EP0912916B1 - Procede d'impression d'une couche d'un corps de support portable, notamment carte a memoire, et corps de support imprime selon un tel procede - Google Patents
Procede d'impression d'une couche d'un corps de support portable, notamment carte a memoire, et corps de support imprime selon un tel procede Download PDFInfo
- Publication number
- EP0912916B1 EP0912916B1 EP97928333A EP97928333A EP0912916B1 EP 0912916 B1 EP0912916 B1 EP 0912916B1 EP 97928333 A EP97928333 A EP 97928333A EP 97928333 A EP97928333 A EP 97928333A EP 0912916 B1 EP0912916 B1 EP 0912916B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- state
- mixture
- data medium
- compound
- photochromic
- 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 34
- 150000001875 compounds Chemical class 0.000 claims abstract description 68
- 239000000203 mixture Substances 0.000 claims abstract description 35
- 230000005855 radiation Effects 0.000 claims abstract description 33
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 16
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 16
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000003153 chemical reaction reagent Substances 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000005284 excitation Effects 0.000 claims 1
- 230000008569 process Effects 0.000 description 14
- 238000006116 polymerization reaction Methods 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 11
- 230000009466 transformation Effects 0.000 description 11
- 239000000976 ink Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000000862 absorption spectrum Methods 0.000 description 4
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 229910020366 ClO 4 Inorganic materials 0.000 description 3
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- -1 polyethylene terephthalate Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 238000000935 solvent evaporation Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012764 mineral filler Substances 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- SJJCQDRGABAVBB-UHFFFAOYSA-N 1-hydroxy-2-naphthoic acid Chemical compound C1=CC=CC2=C(O)C(C(=O)O)=CC=C21 SJJCQDRGABAVBB-UHFFFAOYSA-N 0.000 description 1
- CVBUKMMMRLOKQR-UHFFFAOYSA-N 1-phenylbutane-1,3-dione Chemical compound CC(=O)CC(=O)C1=CC=CC=C1 CVBUKMMMRLOKQR-UHFFFAOYSA-N 0.000 description 1
- 208000031968 Cadaver Diseases 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 241000287107 Passer Species 0.000 description 1
- 239000012963 UV stabilizer Substances 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000008371 chromenes Chemical class 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004900 laundering Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- 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
- B41M3/142—Security printing using chemical colour-formers or chemical reactions, e.g. leuco-dye/acid, photochromes
-
- 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
- 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
- B41M5/28—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating
-
- 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
- B41M5/28—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating
- B41M5/282—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating using thermochromic compounds
- B41M5/284—Organic thermochromic compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/56—Processes using photosensitive compositions covered by the groups G03C1/64 - G03C1/72 or agents therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/146—Laser beam
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/163—Radiation-chromic compound
Definitions
- the invention relates to the field of printing and relates more particularly to the impression of a thermoplastic or thermosetting polymerized layer apparent from a portable information carrier body.
- the term printing should be considered, in the present invention, in a broad sense, as being a technique in which one exerts an action on a object so as to leave a visible mark on said object.
- the portable information carrier can be any. However, these include supports standard information in smart card format reference will be made in the description which follows.
- Chip cards and, more generally, cards with memory have a thermoplastic card body or thermosetting formed from one or more layers. Two faces of said body are visible. These faces show a drawing, a logo, a reproduction photographic as well as, very often, written information printed in series according to various known methods.
- Some printing processes involve a simple conventional ink deposit.
- Other processes generally faster and more precise, involve lasers.
- the diameter laser radiation applied to the film (s) must be sufficient so that the inks can be transferred to the surface and / or into the body of card and that, moreover, the colored inks, which were not initially present in the body of card, are likely to diffuse in said body, the definition of the pattern obtained is poor.
- Still other methods offer either a evaporation of particular areas of the surface of the card body, ie foaming of said zones. This evaporation or foaming is induced by heat released from laser radiation. Evaporation leaves a hole and can reveal a colored undercoat of the card body. Foaming changes the nature of surface of the card body which shows for example differences in refractive index causing motives. These processes are generally slow and the definition of the pattern, as well as its contrast, are mediocre. In addition, as before, the surface of the card body does not remain intact.
- bleaching processes offer directed and selective destruction of pigments or other colored molecules contained in a layer of the card body by a laser whose radiation is issued in the visible range. The color appears negatively. Also, to bring up a given color, two laser irradiations are required. For example, to make blue appear on the surface of a black layer of a card body containing both blue, red and yellow, two laser rays locally destroy one, the red pigments, the other, the pigments yellow. If we want to get white, we irradiate the black layer of the map body of three radiations laser of different wavelengths. These processes are slow since obtaining a color in one given point requires several irradiations. Moreover, the white obtained is imperfect since the destruction pigments or colored molecules is never total and, in practice, we see that the colors obtained are pale.
- EP-A-279 600 describes the use of photochromic compounds in the formation of images.
- a problem that the invention proposes to solve is to propose a new process for serial printing of a polymerized thermoplastic or curable layer apparent from a portable information carrier body, which is fast and leaves the surface of said intact layer.
- the compound is irradiated adequate photochromic with unique laser radiation chosen wavelength.
- Chip cards mainly include a micromodule included in a card body.
- the micromodule consists of a circuit chip integrated connected to metal studs forming flush metallizations on the surface of the body card and / or to an antenna embedded in said body. According to that the micromodule is connected to an antenna or to studs, the smart card is said, respectively, to contactless operation or operation with contacts. If the card has two operating methods, it is called hybrid.
- the card body is a rectangular parallelepiped thin whose dimensions, such as defined in particular by standard 7810, are of the order 85 mm long, 54 mm wide and 0.76 mm thick.
- the card body therefore shows six faces including two large parallel and flat faces. he consists of one or more superimposed layers, a layer of said body appearing at each of large faces. These visible layers are printed and show any pattern whether colored or not. They are possibly covered with a protective film transparent.
- the different layers of the card body and, in particular, the visible layers of said body are polymerized thermoplastics or thermosetting or photocuring. They therefore comprise a polymer of a or more monomers. Polymers are for example : acrylonitrile-butadiene-styrene (ABS), polycarbonate (PC), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polymethylmethacrylate (PMMA), or any other derivative polymer of the acrylic or methacrylic system.
- ABS acrylonitrile-butadiene-styrene
- PC polycarbonate
- PET polyethylene terephthalate
- PVC polyvinyl chloride
- PMMA polymethylmethacrylate
- the map body layer (s) are colored white or whitish. This color can be improved by adding, in the body composition of map, of a mineral filler, for example, carbonate calcium or titanium dioxide. Note that the white color is not limiting and that some card body are, before printing, colored or even even transparent in the case of a card body in PMMA for example.
- the printing method of the invention comprises different steps.
- a first step relates to a mixture, preferably in liquid phase, of at least one polymerizable binder, of less a photochromic compound and, advantageously at least one reagent.
- the mixture obtained is liquid, more or less viscous.
- the polymerizable binder is a binder intended for form the polymerized structure or polymer network the apparent layer (s) of the card body and other layers of said body. It includes one or several monomers or oligomers, one or more polymers, a polymerization reagent for said monomers or oligomers, a reagent intended for polymerization or even post-polymerization of polymers, as well as various other compounds or additives, for example a mineral filler intended for card laundering and a solvent.
- Photochromic compounds are compounds likely to undergo a reversible transformation induced by electromagnetic radiation between two states with different absorption spectra.
- a first state is characterized by a first spectrum absorption which includes at least one strip absorption and a second state is characterized by a second absorption spectrum which also includes minus an absorption band.
- photochromic compounds are normally colorless and their absorption spectrum does not belong to the visible domain, i.e. the domain whose wavelengths are between 400 and 780 nm.
- an absorption band of said spectrum is located outside the visible range, in the area of Ultra-Violet, that is to say in the field whose wavelengths are between 20 and 400 nm.
- said strip is located in a range from 200 to 400 nm.
- a radiation electromagnetic whose wavelength is in the aforementioned absorption band is likely to cause a transformation of the photochromic compound, from the first state to the second.
- This transformation can be unimolecular or bimolecular.
- Time to transition from the first state to the second is very short, less than a value of the order of 20 ns., in a example from 40 to 50 ps. for spironaphtooxazines.
- the photochromic compounds In their second state, the photochromic compounds absorb some of the light they receive, since their absorption spectrum includes, in this second state, bands located in the area visible. Said photochromic compounds appear so colorful.
- the transformation is reversible and, since the second state is metastable, a photochromic compound in its second state is likely to transform into its first state more stable.
- said compounds are either photoreversible, either thermoreversible, or photothermoreversible, either multi-photochromic or electrochemical.
- the photochromic compounds used in the context of the invention can simply be dissolved in the solvent of the mixture or advantageously contained in micro-particles or micro-capsules which dissolve in said solvent, thus releasing said compounds into the mixture. They are soluble in the polymerizable binder. To this end, chains, for example hydrophilic, can advantageously be grafted onto said compounds.
- the mixture used according to the invention comprises three different colorless photochromic compounds: a first, a second and a third compound.
- the first compound appears, in its second state, yellow or green
- the second compound appears, in its second state, magenta red
- the third compound appears, in its second state, cyan blue.
- We choose these compounds so that in the mixture the strip absorption of the first compound in its first state sufficiently distinguished from the absorption band of the second compound in its first state, said bands further distinguished enough from the band absorption of the third compound in its first state.
- Photochromic compounds which can advantageously be used in the process of the invention, are bi or polycyclic spirannic compounds having a carbon atom common to two rings: the spirannic atom.
- spirooxazines and spiropyranes and derivative compounds react, under the effect of electromagnetic radiation h, according to the following reaction:
- photochromic compounds can be used. These are, for example, chromenes whose general formulas are of the type:
- the reagent (s) are intended to fix the second colored state and the colored state only of the photochromic compound (s) present in the mixture and only this second colored state.
- these are salts of divalent metals such as Mn 2+ , Ni 2+ , Zn 2+ , Ca 2+ , Pb 2+ , Cd 2+ , Mg 2+ , Co 2+ , Cu 2 + generally associated with a mineral counter ion of the NO 3 - , Cl - , Br - , ClO 4 - type , but also with an organic counter ion such as the 1-hydroxy-2-naphthoate, 2-hydroxybenzoate, 2-hydroxycarbazole anions -1-carboxylate, or alternatively of organometallic complexes such as [Ni, acetylacetone, N, N, N ', N'-tetramethylethylenediamine] ClO 4 , [Ni.acetylacetone.N, N, N', N'-te
- the mixture will however advantageously comprise other compounds.
- additives for example solvents, allowing to separate the spectra, the absorption bands for photochromic compounds present in the mixture so that a laser radiation acts on a photochromic compound given and only on this photochromic compound without possibility of interference.
- the mixture obtained, comprising the compounds photochromic is then, according to the invention, widespread on a support for manufacturing the layer to be printed of the card body.
- This support consists, in a example, of a bottom and lateral sides forming a frame.
- This cavity can contain one or more polymerized or pre-polymerized layers or sublayers of the card body as well as, possibly, a micromodule inserted into said layers or sublayers.
- the mixture spilled on the surface is then irradiated support for manufacturing the layer to be printed by a electromagnetic laser radiation whose length wave belongs to the UV domain and, preferentially, in the domain ranging from 200 to 400 nm, and corresponding to an absorption band of one and one the only photochromic compound present in the mixture, so that said compound changes in the colored form of its second state.
- the power of laser irradiation can be modulated, especially depending on the wavelength, so that, for example, the photochromic response is itself modulated, the colors obtained being of this made nuanced.
- n is an integer
- the mixture has n compounds different photochromics where n is an integer
- n is an integer
- it can be irradiated by n laser radiation, each laser radiation with a given wavelength likely to induce the transformation of one and only one photochromic compound among the n compounds.
- the n photochromic compounds are sensitive respectively and only at the n wavelengths of laser radiation irradiating the support.
- the card body contains three colorless photochromic compounds in their first state and, respectively, green or yellow, magenta red and cyan blue in their second state
- irradiation is carried out by three radiations of wavelength different from the UV range, particular in the aforementioned field ranging from 200 to 400 nm, a first radiation being at the origin of the transformation of the first compound into its green form or yellow, a second radiation being at the origin of the transformation of the second compound into its red form magenta and a third radiation being at the origin of the transformation of the third compound in its form cyan blue.
- the print is then polychromic.
- Irradiation is carried out by radiation laser, successively or simultaneously. She is directed at specific points on the surface of the layer to print, according to the desired pattern. To this end, irradiation is carried out point by point, by a laser beam of determined diameter, or else at through a filter.
- relative displacement laser radiation relative to the layer at print of card body different cases are possible: either the production support for the layer moves relative to the laser radiation which maintain a fixed position, i.e. the radiation laser move relative to said fixed support, ie the manufacturing medium and the laser radiation move at the same time. These displacements are controlled and coordinated by a computer with a suitable software.
- Irradiation takes place before or after a stage pre-polymerization or polymerization of the mixture widespread and / or solvent evaporation, in the case of thermoplastics. Also, depending on the case, the irradiation is carried out on the mixture spilled in a liquid state more or less viscous, or in a solid state pre-polymerized, that is to say partially polymerized, or polymerized.
- polymerization step and / or solvent evaporation was not carried out before irradiation, it is performed after.
- This polymerization can be completed by post-polymerization or post-crosslinking which results in a manufacture of crosslinked, interpenetrated or semi-interpenetrated, from a combination of two types of successive reactions proceeding from mechanisms different.
- Another step in the process of the invention is the irreversibly fixing of the compounds photochromic in their second colored state, of so that the print pattern remains and cannot, in particular, change with the sun.
- the back to the original transparent form is as well stop.
- This fixing is carried out, for example, by the fixing reagent.
- a spirooxazine, spironaphtooxazine is blocked, in its second state, by a metal complex Zn 1/2 CO 2 ROH in the following manner:
- This fixation can be carried out by a reagent.
- very short UVs around 100 nm, allow the destruction of connections.
- the power of UV can be modulated so as to modulate the fixation of the colorless form of photochromic compounds.
- Definitive fixing or blocking of forms colored and non-colored photochromic compounds can be made or improved by polymerization or the post-polymerization of the mixture, for example, due to short UV exposure wave. This UV exposure can also trigger the blocking by fixing reagents without triggering post-polymerization.
- Blocking colored and non-colored shapes can also be simply mechanical, by evaporation of the solvents.
- the printed patterns do not show degradation over time or under the effect of heat or light.
- Post-polymerization can be localized. She will move products and be responsible for a difference in refractive index, the product then appearing in polychromic relief.
- the process of the invention it is possible to print, directly and positively, approximately 20,000 visible layers or map faces per hour, which remain intact after printing.
- the definition of printed patterns is, in theory, molecular. In practice, it is limited, in the case where the irradiation is carried out through a filter, the dimensions of the frame of said filter and, in the case where the irradiation is carried out point by point, at beam dimensions at the surface of the layer irradiated.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Credit Cards Or The Like (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Laminated Bodies (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Description
- de mélange
- d'un liant polymérisable thermoplastique ou durcissable, et
- d'au moins un composé photochromique sensible à un rayonnement laser de longueur d'onde donnée de manière à passer d'un premier état à un second état coloré,
- en vue de former un mélange ;
- d'irradiation du mélange par le rayonnement laser de longueur d'onde donnée ;
- de fixation du second état coloré ; et,
- de polymérisation du mélange de manière à former la couche polymérisée du corps de support.
- un liant polymérisé thermoplastique ou durcissable ; et
- au moins un composé photochromique fixé dans un second état coloré obtenu à partir d'un premier état par irradiation par un rayonnement laser de longueur d'onde donnée.
Claims (13)
- Procédé d'impression d'une couche polymérisée thermoplastique ou durcissable apparente d'un corps de support d'information portable, caractérisé en ce qu'il comporte des étapes suivantes :de mélanged'un liant polymérisable thermoplastique ou durcissable, etd'au moins un composé photochromique sensible à un rayonnement laser de longueur d'onde donnée de manière à passer d'un premier état à un second état coloré, eten vue de former un mélange ;d'irradiation du mélange par le rayonnement laser de longueur d'onde donnée ;de fixation du second état coloré ; et,de polymérisation du mélange de manière à former la couche polymérisée du corps de support.
- Procédé selon la revendication 1, caractérisé en ce que l'étape de mélange comprend le mélange d'un réactif destiné à fixer le second état coloré du composé photochromique, la fixation du second état coloré étant ainsi induite par le réactif.
- Procédé selon la revendication 1, caractérisé en ce que le premier état du composé photochromique est incolore.
- Procédé selon l'une des revendications 1, 2 ou 3, caractérisé en ce que l'étape de mélange s'effectue avec n composés photochromiques différents où n est un nombre entier, et en ce que l'étape d'irradiation s'effectue par irradiation laser à n longueurs d'onde différentes, chaque longueur d'onde étant destinée à faire passer un et un seul composé photochromique d'un premier état à un second état coloré.
- Procédé selon la revendication 4, caractérisé en ce que n est égal à 3 et en ce qu'un premier composé possède un second état coloré vert ou jaune, un second composé possède un second état coloré rouge magenta, et un troisième composé possède un second état coloré bleu cyan.
- Procédé selon l'une des revendications 4 ou 5, caractérisé en ce que l'irradiation des n composés photochromiques par les n rayonnements laser s'effectue de manière simultanée.
- Procédé selon l'une des revendications 4 ou 5, caractérisé en ce que l'irradiation des n composés photochromiques par les n rayonnement laser s'effectue de manière successive.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que le mélange comporte en outre des additifs permettant de séparer les bandes d'excitation des composés photochromiques présents dans le mélange de manière à ce qu'il n'y ait pas d'interférence.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que l'irradiation s'effectue dans le domaine des Ultra-Violets.
- Procédé selon l'une des revendications précédentes, caractérisé en ce qu'il comporte en outre une étape de post-polymérisation.
- Application du procédé selon l'une des revendications précédentes à l'impression de cartes à mémoire, notamment cartes à puce.
- Support d'information portable, comportant une couche polymérisée thermoplastique ou durcissable imprimée apparente d'un corps de support, caractérisé en ce que ladite couche polymérisée comporte :un liant polymérisé thermoplastique ou thermodurcissable ; etau moins un composé photochromique fixé dans un second état coloré obtenu à partir d'un premier état par irradiation par un rayonnement laser de longueur d'onde donnée.
- Support d'information portable selon la revendication 12, caractérisé en ce qu'il constitue une carte à puce, notamment carte à mémoire.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9607240 | 1996-06-11 | ||
FR9607240A FR2749673B1 (fr) | 1996-06-11 | 1996-06-11 | Procede d'impression d'une couche d'un corps de support portable, notamment carte a memoire, et corps de support imprime selon un tel procede |
PCT/FR1997/001044 WO1997048016A1 (fr) | 1996-06-11 | 1997-06-11 | Procede d'impression d'une couche d'un corps de support portable, notamment carte a memoire, et corps de support imprime selon un tel procede |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0912916A1 EP0912916A1 (fr) | 1999-05-06 |
EP0912916B1 true EP0912916B1 (fr) | 2000-03-15 |
Family
ID=9492943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97928333A Expired - Lifetime EP0912916B1 (fr) | 1996-06-11 | 1997-06-11 | Procede d'impression d'une couche d'un corps de support portable, notamment carte a memoire, et corps de support imprime selon un tel procede |
Country Status (13)
Country | Link |
---|---|
US (1) | US6107010A (fr) |
EP (1) | EP0912916B1 (fr) |
JP (1) | JP3416148B2 (fr) |
KR (1) | KR20000016583A (fr) |
CN (1) | CN1179242C (fr) |
AT (1) | ATE190735T1 (fr) |
BR (1) | BR9709705A (fr) |
CA (1) | CA2268786A1 (fr) |
DE (1) | DE69701468T2 (fr) |
ES (1) | ES2147003T3 (fr) |
FR (1) | FR2749673B1 (fr) |
HU (1) | HUP0002137A3 (fr) |
WO (1) | WO1997048016A1 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2764844B1 (fr) | 1997-06-23 | 1999-08-06 | Gemplus Card Int | Reticulation d'encre u.v. |
FR2775099B1 (fr) * | 1998-02-13 | 2000-03-31 | Schlumberger Ind Sa | Procede de fabrication d'une carte a circuit integre |
US6826554B2 (en) * | 1998-06-29 | 2004-11-30 | Fujitsu Limited | System and method for adaptively configuring a shopping display in response to a recognized customer profile |
EP1214202B8 (fr) | 1999-08-30 | 2006-03-08 | ORGA Systems GmbH | Support de donnees sous forme de carte et son procede de production |
DE10048812B4 (de) * | 2000-09-29 | 2005-07-28 | Orga Systems Gmbh | Datenträger mit mittels energiereichem Strahl personalisierbaren Echtheitsmerkmalen |
US6357664B1 (en) | 2001-05-24 | 2002-03-19 | Identicard Systems Incorporated | Identification card utilizing an integrated circuit |
US6358655B1 (en) * | 2001-05-24 | 2002-03-19 | Xerox Corporation | Marking particles |
US6702185B1 (en) | 2002-11-13 | 2004-03-09 | Identicard Systems, Incorporated | Identification device having an integrated circuit |
US7763179B2 (en) | 2003-03-21 | 2010-07-27 | Digimarc Corporation | Color laser engraving and digital watermarking |
US6926405B2 (en) * | 2003-06-06 | 2005-08-09 | Younger Mfg. Co. | Eyewear lens having selective spectral response |
US8110281B2 (en) * | 2004-07-02 | 2012-02-07 | 3Dtl, Inc. | Systems and methods for creating optical effects on media |
FR2891765B1 (fr) | 2005-10-07 | 2008-01-18 | Gemplus Sa | Procede de creation d'une image sur un support |
US8120811B2 (en) | 2007-11-21 | 2012-02-21 | Quad/Graphics, Inc. | System and method for adding data to a printed publication |
EP2240831B1 (fr) | 2008-01-24 | 2015-03-25 | Quad/Graphics, Inc. | Impression a l'aide d'un materiau pouvant changer de couleur |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3615454A (en) * | 1968-06-26 | 1971-10-26 | Du Pont | Process for imaging and fixing radiation-sensitive compositions by sequential irradiation |
GB8703400D0 (en) * | 1987-02-13 | 1987-03-18 | Courtaulds Plc | Security marking |
US5630869A (en) * | 1988-01-12 | 1997-05-20 | Sicipa Holding S.A. | Reversibly photochromic printing inks |
JPH0366024A (ja) * | 1989-08-03 | 1991-03-20 | Tateyama Kagaku Kogyo Kk | 書替可能な記録表示部を有する磁気カードとその書替装置 |
US5364829A (en) * | 1991-08-30 | 1994-11-15 | Matsushita Electric Industrial Co., Ltd. | Rewritable recording medium and a method of recording in the same |
JPH05333462A (ja) * | 1992-06-04 | 1993-12-17 | Tokimec Inc | 像形成装置 |
US5330686A (en) * | 1992-08-19 | 1994-07-19 | Ppg Industries, Inc. | Temperature stable and sunlight protected photochromic articles |
-
1996
- 1996-06-11 FR FR9607240A patent/FR2749673B1/fr not_active Expired - Lifetime
-
1997
- 1997-06-11 JP JP50130398A patent/JP3416148B2/ja not_active Expired - Lifetime
- 1997-06-11 EP EP97928333A patent/EP0912916B1/fr not_active Expired - Lifetime
- 1997-06-11 CN CNB971972273A patent/CN1179242C/zh not_active Expired - Lifetime
- 1997-06-11 ES ES97928333T patent/ES2147003T3/es not_active Expired - Lifetime
- 1997-06-11 BR BR9709705A patent/BR9709705A/pt active Search and Examination
- 1997-06-11 US US09/202,425 patent/US6107010A/en not_active Expired - Lifetime
- 1997-06-11 DE DE69701468T patent/DE69701468T2/de not_active Expired - Lifetime
- 1997-06-11 HU HU0002137A patent/HUP0002137A3/hu unknown
- 1997-06-11 AT AT97928333T patent/ATE190735T1/de not_active IP Right Cessation
- 1997-06-11 CA CA002268786A patent/CA2268786A1/fr not_active Abandoned
- 1997-06-11 KR KR1019980710178A patent/KR20000016583A/ko not_active Application Discontinuation
- 1997-06-11 WO PCT/FR1997/001044 patent/WO1997048016A1/fr not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
FR2749673A1 (fr) | 1997-12-12 |
CA2268786A1 (fr) | 1997-12-18 |
HUP0002137A2 (hu) | 2000-10-28 |
EP0912916A1 (fr) | 1999-05-06 |
WO1997048016A1 (fr) | 1997-12-18 |
BR9709705A (pt) | 1999-08-10 |
HUP0002137A3 (en) | 2003-03-28 |
KR20000016583A (ko) | 2000-03-25 |
ES2147003T3 (es) | 2000-08-16 |
ATE190735T1 (de) | 2000-04-15 |
FR2749673B1 (fr) | 1998-07-31 |
JP2000512033A (ja) | 2000-09-12 |
JP3416148B2 (ja) | 2003-06-16 |
DE69701468D1 (de) | 2000-04-20 |
US6107010A (en) | 2000-08-22 |
CN1179242C (zh) | 2004-12-08 |
CN1227636A (zh) | 1999-09-01 |
DE69701468T2 (de) | 2000-08-10 |
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