
DE19953143A1 (de) 1999-04-26 2000-11-02 Creo Products Inc Verfahren zum prozeßfreien flexographischen Drucken und flexographische Druckplatte
EP1167025A2 (fr) * 2000-06-20 2002-01-02 JSR Corporation Matériau polymérique façonnable au laser

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003037630A1 (fr) * 2001-10-29 2003-05-08 Kirk Engineering Services Australia Pty Ltd Elements d'imprimerie et procedes d'elaboration
WO2003101754A3 (fr) * 2002-05-31 2004-04-08 Buzz Sales Company Inc Systeme et procede directs permettant de graver des images au laser sur un substrat d'impression
US7126619B2 (en) 2002-05-31 2006-10-24 Buzz Sales Company, Inc. System and method for direct laser engraving of images onto a printing substrate
JP2022552604A (ja) * 2019-09-16 2022-12-19 マシーネンファブリック カスパル ヴァルター ゲーエムベーハー ウント ツェーオー カーゲー 印刷版および該印刷版のための高分子コーティング材料
JP7629004B2 (ja) 2019-09-16 2025-02-12 マシーネンファブリック カスパル ヴァルター ゲーエムベーハー ウント ツェーオー カーゲー 印刷版および該印刷版のための高分子コーティング材料

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