EP0395496B2 - Feuille destinée à être soumise à l'action de la lumière, comportant des moyens de reconnaissance et de sécurité et application d'une telle feuille - Google Patents
Feuille destinée à être soumise à l'action de la lumière, comportant des moyens de reconnaissance et de sécurité et application d'une telle feuille Download PDFInfo
- Publication number
- EP0395496B2 EP0395496B2 EP90401105A EP90401105A EP0395496B2 EP 0395496 B2 EP0395496 B2 EP 0395496B2 EP 90401105 A EP90401105 A EP 90401105A EP 90401105 A EP90401105 A EP 90401105A EP 0395496 B2 EP0395496 B2 EP 0395496B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- sheet
- pigment
- fact
- use according
- 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
- 239000000049 pigment Substances 0.000 claims abstract description 32
- 230000002035 prolonged effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 239000000123 paper Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical group [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 11
- 239000005083 Zinc sulfide Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229910052980 cadmium sulfide Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- CJOBVZJTOIVNNF-UHFFFAOYSA-N cadmium sulfide Chemical compound [Cd]=S CJOBVZJTOIVNNF-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 229910052976 metal sulfide Inorganic materials 0.000 claims 1
- 238000007639 printing Methods 0.000 abstract description 13
- 239000000976 ink Substances 0.000 description 14
- 239000000126 substance Substances 0.000 description 10
- 229920001187 thermosetting polymer Polymers 0.000 description 6
- 229910052984 zinc sulfide Inorganic materials 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000000280 densification Methods 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 238000007646 gravure printing Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 210000002268 wool Anatomy 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- MSYLJRIXVZCQHW-UHFFFAOYSA-N formaldehyde;6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound O=C.NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 MSYLJRIXVZCQHW-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/06—Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles
Definitions
- the invention relates to a decorative sheet usable for the manufacture of laminated panels, this sheet further comprising means of recognition and security.
- the invention further relates to a composition to print such a sheet.
- laminates have been used as materials in dwellings and premises commercial and industrial. Typical applications of such laminates are the surface coating of walls, table tops, furniture and more.
- the so-called high pressure laminates are produced from a core consisting of sheets impregnated with resin.
- the sheets are generally sheets of kraft paper which has been impregnated with a thermosetting resin and more particularly of a phenolic resin.
- the sheets are dried, cut, then stacked on top of each other.
- the number of sheets in the stack depends on the applications and can vary between 3 and 9, but can be higher.
- a decorative sheet which is generally a sheet of paper bearing a printed or light-colored pattern, and impregnated with a non-blackening thermosetting resin not heat, for example melamine-formaldehyde resins, benzoguanamine-formaldehyde resins, unsaturated polyester resins.
- a protective cover sheet devoid of pattern and transparent in the final laminate. In terms by trade, this protective sheet is called "over-lay”.
- thermosetting resins are transformed into thermoset form and obtains an extremely hard material with a decorative effect.
- the decorative sheet is traditionally made in the following manner.
- We make a sheet of paper by draining an aqueous suspension of long and / or short cellulose fibers on a flat canvas, bleached and / or unbleached, fillers, binders.
- the sheet thus formed is drained, pressed and dried to form a sheet of paper.
- This sheet is then printed.
- the usual impression is a rotogravure printing using engraved rollers.
- the engraving technique consists of making a drawing, for example reproducing a wood or a purely fancy artistic drawing.
- one or more printing rollers are engraved.
- Each cylinder then passes through an ink bath, and the indentations or imprints engraved in the cylinder are filled ink which is then transferred to the paper.
- one to five separate prints are made and successive using one to five rollers.
- the gravure printing process allows from a drawing to print a sheet of paper.
- this poses a problem for the printer of the decorative sheet. Indeed, if the drawing is a original drawing, created by the printer, any other printer, from a printed decorative sheet, may have photographs taken of this sheet and have cylinders engraved for the same impression. Counterfeits can therefore be numerous and it is generally not possible to detect them or have intangible proof that these are counterfeits.
- the invention therefore aims to solve this problem.
- Another problem that arises is the identification of the laminate manufacturer. Indeed, the sheet maker decorative can sell the same authentic sheet to several laminate manufacturers. Each manufacturer of laminate generally bears its mark on the laminate, by means of a more or less removable label. Here again, there is the problem of identifying the manufacturer of a particular laminate. The invention aims to solve this second problem.
- An object of the invention is therefore to provide a decorative sheet for laminated panels, comprising means of recognizing the origin of laminates.
- the first design is invisible to natural light and the second design is visible to light artificial.
- natural light is meant a light source whose wavelengths are included between 400 and 700 nanometers and by artificial light, a light source whose wavelengths are less than 400 nanometers and more than 700 nanometers.
- pigments and dyes are luminescent. These materials are commonly called "phosphorus". These pigments can be fluorescent or phosphorescent.
- the feeling of color produced by conventional pigments or dyes which are not luminescent results from selective absorption wavelengths in the visit part of the spectrum. Wavelengths that are not absorbed are reflected or transmitted, which gives the feeling of color. This feeling of color is absent when there is no visible light source, because there is no energy to reflect or transmit.
- luminescent pigments do not reflect light, but they are sources of light themselves. They have the property of absorbing certain wavelengths, generally wavelengths less than 400 nanometers and invisible to the eye, and transform these wavelengths into visible wavelengths. The wavelengths thus emitted produce a feeling of color. When the emission of light continues for a significant period of time, after the excitation energy source has been switched off, the material is said to be phosphorescent.
- Document EP-A-147252 describes a mixture of a luminescent substance and an anti-storage substance. Such a mixture can be used for marking documents to prevent counterfeiting, for example example of bank notes, fiduciary papers.
- the compositions can be introduced on paper and can be introduced into printing inks. These inks are fatty inks, i.e. containing an oil and the printing is done by offset or intaglio. So far, the problem of marking heat resistant sheets that can be used to decorate laminates have never been laid.
- Document AU-A-518 156 describes a sheet of paper comprising at least one printing light-resistant having a first light shade of wavelength between 400 and 700 nm and a second shade different from the first at a wavelength less than 400 nm, printing being an intaglio print. However, it is not a paper usable for the manufacture of laminates.
- Document DE-A-2 910 176 describes a method for characterizing disc packaging using a fluorescent print.
- GB-2,147,542 describes an article printed using fluorescent or synthetic material.
- the document EP 0253 543 describes a printing ink comprising a metallic compound, a compound luminescent and one or more inert compounds. Such ink is used for credit cards.
- an essential technical problem to be solved is the fact that the sheets are intended to be submitted with heat, for a period of several tens of minutes, or even several hours.
- the sheet is subjected to temperatures of more than 100 ° C, for 20 minutes.
- these papers are subjected to high temperatures, especially when hot stamping is carried out.
- Marking sheets for example for laminates, also poses different and additional problems marking paper for banknotes and other security documents.
- the decorative sheets for laminates are necessarily impregnated with a thermosetting resin.
- the impregnated sheet is placed on a particle board or a stack of impregnated kraft paper sheets. Then we press the assembly against a sheet.
- a problem technique posed is that the prints should not transfer from the decorative sheet onto the sheet which must remain sharp.
- a second technical problem to be solved is that during the impregnation, the decorative sheet passes in an impregnation bath.
- the prints should therefore not migrate into the impregnation bath and should not must not pollute it. Indeed, if the impregnation resin is polluted by printing, during lamination posterior, the thermosetting resin creeps under the action of heat and pressure and if it contains luminescent printing substances, these flow at the same time and cause a smear of the final impression.
- the luminescent substances used have a very good resistance to light.
- these sheets can be used for panels used as materials in homes and above furniture and so they are intended to be subjected to the action of light during periods of extended times.
- the Applicant has tried many commercially available luminescent substances and has found that the ones that work well are mineral pigments. Indeed, organic molecules are very sensitive to outdoor conditions and degrade easily in light, as well as in heat.
- the Applicant has been able to use mineral pigments having a very good resistance to light and withstand high temperatures for long periods of time, i.e. higher temperatures at 100 ° C, preferably between 140 and 200 ° C, for example 140-150 ° C for at least 10 min at 2 hours, for example 20 to 30 minutes.
- luminescent substances used according to the invention such that the zinc sulfides or their mixture with other metallic sulfides are heat resistant, for time periods of more than 10 min.
- the luminescent substances are pigments based on zinc sulfide in mixture with cadmium sulfide. These pigments can have a particle size of less than 40 micrometers.
- Pigments of zinc sulfide or zinc sulfide and cadmium which are activated by copper can be used. Their preparation method is known and is for example described in H.W. Leverenz, An introduction to luminescence of solids: S. John, Wiley & Sons, Inc. New York, Chapman & Hall Ltd London, 1950.
- Pigments based on zinc sulfide emitting in various wavelengths have been described in the Patent applications EP-A-34059, EP-A-78538, EP-A-91184 filed by the Japanese company KASEI OPTONIX. Pigments which are well suited are also pigments based on zinc sulphide, produced by the German company RIEDEL DE HAEN.
- mixtures of luminescent substances can be used, provided that they are resistant to light, heat, pressure, as mentioned above.
- This mixture is applied to a sheet of white paper of 90 g / m2 by gravure printing.
- the cylinder was etched by electronic etching, the cells having a depth of 37 micrometers, the height of the frame being 190 micrometers, and the width of the frame being 210 micrometers.
- the size of the pigment particles is approximately 0.1 to 40 micrometers, which allows printing with such cells. You get a paper that is white in daylight, but when it is illuminated by rays ultraviolet, a blue print appears when the white paper turns brown because it does not reflect and does not does not transmit light.
- This sheet is subjected to a temperature of 160 ° C. by placing it between two hot plates for 15 minutes. Then we illuminate the paper with UV rays. The blue print appears again.
- Example 2 The same mixture is made as in Example 1, but the mineral pigment is replaced by an organic pigment which is an N-substituted anthranilic acid of the type described in document DE-A-3225966.
- an organic pigment which is an N-substituted anthranilic acid of the type described in document DE-A-3225966.
- Example 2 The same mixture is made as in Example 1, with pigments sold by the company OPTONIX, under different numbers.
- the light resistance is 3 to 6 measured according to the Wool scale test and the rays resistance ultraviolet is 5 to 6.
- the Wool scale test corresponds to standards NF T 51056 and NF T 51058. It consists in lighting up a sample including printing with a xenon lamp for 90 hours or 300 hours and at compare the sample obtained with strands of wool with shades ranging from 1 to 8, the number 1 corresponding to the degradation of shade, the number 8 corresponding to a non-degradation.
- Paper is printed by heliography, using one to five color prints in the traditional way. This paper is then decorated and has this decorative aspect and visible by lighting in natural light. We then makes a heliography printing by making one to three prints using the mixtures ink from examples 1 to 9. The original drawing is not changed in natural light. When we light the paper in ultra-violet light, the initial drawing disappears and it is the superimposed drawing that becomes visible.
- the invention relates not only to a means of marking and recognizing subject sheets at temperature, and / or pressure and light, for long periods of time, but also concerns a new means of decoration of these leaves.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Textile Engineering (AREA)
- Vascular Medicine (AREA)
- Laminated Bodies (AREA)
- Road Signs Or Road Markings (AREA)
- Pens And Brushes (AREA)
- Printing Methods (AREA)
- Toys (AREA)
- Paper (AREA)
Description
- comportant une impression au moins résistant à la lumière,
- présentant une première teinte à la lumière d'onde de longueur d'onde comprise entre 400 et 700 nanomètres et une seconde teinte différente de la première à la lumière de longueur d'onde inférieure à 400 nanomètres et supérieure à 700 nanomètres,
- portant une impression héliographique à l'aide d'encre liquide, l'encre comportant au moins un pigment luminescent résistant à des températures supérieures à 100°C pendant au moins 10 minutes et résistant à une action prolongée de la lumière.
- 18,9
- parties de pigment vendu par la société RIEDEL DE HAEN sous la référence Lumilux CD 704. Il s'agit d'un sulfure de zinc.
- 9
- parties d'eau
- 3
- parties d'alcool, de préférence l'éthanol
- 8,8
- parties de vernis ou liant pour encre 992209 vendu par SICPA
- 26,9
- parties de vernis 991129 vendu par SICPA
- 33,5
- parties d'un mélange éthanol (2/3) eau (1/3).
Claims (8)
- Utilisation comme feuille décorative de panneaux stratifiés utilisés comme matériaux dans les habitations et les locaux commerciaux et industriels, d'une feuille destinée à être soumise à l'action prolongée de la lumière ainsi qu'à la chaleur pendant une durée de plusieurs dizaines de minutes lors de l'élaboration desdits stratifiés, ladite feuille :comportant une impression au moins résistant à la lumière,présentant une première teinte à la lumière d'onde de longueur d'onde comprise entre 400 et 700 nanomètres et une seconde teinte différente de la première à la lumière de longueur d'onde inférieure à 400 nanomètres et supérieure à 700 nanomètres,portant une impression héliographique à l'aide d'encre liquide, l'encre comportant au moins un pigment luminescent résistant à des températures supérieures à 100°C pendant au moins 10 minutes et résistant à une action prolongée de la lumière.
- Utilisation selon la revendication 1, caractérisée par le fait que le pigment est résistant à des températures de 140 à 200°C pendant de 20 à 30 minutes.
- Utilisation selon l'une des revendications 1 et 2, caractérisée par le fait que le pigment est un sulfure de zinc.
- Utilisation selon l'une des revendications 1 à 3, caractérisée par le fait que le pigment contient au moins un sulfure de zinc, un second sulfure métallique et éventuellement au moins un agent d'activation.
- Utilisation selon l'une des revendication 1 à 4, caractérisée par le fait que le pigment est un mélange de sulfure de zinc et de sulfure de cadmium activé par du cuivre.
- Utilisation selon l'une des revendications 1 à 5, caractérisée par le fait que le pigment a une tenue aux rayons ultra-violets supérieure à 5, de préférence 6.
- Utilisation selon l'une des revendications 1 à 6, caractérisée par le fait que le pigment a une taille de particules inférieure à 40 micromètres.
- Utilisation selon l'une des revendications 1 à 7, caractérisée par le fait que ladite feuille est constituée de papier ou de polychlorure de vinyle ou de polyéthylène ou polypropylène, ladite feuille étant éventuellement couchée et éventuellement imprégnée d'une résine thermodurcissable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90401105T ATE93776T1 (de) | 1989-04-26 | 1990-04-25 | Dem licht aussetzbare schicht mit einem erkennungs- und sicherheitszeichen und verwendung einer solchen schicht. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8905541 | 1989-04-26 | ||
FR8905541A FR2646378B1 (fr) | 1989-04-26 | 1989-04-26 | Feuille destinee a etre soumise a l'action de la lumiere, comportant des moyens de reconnaissance et de securite, et application d'une telle feuille |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0395496A2 EP0395496A2 (fr) | 1990-10-31 |
EP0395496A3 EP0395496A3 (fr) | 1991-03-13 |
EP0395496B1 EP0395496B1 (fr) | 1993-09-01 |
EP0395496B2 true EP0395496B2 (fr) | 1998-01-14 |
Family
ID=9381155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90401105A Expired - Lifetime EP0395496B2 (fr) | 1989-04-26 | 1990-04-25 | Feuille destinée à être soumise à l'action de la lumière, comportant des moyens de reconnaissance et de sécurité et application d'une telle feuille |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0395496B2 (fr) |
AT (1) | ATE93776T1 (fr) |
DE (1) | DE69002997T3 (fr) |
ES (1) | ES2045839T5 (fr) |
FR (1) | FR2646378B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6395408B1 (en) | 1996-06-28 | 2002-05-28 | Pioneer Plastics Corporation | Decorative laminate incorporating photoluminescent material |
US20080268228A1 (en) | 2007-04-27 | 2008-10-30 | Panolam Industries International, Inc. | Multi-colored decorative laminate |
DE102008000079A1 (de) | 2008-01-17 | 2009-07-30 | Otger Terhürne, Holzwerk GmbH & Co. | Nachleuchtendes Element eines Belages |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2277169A (en) * | 1938-08-02 | 1942-03-24 | Joseph L Switzer | Press process of making reproduction impresses and product thereof |
US3011978A (en) * | 1959-07-16 | 1961-12-05 | Burroughs Corp | Luminescent printing composition and method of making the same |
DE2656831A1 (de) * | 1976-12-15 | 1978-06-22 | Westag & Getalit Ag | Verfahren zur herstellung einer arbeitsplatte mit oberflaechenmuster |
DE2910176A1 (de) * | 1979-03-15 | 1980-09-25 | Guenter Alt | Verfahren und vorrichtung zur kennzeichnung von druckprodukten |
US4652464A (en) * | 1982-08-23 | 1987-03-24 | Ludlum John P | Printing fine art with fluorescent and non-fluorescent colorants |
GB2147542A (en) * | 1983-10-05 | 1985-05-15 | Fade In Products | Printed articles |
GB8616878D0 (en) * | 1986-07-10 | 1986-08-20 | De La Rue Thomas & Co Ltd | Coating compositions |
-
1989
- 1989-04-26 FR FR8905541A patent/FR2646378B1/fr not_active Expired - Fee Related
-
1990
- 1990-04-25 DE DE69002997T patent/DE69002997T3/de not_active Expired - Fee Related
- 1990-04-25 EP EP90401105A patent/EP0395496B2/fr not_active Expired - Lifetime
- 1990-04-25 ES ES90401105T patent/ES2045839T5/es not_active Expired - Lifetime
- 1990-04-25 AT AT90401105T patent/ATE93776T1/de active
Also Published As
Publication number | Publication date |
---|---|
FR2646378A1 (fr) | 1990-11-02 |
EP0395496A2 (fr) | 1990-10-31 |
DE69002997T2 (de) | 1994-01-20 |
EP0395496A3 (fr) | 1991-03-13 |
DE69002997T3 (de) | 1998-03-26 |
FR2646378B1 (fr) | 1994-11-25 |
ATE93776T1 (de) | 1993-09-15 |
EP0395496B1 (fr) | 1993-09-01 |
ES2045839T5 (es) | 1998-05-16 |
DE69002997D1 (de) | 1993-10-07 |
ES2045839T3 (es) | 1994-01-16 |
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