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WO1996035585A1 - Procede de fabrication d'une marque coloree - Google Patents

Procede de fabrication d'une marque coloree Download PDF

Info

Publication number
WO1996035585A1
WO1996035585A1 PCT/NL1996/000197 NL9600197W WO9635585A1 WO 1996035585 A1 WO1996035585 A1 WO 1996035585A1 NL 9600197 W NL9600197 W NL 9600197W WO 9635585 A1 WO9635585 A1 WO 9635585A1
Authority
WO
WIPO (PCT)
Prior art keywords
colour
laser light
mark
wavelength
chosen
Prior art date
Application number
PCT/NL1996/000197
Other languages
English (en)
Inventor
Olav Markus Aagaard
Wilhelmus Henricus Hubertus Antonius Van Den Elshout
Original Assignee
Dsm N.V.
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 Dsm N.V. filed Critical Dsm N.V.
Priority to JP8533964A priority Critical patent/JPH11504879A/ja
Priority to AT96915217T priority patent/ATE187934T1/de
Priority to EP96915217A priority patent/EP0828613B1/fr
Priority to AU57039/96A priority patent/AU5703996A/en
Priority to DE69605788T priority patent/DE69605788T2/de
Publication of WO1996035585A1 publication Critical patent/WO1996035585A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/267—Marking of plastic artifacts, e.g. with laser

Definitions

  • the invention relates to a method for the manufacture of an object with a coloured mark, by irradiating the surface of an object with laser light in the shape of the mark.
  • a problem involved in the known method is that the colours that are obtained are not freely chosen, but accidentally obtained. Furthermore, only a limited number of different colours is obtained.
  • the invention aims to provide a method that does not present the above drawbacks.
  • the part of the object where the mark is applied consists of a plastic composition that contains at least three colour-forming components that lose their colour-forming capacity under the influence of laser light, which are chosen so and are each present in such a concentration that at every wavelength between 400 and 700 nanometres (nm) at least a portion of the amount of incident light is absorbed, one or more colours being chosen for the mark, the wavelength of the laser light subsequently being set to a value that is dependent on the chosen colour and the surface of the object subsequently being irradiated with the laser light.
  • marks of any or almost any predetermined colour can be obtained, simply by setting the wavelength of the laser light to a value determined for that purpose.
  • the plastic composition may in general contain any thermoplastic or thermosetting plastic or any elastomer. Very suitable are the plastics which the plastic composition in W094/12352 may contain.
  • the colour-forming components are each present in such a concentration that at every • wavelength between 400 and 700 nm at least 20%, more preferably at least 50% and even more preferably at least 80%, of the amount of incident light, expressed in lux, is absorbed.
  • a person skilled in the art will be able to easily choose the colour-forming components and the concentration, measure the amount of light absorbed at every wavelength between 400 and 700 nm (the absorption spectrum) with the aid of one of the known measuring methods and then adjust the colour-forming component and its concentration until the desired absorption spectrum is obtained.
  • the method according to the invention can be carried out with the aid of one or more laser apparatuses, which irradiate laser light with a wavelength that corresponds to the value chosen for the wavelength on the basis of the desired colour of the mark.
  • the method according to the invention is carried out with the aid of a laser apparatus with an adjustable wavelength.
  • a laser apparatus with an adjustable wavelength.
  • the wavelength required for the colour chosen for the mark can easily be set. It is then also possible to obtain a mark containing more than one colour with the aid of one apparatus.
  • the surface of the plastic composition is irradiated with laser light at at least three different wavelengths, more preferably at a multitude of wavelengths, which are dependent on the colours chosen for the mark.
  • marks are obtained that contain a multitude of colours and may even approach or, if use is made of a laser beam with a very small cross-section, even surpass the quality of a colour photograph.
  • Very good results are obtained if the cross section of the laser beam is equal to or smaller than the grain diameter of a colour photograph.
  • a characteristic value for such a grain diameter is 0.5-3 micrometres.
  • the plastic composition according to the invention contains only colour-forming components that lose their colour-forming capacity under the influence of laser light and the colour- forming components have each one single absorption band (the concept 'absorption band' is described in Colour Chemistry, 2nd edition, H. Zollinger, VCH Verlag Weinheim, Germany (1991), ISBN 3-527-28352-8) .
  • the wavelength of the colour in which the mark is obtained corresponds to the wavelength of the laser light with which the surface of the plastic composition is irradiated. In that way it is very easy to obtain the chosen colour, because the chosen colour will practically correspond to the colour of the laser light.
  • the colour chosen for the mark will correspond more or even entirely to the colour of the laser light if the colour forming components and their concentrations are choosen so that, between 400 and 700 nm, at least approximately the same amount of light is absorbed at every wavelength.
  • the amounts of light absorbed per wavelength differ not more than 20% from one another, more preferably 10%, even more preferably 5%.
  • the surface of the object additionally has a neutral grey or black colour before the mark is applied.
  • the plastic composition contains a first colour-forming component that reflects light whose main colour is yellow, a second colour-forming component that reflects light whose main colour is magenta and a third colour- forming component that reflects light whose main colour is cyan.
  • the colour-forming components have a comparable bleaching efficiency for the laser light. 'Bleaching efficiency' is understood to be the length of time it takes a colour-forming component, irradiated with laser light of a certain intensity, to lose 80% of its light-absorbing capacity, light absorbing capacity being the quotient of (1 - amount of reflected light) and the amount of incident light, both expressed in lux.
  • the different components' bleaching efficiencies do not differ more than 20% from one another, more preferably not more than 10%. That ensures that during the method, if a mark having more than one colour is applied, only the wavelength of the laser apparatus or laser apparatuses will have to be set per colour and for example the duration of the treatment and the intensity of the laser light may simply have the same value for every colour. It is also important that the colour-forming components do not or virtually not lose their colour- forming capacity under normal daylight. Therefore the colour-forming components preferably have a colour stability of at least 3, more preferably at least 5, on Wool's scale (according to DIN 54003).
  • the invention also relates to an information carrier, at least one surface of which consists of the plastic composition described above and preferably at least 50% of which surface is covered with one or more marks.
  • Such an information carrier can be provided with a mark with the aid of the method according to the invention.
  • the mark may contain any desired colour.
  • the mark may even have the form of a true-to-nature representation of for example objects, animals or persons. It is also possible for at least 50% of the surface of the information carrier to be covered with text.
  • Examples of such information carriers are posters, signboards, company signs, advertisement boards, etcetera.
  • the information carrier has a supporting layer, which supports the layer consisting of the plastic composition. That way the layer consisting of the plastic composition may have a small thickness and different types of information carriers, depending on the type of supporting layer chosen, are obtained for all kinds of purposes.
  • the supporting layer may for example consist of paper and the information carrier may have the form of a colour photograph or a photocopy.
  • the supporting layer may also consist of a plastic or a metal.
  • the plastic of the plastic composition is chosen so that it adheres well to the supporting layer.
  • the invention also relates to an object that is to be processed into the information carrier described above.
  • a dry blend was prepared from 1897 parts by weight of Ronfalin R SFA-34, an acrylonitrile-butadiene- styrene copolymer (ABS) supplied by DSM, the
  • Tiofine R R41 100 parts by weight of Tiofine R R41, a titanium dioxide pigment supplied by Tiofine, the Netherlands, and 1 part by weight of Irgalith R Rubine 4 BP, 1 part by weight of Irgalith Blue LGLD and 1 part by weight of Cromophtal R Yellow 6G, magenta, cyan and yellow pigments, respectively, supplied by Ciba-Geigy, the Netherlands.
  • the dry blend was melted, kneaded at 260°C and processed into granulate.
  • the granulate was injection-moulded into plates measuring 3.2*120*120 mm with the aid of an Arburg Allrounder R 320-90-750 type of injection- moulding machine, at a temperature of 240°C.
  • the coloured pigments in the plates absorb the visible light.
  • the plates had a light grey colour.
  • the laser setup contained an EEO R - 355 type of seeding laser, which was used as a pump laser for a GCR R -230/50 type of Nd:YAG laser.
  • the laser setup also included a MOPO R 710 type of optical parameter oscillator (OPO), which received the signal from the latter laser via a frequency doubling optic (FDO).
  • OPO optical parameter oscillator
  • the setup was supplied by Spectra-Physics, USA. The following laser settings were chosen: Pulse length: 10 ns Q switch frequency: 10 Hz dot diameter: 8 mm Writing speed: 30 mm/s line distance: 5 mm.
  • Example I was repeated, only Stamylan P R 83 MF 10, a polypropylene supplied by DSM, the Netherlands, was used instead of ABS. The results are shown in Table 1.
  • a dry blend was prepared from 98.74 parts by weight of Arnitel R TV4 261, a polybutylene terephthalate supplied by DSM, the Netherlands, 0.03 parts by weight of Paliogen R Red K 3911 HD, a red pigment supplied by BASF, the Netherlands, 0.75 parts by weight of Meteor Plus R Teal Blue, a cyan pigment supplied by Engelhard, Germany, 0.03 parts by weight of PV Echtgelb R HG, a yellow pigment supplied by Hoechst, the Netherlands, 0.3 parts by weight of Kronos R CL 220, a titanium dioxide pigment supplied by Kronos, the Netherlands, and 0.15 parts by weight of magnesium stearate.
  • Example 1 The dry blend was injection moulded into plates as described in Example I, only at a temperature of 260°C.
  • the plates had a moss grey colour.
  • the surface of the plates was provided with marks as described in Example I. The results are shown in Table 1.
  • a lacquer was prepared in a beaker by vigorously stirring 65.0 parts by weight of Uracron R HDT EV 412, a hydroxyl-functional resin supplied by DSM Resins, the Netherlands, 20.8 parts by weight of Tolonate R HDT EV 412, supplied by Huls, Germany, 0.6 parts by weight of dibutyl tin laureate, supplied by Aldrich, Belgium, 10.0 parts by weight of Kronos R CL 220, 1.2 parts by weight of Cromophtal R Yellow 3G, a yellow pigment supplied by Ciba-Geigy, the Netherlands, 1.2 parts by weight of Paliogen R Red L 3910 HD, a red pigment supplied by BASF, the Netherlands, and 1.2 parts by weight of Orasol R Blue GN, a blue pigment supplied by Ciba-Geigy, the Netherlands.
  • the lacquer was applied to an aluminium plate in a layer with a thickness of 50 micrometres.
  • the lacquer layer had a grey colour. Marks were applied in the lacquer layer as described in Example I, only the line distance was set to 1 mm. The results are shown in Table 1.
  • Example IV was repeated, only the concentrations of the yellow and the blue pigment were raised to 1.8 parts by weight.
  • the lacquer layer had a green colour. The results are included in Table 1.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un objet comportant une marque colorée, par irradiation de la surface de l'objet par de la lumière laser de même forme que la marque, l'objet, au moins sur la zone d'application de la marque, consistant en une composition plastique contenant au moins trois constituants chromogènes perdant leur caractéristique chromogène sous l'influence de la lumière laser. La concentration de ces constituants est sélectionnée de telle manière qu'à chaque longueur d'ondes entre 400 et 700 nanomètres, au moins une partie de la quantité de lumière incidente est absorbée, une ou plusieurs couleurs étant sélectionnées pour la marque, la longueur d'ondes de la lumière laser étant ensuite réglée à une valeur en fonction de la couleur sélectionnée et la surface de l'objet étant irradiée par la lumière laser.
PCT/NL1996/000197 1995-05-10 1996-05-08 Procede de fabrication d'une marque coloree WO1996035585A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP8533964A JPH11504879A (ja) 1995-05-10 1996-05-08 着色マークの製造法
AT96915217T ATE187934T1 (de) 1995-05-10 1996-05-08 Aufzeichnungsverfahren einer gefärbten beschriftung
EP96915217A EP0828613B1 (fr) 1995-05-10 1996-05-08 Procede de fabrication d'une marque coloree
AU57039/96A AU5703996A (en) 1995-05-10 1996-05-08 Method for the manufacture of a coloured mark
DE69605788T DE69605788T2 (de) 1995-05-10 1996-05-08 Aufzeichnungsverfahren einer gefärbten beschriftung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1000331A NL1000331C2 (nl) 1995-05-10 1995-05-10 Werkwijze voor de vervaardiging van een gekleurde markering.
NL1000331 1995-05-10

Publications (1)

Publication Number Publication Date
WO1996035585A1 true WO1996035585A1 (fr) 1996-11-14

Family

ID=19761007

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1996/000197 WO1996035585A1 (fr) 1995-05-10 1996-05-08 Procede de fabrication d'une marque coloree

Country Status (8)

Country Link
EP (1) EP0828613B1 (fr)
JP (1) JPH11504879A (fr)
AT (1) ATE187934T1 (fr)
AU (1) AU5703996A (fr)
DE (1) DE69605788T2 (fr)
ES (1) ES2142063T3 (fr)
NL (1) NL1000331C2 (fr)
WO (1) WO1996035585A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019868A1 (fr) * 1996-11-07 1998-05-14 Dsm N.V. Procede de fabrication d'un objet a marquage de couleur
WO1999046131A1 (fr) * 1998-03-13 1999-09-16 Siemens Audiologische Technik Gmbh Marqueur laser
DE19955383A1 (de) * 1999-10-29 2001-05-03 Orga Kartensysteme Gmbh Verfahren zum Aufbringen von farbigen Informationen auf einen Gegenstand
WO2001036208A3 (fr) * 1999-11-18 2002-02-28 Orga Kartensysteme Gmbh Procede pour appliquer des informations en couleur sur un objet
DE10054803A1 (de) * 2000-11-04 2002-05-29 Kurz Leonhard Fa Kunststoffkörper, insbesondere massiver Kunststoffkörper oder Folie, z. B. Transferfolie oder Laminierfolie sowie Verfahren zur Herstellung eines Mehrfarbenbildes auf oder in einem solchen Kunststoffkörper
WO2003039888A1 (fr) 2001-11-02 2003-05-15 Leonhard Kurz Gmbh & Co. Kg Corps multicouche comprenant une premiere et une seconde couche sensible au laser et procede pour produire une image mutlicouche dans ce corps
EP1413456A2 (fr) 2000-11-04 2004-04-28 Leonhard Kurz GmbH & Co. KG Corps en matière plastique sous forme de film, par exemple film de transfert ou film laminé, ou muni d'un tel film et procédé permettant de produire une image polychrome sur ou dans un corps en matière plastique de ce type
US7198302B1 (en) * 1999-08-30 2007-04-03 Orga Systems Gmbh Card-shaped data carrier and method for producing same
US7255911B2 (en) 2000-11-04 2007-08-14 Leonard Durz Gmbh & Co. Kg Laminate body, in particular a laminate foil and a method of increasing the forgery-proof nature of laminate body
US7368217B2 (en) 2002-05-08 2008-05-06 Orga Systems Gmbh Multilayer image, particularly a multicolor image
EP3505359A1 (fr) 2017-12-27 2019-07-03 Gemalto Sa Marquage laser couleur d'un document de sécurité et procédé de production d'un tel document de sécurité
EP3674100A1 (fr) 2018-12-28 2020-07-01 Gemalto AG Caractéristiques d'ablation multicouche
EP3674098A1 (fr) 2018-12-28 2020-07-01 Gemalto AG Bloqueurs d'ablation
WO2020212288A1 (fr) 2019-04-19 2020-10-22 Gemalto Ag Caractéristiques d'ablation multicouche
WO2020212289A1 (fr) 2019-04-19 2020-10-22 Gemalto Ag Bloqueurs d'ablation
WO2022253972A1 (fr) * 2021-06-02 2022-12-08 Thales Dis France Sas Couche métallique imprimée selon une technique d'ablation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3780908B2 (ja) * 2001-11-06 2006-05-31 松下電工株式会社 加飾部を有する樹脂成形体及びその製造方法
DE102008046124A1 (de) * 2008-09-05 2010-03-11 Daimler Ag Verfahren zur Oberflächenbehandlung von Bauteilen
DE102010010070A1 (de) 2010-02-26 2011-09-01 Bundesdruckerei Gmbh Markierungsvorrichtung und Verfahren zum Markieren von Wert- oder Sicherheitsdokumenten mit hoher Auflösung
DE102010010071A1 (de) 2010-02-26 2011-09-01 Bundesdruckerei Gmbh Markierungsvorrichtung und Verfahren zum Markieren von Wert- oder Sicherheitsdokumenten unter Verwendung von Lichtleitfasern
DE102010010072A1 (de) 2010-02-26 2011-09-01 Bundesdruckerei Gmbh Markierungsvorrichtung und Verfahren zum farbigen Markieren von Wert- oder Sicherheitsdokumenten

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190997A2 (fr) * 1985-02-05 1986-08-13 Ciba-Geigy Ag Ecriture par laser sur systèmes pigmentés
EP0327508A2 (fr) * 1988-02-03 1989-08-09 Ciba-Geigy Ag Procédé pour marquage par laser de systèmes pigmentés
EP0413664A2 (fr) * 1989-08-18 1991-02-20 Ciba-Geigy Ag Marquage par laser d'objets en plastique de toutes sortes utilisant des effets spéciaux
WO1994012352A1 (fr) * 1992-12-02 1994-06-09 Dsm N.V. Composition polymere contenant un polymere et au moins une substance sensible aux radiations

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190997A2 (fr) * 1985-02-05 1986-08-13 Ciba-Geigy Ag Ecriture par laser sur systèmes pigmentés
EP0327508A2 (fr) * 1988-02-03 1989-08-09 Ciba-Geigy Ag Procédé pour marquage par laser de systèmes pigmentés
EP0413664A2 (fr) * 1989-08-18 1991-02-20 Ciba-Geigy Ag Marquage par laser d'objets en plastique de toutes sortes utilisant des effets spéciaux
WO1994012352A1 (fr) * 1992-12-02 1994-06-09 Dsm N.V. Composition polymere contenant un polymere et au moins une substance sensible aux radiations

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1010743A3 (nl) * 1996-11-07 1999-01-05 Dsm Nv Werkwijze voor de vervaardiging van een voorwerp met gekleurde markering.
WO1998019868A1 (fr) * 1996-11-07 1998-05-14 Dsm N.V. Procede de fabrication d'un objet a marquage de couleur
WO1999046131A1 (fr) * 1998-03-13 1999-09-16 Siemens Audiologische Technik Gmbh Marqueur laser
US7198302B1 (en) * 1999-08-30 2007-04-03 Orga Systems Gmbh Card-shaped data carrier and method for producing same
DE19955383A1 (de) * 1999-10-29 2001-05-03 Orga Kartensysteme Gmbh Verfahren zum Aufbringen von farbigen Informationen auf einen Gegenstand
US7158145B1 (en) 1999-11-18 2007-01-02 Orga Systems Gmbh Method for applying colored information on an object
WO2001036208A3 (fr) * 1999-11-18 2002-02-28 Orga Kartensysteme Gmbh Procede pour appliquer des informations en couleur sur un objet
DE10054803A1 (de) * 2000-11-04 2002-05-29 Kurz Leonhard Fa Kunststoffkörper, insbesondere massiver Kunststoffkörper oder Folie, z. B. Transferfolie oder Laminierfolie sowie Verfahren zur Herstellung eines Mehrfarbenbildes auf oder in einem solchen Kunststoffkörper
US7403651B2 (en) 2000-11-04 2008-07-22 Leonhard Kurz Gmbh & Co. Kg Plastic body in the form of a film, for example a transfer film or laminating film, or provided with such a film and a process for the production of a multi-color image on or in such a plastic body
EP1413456A2 (fr) 2000-11-04 2004-04-28 Leonhard Kurz GmbH & Co. KG Corps en matière plastique sous forme de film, par exemple film de transfert ou film laminé, ou muni d'un tel film et procédé permettant de produire une image polychrome sur ou dans un corps en matière plastique de ce type
EP1413456A3 (fr) * 2000-11-04 2004-05-26 Leonhard Kurz GmbH & Co. KG Corps en matière plastique sous forme de film, par exemple film de transfert ou film laminé, ou muni d'un tel film et procédé permettant de produire une image polychrome sur ou dans un corps en matière plastique de ce type
US7255911B2 (en) 2000-11-04 2007-08-14 Leonard Durz Gmbh & Co. Kg Laminate body, in particular a laminate foil and a method of increasing the forgery-proof nature of laminate body
US7300694B2 (en) 2000-11-04 2007-11-27 Leonard Kurz Gmbh & Co. Kg Multilayer body with a first laser-sensitive layer and a second laser-sensitive layer and method for generation of a multilayer image in said multilayer body
WO2003039888A1 (fr) 2001-11-02 2003-05-15 Leonhard Kurz Gmbh & Co. Kg Corps multicouche comprenant une premiere et une seconde couche sensible au laser et procede pour produire une image mutlicouche dans ce corps
US7368217B2 (en) 2002-05-08 2008-05-06 Orga Systems Gmbh Multilayer image, particularly a multicolor image
EP3505359A1 (fr) 2017-12-27 2019-07-03 Gemalto Sa Marquage laser couleur d'un document de sécurité et procédé de production d'un tel document de sécurité
WO2019129527A1 (fr) 2017-12-27 2019-07-04 Gemalto Sa Marquage laser couleur d'un document de sécurité et procédé de fabrication d'un tel document de sécurité
US11084315B2 (en) 2017-12-27 2021-08-10 Thales Dis France Sa Color laser marking of security document and a method for producing such security document
EP3674100A1 (fr) 2018-12-28 2020-07-01 Gemalto AG Caractéristiques d'ablation multicouche
EP3674098A1 (fr) 2018-12-28 2020-07-01 Gemalto AG Bloqueurs d'ablation
WO2020212288A1 (fr) 2019-04-19 2020-10-22 Gemalto Ag Caractéristiques d'ablation multicouche
WO2020212289A1 (fr) 2019-04-19 2020-10-22 Gemalto Ag Bloqueurs d'ablation
WO2022253972A1 (fr) * 2021-06-02 2022-12-08 Thales Dis France Sas Couche métallique imprimée selon une technique d'ablation

Also Published As

Publication number Publication date
EP0828613A1 (fr) 1998-03-18
EP0828613B1 (fr) 1999-12-22
ES2142063T3 (es) 2000-04-01
AU5703996A (en) 1996-11-29
DE69605788T2 (de) 2000-08-03
ATE187934T1 (de) 2000-01-15
JPH11504879A (ja) 1999-05-11
DE69605788D1 (de) 2000-01-27
NL1000331C2 (nl) 1996-11-12

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