EP0828613B1 - Method for the manufacture of a coloured mark - Google Patents
Method for the manufacture of a coloured mark Download PDFInfo
- Publication number
- EP0828613B1 EP0828613B1 EP96915217A EP96915217A EP0828613B1 EP 0828613 B1 EP0828613 B1 EP 0828613B1 EP 96915217 A EP96915217 A EP 96915217A EP 96915217 A EP96915217 A EP 96915217A EP 0828613 B1 EP0828613 B1 EP 0828613B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- colour
- laser light
- forming
- mark
- wavelength
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 239000004033 plastic Substances 0.000 claims abstract description 21
- 229920003023 plastic Polymers 0.000 claims abstract description 21
- 239000003086 colorant Substances 0.000 claims abstract description 10
- 230000001419 dependent effect Effects 0.000 claims abstract description 5
- 230000001678 irradiating effect Effects 0.000 claims abstract description 3
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000004061 bleaching Methods 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 11
- 230000005855 radiation Effects 0.000 description 7
- 239000004922 lacquer Substances 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 3
- -1 chalk Chemical compound 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 239000001052 yellow pigment Substances 0.000 description 3
- ORWQBKPSGDRPPA-UHFFFAOYSA-N 3-[2-[ethyl(methyl)amino]ethyl]-1h-indol-4-ol Chemical compound C1=CC(O)=C2C(CCN(C)CC)=CNC2=C1 ORWQBKPSGDRPPA-UHFFFAOYSA-N 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- 239000001055 blue pigment Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 239000001054 red pigment Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- IQFVPQOLBLOTPF-UHFFFAOYSA-L Congo Red Chemical compound [Na+].[Na+].C1=CC=CC2=C(N)C(N=NC3=CC=C(C=C3)C3=CC=C(C=C3)N=NC3=C(C4=CC=CC=C4C(=C3)S([O-])(=O)=O)N)=CC(S([O-])(=O)=O)=C21 IQFVPQOLBLOTPF-UHFFFAOYSA-L 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- CJDPJFRMHVXWPT-UHFFFAOYSA-N barium sulfide Chemical compound [S-2].[Ba+2] CJDPJFRMHVXWPT-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- LEYJJTBJCFGAQN-UHFFFAOYSA-N chembl1985378 Chemical compound OC1=CC=C2C=CC=CC2=C1N=NC(C=C1)=CC=C1N=NC1=CC=C(S(O)(=O)=O)C=C1 LEYJJTBJCFGAQN-UHFFFAOYSA-N 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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.
- the wavelength is not a factor determining the colour of the marking. In the method according to the invention, however, there is a direct relation between the wavelength of the radiation used to apply the marking and the colour of the marking.
- the wavelength of the laser light can be set to a value dependent on the chosen colour on the basis of the relationship thus obtained.
- 'Colour-forming components' are understood to be components that have a chromatic colour, such as colourants and pigments.
- White or black components including for example titanium dioxide, chalk, barium sulphide, carbon black or iron sulphide, are not understood to be included in the range of colour-forming components.
- 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 WO94/12352 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 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 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 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.
- 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-butadienestyrene copolymer (ABS) supplied by DSM, the Netherlands, 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.
- ABS acrylonitrile-butadienestyrene copolymer
- 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
- FDO frequency doubling optic
- 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 Hüls, 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.
- Laser settings Example I
- Example II Example III
- Example IV Example V ⁇ (nm)/colour ⁇ max (nm) from reflection spectra 430/violet 428 425 436 427 430 470/blue 475 471 481 468 490 575/yellow 580 575 585 572 520 650/orange 645 655 662 643 680
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Dot-Matrix Printers And Others (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Applications Claiming Priority (3)
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 | ||
PCT/NL1996/000197 WO1996035585A1 (en) | 1995-05-10 | 1996-05-08 | Method for the manufacture of a coloured mark |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0828613A1 EP0828613A1 (en) | 1998-03-18 |
EP0828613B1 true EP0828613B1 (en) | 1999-12-22 |
Family
ID=19761007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96915217A Expired - Lifetime EP0828613B1 (en) | 1995-05-10 | 1996-05-08 | Method for the manufacture of a coloured mark |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0828613B1 (nl) |
JP (1) | JPH11504879A (nl) |
AT (1) | ATE187934T1 (nl) |
AU (1) | AU5703996A (nl) |
DE (1) | DE69605788T2 (nl) |
ES (1) | ES2142063T3 (nl) |
NL (1) | NL1000331C2 (nl) |
WO (1) | WO1996035585A1 (nl) |
Families Citing this family (21)
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. |
AU6862598A (en) * | 1998-03-13 | 1999-09-27 | Siemens Audiologische Technik Gmbh | A laser marker |
AU7770200A (en) * | 1999-08-30 | 2001-03-26 | Orga Kartensysteme 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 |
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 |
DE10194517D2 (de) | 2000-11-04 | 2003-08-21 | Kurz Leonhard Fa | Kunststoffkörper als Folie, z.B. Transferfolie oder Laminierfolie ausgebildet oder mit einer solchen Folie versehen sowie Verfahren zur Herstellung eines Mehrfarbenbildes auf oder in einem solchen Kunststoffkörper |
DE10139719A1 (de) | 2000-11-04 | 2002-05-08 | Kurz Leonhard Fa | Mehrschichtkörper, insbesondere Mehrschichtenfolie sowie Verfahren zur Erhöhung der Fälschungssicherheit eines Mehrschichtenkörpers |
ATE381445T1 (de) | 2001-11-02 | 2008-01-15 | Kurz Leonhard Fa | Mehrschichtenkörper mit einer ersten lasersensitiven schicht und einer zweiten lasersensitiven schicht sowie verfahren zur erzeugung eines mehrschichtenbildes in einem solchen mehrschichtenkörper |
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 |
CN100406274C (zh) | 2002-05-08 | 2008-07-30 | 雷恩哈德库兹两合公司 | 多层图,特别是多色图 |
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 |
EP3505359A1 (en) | 2017-12-27 | 2019-07-03 | Gemalto Sa | Color laser marking of security document and a method for producing such security document |
EP3674100A1 (en) | 2018-12-28 | 2020-07-01 | Gemalto AG | Multilayer ablation features |
EP3674098A1 (en) | 2018-12-28 | 2020-07-01 | Gemalto AG | Ablation blockers |
WO2020212288A1 (en) | 2019-04-19 | 2020-10-22 | Gemalto Ag | Multilayer ablation features |
WO2020212289A1 (en) | 2019-04-19 | 2020-10-22 | Gemalto Ag | Ablation blockers |
EP4098455A1 (en) * | 2021-06-02 | 2022-12-07 | Thales DIS France SA | Ablative printed metallic layer |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU597240B2 (en) * | 1985-02-05 | 1990-05-31 | Ciba-Geigy Ag | Laser marking of pigmented systems |
EP0327508A3 (de) * | 1988-02-03 | 1991-02-06 | Ciba-Geigy Ag | Verfahren zur Laserbeschriftung pigmentierter Systeme |
DE59008746D1 (de) * | 1989-08-18 | 1995-04-27 | Ciba Geigy Ag | Lasermarkierung von Kunststoffgegenständen in an sich beliebiger Form mit besonderen Effekten. |
NL9202096A (nl) * | 1992-12-02 | 1993-04-01 | Dsm Nv | Polymeersamenstelling, bevattende een polymeer en tenminste een stralingsgevoelig bestanddeel. |
-
1995
- 1995-05-10 NL NL1000331A patent/NL1000331C2/nl not_active IP Right Cessation
-
1996
- 1996-05-08 DE DE69605788T patent/DE69605788T2/de not_active Expired - Fee Related
- 1996-05-08 JP JP8533964A patent/JPH11504879A/ja not_active Ceased
- 1996-05-08 ES ES96915217T patent/ES2142063T3/es not_active Expired - Lifetime
- 1996-05-08 AU AU57039/96A patent/AU5703996A/en not_active Abandoned
- 1996-05-08 EP EP96915217A patent/EP0828613B1/en not_active Expired - Lifetime
- 1996-05-08 AT AT96915217T patent/ATE187934T1/de not_active IP Right Cessation
- 1996-05-08 WO PCT/NL1996/000197 patent/WO1996035585A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
AU5703996A (en) | 1996-11-29 |
EP0828613A1 (en) | 1998-03-18 |
DE69605788T2 (de) | 2000-08-03 |
ES2142063T3 (es) | 2000-04-01 |
DE69605788D1 (de) | 2000-01-27 |
JPH11504879A (ja) | 1999-05-11 |
ATE187934T1 (de) | 2000-01-15 |
NL1000331C2 (nl) | 1996-11-12 |
WO1996035585A1 (en) | 1996-11-14 |
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