• 专利附录
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    • 专利摘要:
    The invention relates to a method for manufacturing a multilayer data carrier (1) in which: - a multilayer data carrier is selected comprising at least one transparent security layer (16) and at least one marking layer (17) , which is sensitive to electromagnetic marking radiation (5), said transparent security layer (16) comprises at least one semi-transparent printed image comprising at least one thermochromic pigment; at least one mark (30) is produced at using said electromagnetic radiation marking, through said printed image, - said semi-transparent printed image appears in a first state, said non-activated state, at least one semi-transparent visible pattern allowing, after said marking step, the displaying said mark (30) through this image, said pattern not being visible in a second state, said activated state. The invention also relates to a support (1) of multilayer data.
    公开号:FR3027845A1
    申请号:FR1460646
    申请日:2014-11-04
    公开日:2016-05-06
    发明作者:Eric Philippe；Laurence Bes
    申请人:Fasver SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a method for manufacturing a multilayer data carrier and a multilayer data carrier.
    [0002] The invention more particularly relates to a multilayer data carrier for protecting a surface portion of an official document bearing inscriptions. The invention also relates to an official document protected using such a multilayer data carrier. Throughout the text, the term "visible light" means any light whose spectral composition is located in the visible spectrum, in wavelengths between 0.4 and 0.8. Throughout the text, the term "semi-transparent image" is understood to mean any image which, when it covers a document or a product, makes it possible to distinguish - in particular from reading - by normal visualization (without a specific instrument) through this image, less under visible light, characters, marks or patterns underlying the document. In particular, a semi-transparent image does not completely mask, at least under visible light, the characters, marks and / or underlying patterns of the document. Throughout the text, the term "inscription" or "inscription to be read" means any sign or pattern made on a layer of a document, which can be read by the human being at least under certain conditions (especially under normal lighting in light). visible and / or under specific lighting and / or after activation of an electronic device (screen) or other ...). It may be variable mentions of personalization of an official document or of common mentions 25 and / or security; texts (manual writing or printed characters); codes (ASCII, universal codes with optoelectronic readings such as barcodes ...); of images or photographs ... We know many devices and processes of security protection of official documents (passports, visas, identity cards, driver's license, gray cards, bank cards, bank checks, diplomas, certificates, titles transportation cards, access control cards, badges, labels, legal documents, contracts, legal registers, cadastral maps, fiduciary documents, banknotes, production plans or other plans ...) bearing inscriptions, including inscriptions to read as variable mentions (surname, first name, address, photo, signature ... of a holder or parties ...) and / or common mentions (security reasons, matrices, frames, names of fields, seals, holograms, signatures, values, ...) to be protected against forgery and / or counterfeit attempts and / or for authentication and / or to guarantee their integrity (ie the fact that they are not have not been altered or modified ed). US 2006/0145469 discloses a document, in particular a counterfeit-proofed check, comprising a first mark formed using a pearlescent effect ink and a second mark formed with a thermochromic ink. The mark formed using a thermochromic ink is opaque and is applied only on a limited portion of the document. The mark formed using a thermochromic ink is visible at ambient temperature and disappears when its temperature is increased, for example by applying a thumb to said mark, the mark reappearing when the temperature returns after withdrawal of the source of heat. Also known from WO 2009/106242 and CA 2 716 892 is a security device comprising at least one layer of thermochromic ink covering and hiding two patterns, the first pattern becoming visible when the thermochromic ink is subjected to a first temperature increase. and the second pattern becoming visible when subjecting the thermochromic ink to a second temperature increase different from the first. The thermochromic ink layer forms an opaque pattern of limited size on the document to be protected. EP 2 499 001 is also known, a multilayer data carrier comprising a radiation-sensitive marking layer outside the visible spectral zone and comprising a hidden marking, and a thermochromic covering layer disposed above the marking layer. opaque below its turning temperature so as to mask said hidden and translucent or transparent marking above its turning temperature so as to make said hidden marking visible. To do this, the thermochromic cover layer according to EP 2 499 001 is in practice necessarily black or at least very dark. The method for preparing a multilayer data carrier according to EP 2 499 001 also limits the choice of thermochromic pigments compatible therewith as well as the choice of laser radiation that can be used. In these known devices, the thermochromic ink-based patterns are opaque at a temperature below the thermochromic activation temperature and become colorless and transparent from and beyond the thermochromic activation temperature. The patterns formed based on thermochromic ink are therefore transparent only in their activated state and do not allow to leave visible printed information on the document to be protected in their non-activated state. In addition, the thermochromic images of such known devices are limited in terms of print fineness and color richness. The aim of the invention is to overcome the disadvantages of the various devices of the state of the art and to propose a method of manufacturing a multilayer data carrier and a multilayer data carrier making it possible to permanently leave inscriptions to be protected. par-20 including appearing on said data carrier or an official document. The invention also aims to propose a method of manufacturing a multilayer data carrier and a multilayer data carrier enabling the realization of a personalized marking during a final step of the manufacturing process of said multilayer data carrier. The invention also aims to propose a method for manufacturing a multilayer data carrier and a multilayer data carrier providing first-level security that can be authenticated by normal visualization, without the need for a specific instrument such as a UV lamp. for example. The invention also aims to propose a method of manufacturing a multilayer data carrier and a multilayer data carrier enabling rapid authentication of a document, in particular of an official document, and without requiring a particular inclination or deformation of the document. The object of the invention is to provide a durable multi-layer data carrier, and in particular having a life of more than 1 year and up to 10 years or more. The invention also aims at providing a multilayer data carrier which can be in the form of a card, in particular a rigid polycarbonate card. To do this, the invention relates to a method for manufacturing a multilayer data carrier in which: a multilayer data carrier is selected comprising at least one security layer and at least one layer, said sensitive marking layer, to an electromagnetic radiation marking, said marking layer being disposed at least in part opposite said security layer, - said security layer comprises at least one printed image comprising at least one thermochromic pigment adapted to change color during a predetermined variation in temperature, at least one mark is made in said marking layer by means of said electromagnetic marking radiation, through said printed image, characterized in that: said printed image is prepared from at least one printing composition comprising at least one transparent binder and a predetermined proportion of pigment s thermochromic adapted to form a semi-transparent printed image allowing the display of said mark through this image in the non-activated state of the thermochromic pigments, - said semi-transparent printed image makes appear (that is to say at least under light in visible light) in a first state, said non-activated state, at at least a first temperature, at least one semitransparent visible pattern allowing, after said marking step, the visualization of said mark through this image, said pattern not being visible in a second state, said activated state, at at least a second temperature different from the first temperature. The invention extends to a multilayer data carrier that can be obtained by a method according to the invention. The invention therefore extends to a multilayer data carrier comprising: at least one security layer comprising at least one printed image comprising at least one thermochromic pigment adapted to change color during a predetermined variation in temperature; at least one layer, referred to as a marking layer, sensitive to electromagnetic radiation for marking comprising at least one mark made with the aid of said electromagnetic marking radiation, said marking layer being arranged at least partly facing said radiation layer; security, characterized in that: - said printed image is prepared from at least one printing composition comprising at least one transparent binder and a predetermined proportion of thermochromic pigments adapted to form a semi-transparent printed image for visualization of said mark through this image in the unactivated state of thermoc pigments hromiques, 20 - said semi-transparent printed image appears (that is to say at least under illumination in visible light) in a first state, said non-activated state, at least a first temperature, at least one visible pattern semitransparent allowing the display of said mark made using electromagnetic radiation marking, said pattern not being visible in a second state, said activated state, at least a second temperature different from the first temperature. The invention also extends to an official document comprising at least one such multilayer data carrier. Surprisingly, the inventors have observed that it is possible to print an image using at least one printing composition comprising thermochromic pigments, and to obtain a semi-transparent and colored printed image. (having a semitransparent visible pattern) in a non-activated state of the thermochromic pigments at at least a first temperature, and completely transparent and colorless (without semi-transparent visible pattern) in an activated state of the thermochromic pigments, at least a second temperature, different from the first temperature. Thus, a multilayer data carrier adapted to be able to cover inscriptions (in particular marks obtained by marking with the aid of a marking radiation such as a laser), for example inscriptions appearing on an official document, without preventing their visibility and / or their reading, at least under 10 lighting in visible light. A method and a multilayer data carrier according to the invention therefore make it possible to improve the security of official documents since they thus make it possible to protect larger surface areas thereof and in particular the surface portions bearing inscriptions to read it is desirable to always allow reading (in the activated state as in the non-activated state). In addition, the inventors have unexpectedly found that it is possible to carry out marking using electromagnetic radiation marking in a layer underlying said security layer, through a such semi-transparent printed image. This makes it possible to further increase the level of security of the official documents since such a mark is disposed within the multilayer data carrier and not directly on the surface thereof. On the other hand, the mark thus formed is still visible through the thermochromic semi-transparent printed image (in the activated state as in the non-activated state of the thermochromic pigments), at least under visible light illumination. A method according to the invention makes it possible, on the other hand, to be able to add at least one additional security element (said mark formed by means of electromagnetic radiation of marking) at an advanced stage of the process for manufacturing an official document. . It should be noted that said mark formed using electromagnetic radiation marking may be formed of variable mentions of personalization of an official document or common mentions and / or security, texts or characters, of images or photographs ... Each mark may extend over at least a portion of the surface of said marking layer and said data medium.
    [0003] In certain possible embodiments of the invention, said transparent security layer may be a layer forming part of an official document, in particular an outer layer thereof, for example when the official document is a card made of synthetic material ( for example a card formed of several superimposed and laminated polycarbonate layers). In these embodiments, said semi-transparent printed image can be printed on such an outer layer of the official document before hot lamination and under pressure of the various layers constituting the official document, or on the contrary after such lamination. The semi-transparent printed image is printed so as to cover inscriptions to be protected carried by an underlying layer of the document. Indeed, the inventors have found that a semi-transparent printed image according to the invention, comprising at least one thermochromic pigment, is compatible with materials such as polycarbonate is allows to prepare cards, and in particular cards including the least one layer comprising polycarbonate. In particular, advantageously and according to the invention, said electromagnetic radiation marking is a laser radiation. It can be any marking laser radiation selected from infrared laser radiation (IR), visible laser radiation and ultraviolet (UV) laser radiation. The frequency and the pumping power of the laser are adapted to allow the realization of the desired mark in the marking layer. Advantageously and according to the invention, the marking layer is chosen so as to be sensitive to the electromagnetic radiation of marking to be used. In particular, advantageously and according to the invention, the marking layer is formed of at least one material adapted to allow the formation of at least one mark (in the form of a pattern or a relief image and / or hollow and / or having a different color or shade of color different from that of the marking layer before the realization of said mark). In particular, advantageously and according to the invention, the marking layer is formed of at least one material sensitive to electromagnetic radiation of marking chosen from metallic materials, polymeric materials, their composites and their mixtures. In particular, advantageously and according to the invention, the marking layer is formed of at least one polymeric material comprising additives such as carbon or metal oxides making it possible to make said material sensitive to electromagnetic radiation for marking. Such additives making it possible to sensitize a marking layer with electromagnetic marking radiation are, for example, chosen from carbon black, graphite, titanium dioxide (TiO 2), Sn (Sb) O 2, anthracene or absorbent dyes. in the infrared spectral range such as perylenes / rylenes, pentaerythritol, hydroxylated copper phosphate, molybdenum disulfide or bismuth oxychloride. It is of course also possible to use a marking layer formed of at least one electromagnetic radiation sensitive polymeric marking material (intrinsically, without the need for sensitization additives). In particular, advantageously and according to the invention, the marking layer and the electromagnetic radiation of marking, in particular the laser radiation, are chosen so that said electromagnetic radiation of marking allows the formation of a mark as defined previously in FIG. the marking layer. For example, it will be necessary to use a marking laser having a radiation in the infrared spectral range in the case where the marking layer comprises only absorbent additives in the infrared spectral range. Advantageously and according to the invention, said marking layer extends in a similar format or smaller than that of the security layer and / or the multilayer data carrier.
    [0004] In the embodiments in which the data carrier is a card formed of several superimposed and laminated polycarbonate layers, the marking step can be carried out before hot and pressure lamination of the various constituent layers of the official document, or on the contrary after such a lamination, the marking being achieved through the semi-transparent printed image of the security layer.
    [0005] In particular, advantageously and according to the invention, the first temperature is lower than the second temperature. In this way, an increase in temperature makes it possible to go from the transparent and colored unactivated state to the transparent and colorless activated state. In particular, advantageously and according to the invention, the thermochromic pigments are chosen so that they have at least one activation temperature of between 20 ° C. and 50 ° C., in particular between 25 ° C. and 45 ° C. . In particular, advantageously and according to the invention, the thermochromic pigments are chosen so that they are in the transparent and colored state (non-activated state) at ambient temperature (in particular at a temperature of between 15 ° C.). C and 35 ° C). It is thus possible, for example, to go from the non-activated state to the activated state by a heating obtained by a simple touch of a finger or the hand on the surface of a printed image according to the invention, and possibly a slight 20 friction of the fingers on the surface of a printed image according to the invention or using a tool having a tip made of elastomeric material (rubber type or rubber-like) The transparent security layer can be formed of the printed image itself using said at least one printing composition or comprising at least one layer formed of any material suitable for printing, on which said semi-transparent image is printed. Advantageously and according to the invention, the transparent security layer - in particular the transparent multilayer data carrier - comprises at least one material chosen from cellulosic materials and polymeric materials. Advantageously and according to the invention, use is made of a security layer comprising at least one layer formed from at least one material selected from the group consisting of transparent thermoplastic materials and transparent synthetic papers. In particular, advantageously and according to the invention, use is made of a security layer comprising at least one layer formed from at least one material chosen from the group consisting of transparent polycarbonates, transparent polyesters, transparent PVC, polyurethane varnishes and vinyl varnishes (or varnishes of polyurethane or vinyl type). In particular, advantageously and according to the invention, the multilayer data carrier is carried by a support film disposed on at least a portion of the surface of an outer layer of said multilayer data carrier. In particular, in the embodiments where the multilayer data carrier is carried by a support film, the multilayer data carrier according to the invention is advantageously a safety device forming a transfer device -particularly a heat transfer device. . Thus, advantageously and according to the invention, the support film carrying the multilayer data carrier is adapted to allow the transfer, in particular the hot transfer, of the multilayer data carrier to said surface portion, by lamination of the safety device on a surface. surface portion of an official document. Advantageously and according to the invention, the multilayer data carrier is transparent and is formed of at least one polymeric material chosen from polycarbonates, polyvinyl chlorides (PVC), polyethylene terephthalate (PET), polyethylene terephthalate glycolized (PETG ), their copolymers and their mixtures. The support film carrying said multilayer data carrier may be formed of any rigid or flexible material, multilayer or not, and be formed of at least one material selected from cellulosic materials and polymeric materials. Advantageously and according to the invention, the support film is formed of at least one cellulosic material chosen from the papers, in particular the security papers. Advantageously and according to the invention, the support film is formed of at least one polymeric material chosen from polycarbonates, polyvinyl chlorides (PVC), polyethylene terephthalate (PET), polyethylene glycol terephthalate (PETG), their copolymers and their mixtures.
    [0006] The assembly formed by said support film and said multilayer data carrier may for example be a transfer film marketed by the company FASVER Baillargues (France) under the reference FasprotekTM or PassprotekTM, or FasfilmTM or TransfilmTm, and / or EP-compliant. 0271941 and US-5232527, the multilayer data carrier comprising at least one semitransparent printed image according to the invention. In addition, advantageously and according to the invention, said semi-transparent image is a colored image. The colored image may for example comprise a single color (monochromatic image) representing a pattern representing an object, characters, inscriptions or a photo, or even simply a solid continuous solid color on the entire surface of the layer transparent security. In particular, advantageously and according to the invention, said semi-transparent image is a polychromatic image.
    [0007] Advantageously and according to the invention, said semi-transparent image is arranged at least partly facing said marking layer. Advantageously and according to the invention, said semitransparent image is printed on said transparent multilayer data carrier, preferably on a face not forming an outer face of the multilayer data carrier, nor of the official document. The semi-transparent image can be printed using any printing technique, for example by screen printing, inkjet or flexography. Particularly advantageously and according to the invention, said semi-transparent image can be printed using a printing technique allowing the realization of very varied patterns, including fine and complex patterns. In particular, it is possible to obtain graphics or texts with a line width of less than 200 μm, especially a line width of less than 100 μm. Thus, advantageously and according to the invention, said semitransparent image is printed with a screen line greater than 80 lines per inch, and in particular with a screen line greater than 120 lines per inch.
    [0008] In particular, advantageously and according to the invention, said semi-transparent image is printed by screen printing, according to the four-color process. Indeed, the inventors have found quite surprisingly that it is possible to print a printing composition comprising thermochromic pigments according to this technique. It is thus possible to prepare a wide variety of semi-transparent images in terms of shapes, size and colors. The four-color printing technique thus makes it possible to reproduce a broad colorimetric spectrum from the following colors: cyan, magenta and yellow and black. Thus, advantageously and according to the invention, said semi-transparent image is printed by successive prints of: a first printing composition comprising cyan-colored thermochromic pigments; a second printing composition comprising pigments; thermochromic magenta, - a third printing composition comprising thermochromic pigments yellow color, and - a fourth printing composition comprising thermochromic pigments black color. The semi-transparent printed image comprises at least one transparent binder adapted to not interfere with the visualization of the inscriptions carried by the official document to be protected. Advantageously and according to the invention, said transparent binder is chosen from the group consisting of transparent polymeric binders. Advantageously and according to the invention, the transparent binder is chosen from the group formed by transparent thermoplastic resins. In particular, advantageously and according to the invention, said transparent binder is selected from the group consisting of polymeric materials such as polycarbonates, polyesters, polyacrylates, polyacrylics, in particular polymethacrylates, polyurethanes, polyethers, polycaprolactones, their mixtures and their copolymers. The binder is for example a methyl methacrylate copolymer such as a resin sold by DOW CHEMICAL (Midland, USA) under the reference Paraloid B®. Advantageously and according to the invention, said semi-transparent image is printed using at least one printing composition 5 (ink) comprising thermochromic pigments and at least one transparent binder. Advantageously and according to the invention, said semi-transparent image is printed using at least one printing composition comprising thermochromic pigments chosen from the group consisting of capsules (microcapsules) comprising at least one leuco- dye (also called "color developer"), at least one weak acid and at least one organic liquid (as a solvent). The thermochromic pigments therefore comprise, within each microcapsule, a coloring composition comprising at least one leuco dye, at least one weak acid and at least one organic liquid. Such thermochromic pigments are known and are for example sold by Polychrom CO LTD (Ansan City, Korea). They have, for example, an average size of between 1 and 100 microns, especially between 2 and 60 microns. The proportion of thermochromic pigments in the printing composition is chosen so as to obtain a semi-transparent image, and thus to allow the visualization of the inscriptions printed on said official document through the semi-transparent image, at least under illumination. in visible light. Advantageously and according to the invention, said semi-transparent image is printed using at least one printing composition comprising between 9% and 22% by weight of thermochromic pigments. The cyan color can be obtained by a mixture of a green dye and a blue dye, for example 444,4'-bis (dimethylamino) benzhydrylidene chloride [cyclohexa-2,5-di-1-ilidene] dimethylammonium (called "Crystal Violet Lactone") for the blue color and 3-diethylamino-7-dibenzylaminofluoran for the green color.
    [0009] The magenta color can be obtained by a mixture of a red dye and a blue dye. For the red color several molecules can be used such as 3,3-bis (1-octyl-2-methyl-indol-3-yl) phthalide, 6 'ethyl (p-tolyl) amino-2' -methylspiro [isobenzofuran] -1 (3H), 949H] xanthen-3-one, spiro [12H-benzo [a] xanthene-12 or else 1 (3 'H) -isobenzofuran-3'-one, 9-ethyl (3- methylbutyl) amino]. For the yellow color, for example, benzenamine, N, N-dimethyl-4- [2- [2- (octyloxy) phenyl] -phenyl-4-pyridinyl] may be used.
    [0010] The weak acid is, for example, chosen from bisphenol A or bisphenol S type acids. The solvent contained in the thermochromic pigment microcapsules is generally a polar solvent such as an alcohol or an ester. The polymeric shell of each microcapsule is, for example, formed of an encapsulating polymer such as melamine formaldehyde. The printing composition may further comprise at least one solvent, for example an aqueous or organic solvent. Advantageously and according to the invention, the solvent is, for example, dipropylene glycol monomethyl ether and / or ethyl 3-ethoxypropanoate. Advantageously and according to the invention, a suitable solvent is chosen to allow the printing of a semi-transparent image of a device according to the invention. In particular, advantageously and according to the invention, said solvent is chosen so that it is compatible with the thermochromic pigments of the printing composition used, that is to say which is not likely to damaging the polymeric microcapsules of said thermochromic pigments or disturbing the coloring composition included in the microcapsules of said thermochromic pigments (leuco-dye system and weak acid). Advantageously and according to the invention, each printing composition 30 thus comprises: between 9% and 22% by weight of thermochromic capsules, between 30% and 45% by weight of transparent binder, between 25% and 50% by weight; weight of solvent. Advantageously and according to the invention, said multilayer data carrier is applied to a surface portion of an official document comprising inscriptions so that the semitransparent image covers at least part of said inscriptions. We then obtain large and transparent protection devices to view the inscriptions printed on the official document. Advantageously and according to the invention, said semi-transparent image extends in a format similar to that of the transparent multilayer data carrier. Indeed, large-sized multilayer data carriers are more difficult to falsify, and in particular to reproduce. In addition, large multilayer data carriers are also more difficult to remove and reuse on another document. A method and a multilayer data carrier according to the invention thus make it possible to prepare large protective devices without preventing the display of the inscriptions to be read printed on the official document. On the other hand, it is possible to print other types of safe ink on the surface of the official document and / or on and / or in the multilayer data carrier or to add any other safety protection device so to further strengthen its protection. It may for example be at least one inscription formed of a security ink composition selected from the group consisting of photoluminescent inks - especially in ultraviolet light -, fluorescent inks, photochromic inks, iridescent inks, interferential pigment inks, soluble dye inks, and soluble binder inks. Advantageously and according to the invention, the official document and / or the multilayer data carrier may also comprise at least one security marking, in particular chosen from the group of holographic marks and metallized marks (that is to say formed from at least one printing of an ink producing a metallic effect and / or incorporating metal particles and / or a metal layer).
    [0011] It is possible to apply a layer of additional protective varnish to the free surface of the last layer of thermochromic printing composition of the transparent security layer, so as to protect the semi-transparent image of the multilayer data carrier as well as got.
    [0012] However, the application of such a protective varnish is not essential. It is also possible to apply a layer of adhesive above the transparent multilayer data carrier (on the free surface of the last layer of thermochromic printing composition or on the possible layer of protective varnish), in order to allow the transfer of the protective device and the attachment thereof to an official document to be protected. Furthermore, although it is not essential to add anti-UV additives, HALS ("Hindered Amine Light Stabilizers") or antioxidants additives in the thermochromic printing composition, it is not necessary to add however, they are selected to be compatible with use in the thermochromic printing composition. Furthermore, to improve the compatibility between said at least one thermochromic printing composition and the transparent multilayer data carrier, it is possible to choose the binder and / or transparent multilayer data carrier so that they are mainly formed at least one polymeric material. The invention extends to an official document comprising at least one data carrier according to the invention. An official document according to the invention may in particular be chosen from the group consisting of passports, passport sheets, customs cards, visas, identity cards, driving licenses, vehicle registration cards ( gray cards), bank cards, loyalty cards, bank checks, diplomas, certificates, tickets, access control cards, badges, labels, legal documents, contracts, legal registers, cadastral plans, fiduciary documents, bank notes, packaging and manufacturing plans.
    [0013] The invention also relates to a method and a multilayer data medium and an official document characterized in combination by all or some of the characteristics mentioned above or below. Other objects, features and advantages of the invention appear on reading the following description of one of its preferred embodiments given by way of non-limiting example, and which refers to the appended figures in which: FIGS. 1 and 2 are diagrammatic sectional views of a multilayer data carrier according to a first embodiment according to the invention illustrating a method of manufacturing such a data carrier, FIG. 3 is a diagrammatic view. of an official document comprising a multilayer data carrier according to the invention, the semi-transparent image being visible; FIG. 4 is a schematic view of an official document comprising a multilayer data carrier according to the invention, the semi-transparent image not being visible, - Figures 5 and 6 are schematic sectional views of a multilayer data carrier according to a second embodiment of the invention illustrating a method of manufacturing such a data carrier. In Figures 1 to 6, the ladders are not respected for purposes of illustration. In particular, in Figures 1, 2, 5 and 6, the thicknesses are exaggeratedly enlarged. A transparent multilayer data carrier 1 incorporating a thermochromic polychromatic semi-transparent image is made. The multilayer data carrier 1 comprises at least one transparent security layer 16 comprising the semitransparent image and at least one layer, called the marking layer 17, which is sensitive to an electromagnetic radiation of marking, said marking layer being arranged at least in part opposite said security layer 16. The multilayer data carrier 1 is carried by a support film 18.
    [0014] This transparent multilayer data carrier 1 may constitute a hot transfer, that is to say may be used to be applied and transferred by hot lamination to a surface portion of an official document 22, as shown in FIGS. 2 and 3, in particular to protect it against falsification and / or to authenticate the official document and / or variable or common inscriptions previously printed on this surface portion and / or to guarantee its integrity. In a first step of a method for manufacturing the multilayer data carrier (FIGS. 1 and 5), said semi-transparent image is prepared. At least one printing composition (or thermochromic ink) is prepared. Each printing composition comprises: between 9% and 22% by weight of thermochromic pigments, between 30% and 45% by weight of at least one transparent binder, such as a thermoplastic resin, in particular an acrylic thermoplastic resin, between 25% and 50% by weight of solvent such as dipropylene glycol monomethyl ether or ethyl 3-ethoxypropanoate. The thermochromic microcapsules comprise at least one leuco dye (also called "color developer"), at least one weak acid and at least one organic liquid (such as a fatty acid ester). Leuco-dyes are molecules that can take two different forms: a colored form and a colorless form. Each thermochromic ink may also include any type of additive (especially less than 5% by weight based on the total weight of the thermochromic ink). For example, anti-UV additives such as benzotriazole of hydroxyphenyl (BTZ) or 2-hydroxyphenyl-s-triazine (HDT) can be added. From an image or photograph treated in subtractive synthesis, four films or raster negatives corresponding to the four primary colors (yellow, magenta, cyan, black) are obtained. The image is reproduced by successively printing the four filters of the image with the primary colors cyan, magenta, yellow and black. On a support 1 of multilayer data are printed successively for example by screen printing the four monochromatic filtered images. A lacquer separating layer (not shown) may optionally be provided between each monochromatic filtered image. In a first embodiment illustrated in FIGS. 1 and 2, the multilayer data support 1 is carried by a transparent support film 18 formed for example of polystyrene. The multilayer data carrier 1 may be transparent or semi-transparent. It comprises a marking layer 17 formed for example of a continuous layer of polyurethane comprising additives to make it sensitive to laser marking. The assembly formed by the marking layer 17 and the transparent support film 18 may for example be a Fasprotek ™ or Transfilm ™ type film (FAS VER, Baillargues, France) made susceptible to laser marking using carbon black, Sn (Sb) 02 or titanium dioxide. Alternatively, the multilayer data carrier 1 may also comprise a marking layer 17 formed of a single layer (not supported by a support) formed, for example, of a film of the FasfilmTM type 20 (FASVER, Baillargues, France). In this case, the continuous layer is for example formed of polyethylene terephthalate or polycarbonate sensitive to laser radiation. The continuous layer forms a marking layer 17 sensitive to a marking radiation such as a marking laser. Further, in the latter case, the adhesive layer 10 is not necessary to enable the hot rolling transfer of the multilayer data carrier 1 to a surface portion of an official document. Each multilayer data carrier 1 may comprise a single layer of separable varnish. Each multilayer data carrier 1 may incorporate security patterns 15b, 15c printed on and / or under the separable varnish layer for example. These safety patterns 15b, 15c may for example be formed of patterns visible only under certain lighting conditions (WO 0024587, FR 2834484), patterns whose appearance varies according to the viewing angle, iridescent patterns, patterns. with interferential pigments ... In four-color process four thermochromic compositions are thus prepared. The first cyan-colored thermochromic composition is printed using and reproducing respectively the monochromatic filtered image (obtained with the cyan filter), so as to form a first semi-transparent thermochromic monochromatic image. The second magenta thermochromic composition 13 is then printed above using and reproducing respectively the monochromatic filtered image (obtained with the magenta filter). The third yellow thermochromic composition 12 is then printed above using and reproducing respectively the monochromatic filtered image (obtained with the yellow filter). The fourth black-colored thermochromic composition 11 is then printed above using and reproducing respectively the monochromatic filtered image (obtained with the black filter). Drying can be provided between the printing of each thermochromic composition, at room temperature or for example by means of a hot air flow. A layer of adhesive is then printed on the last layer of the semi-transparent image thus printed. This layer of adhesive allows the transfer of the multilayer data carrier 1 and the attachment thereof to an official document. A protective film (not shown) can also be added to the adhesive layer. In a second embodiment according to the invention shown in FIGS. 5 and 6, the data carrier 1 is in the general form of a sheet or a card and therefore has two opposite main plane faces, and a relatively low thickness. In the following, only a main face, called the external face, is shown and described and has the characteristics of the invention, it being understood that the other external main face may equally well have the same characteristics, or on the contrary present other characteristics. Consequently, it is assumed in the following that the face opposite to the external face considered is an external main face of a bottom 9, without this implying any limitation, such a bottom may not be present and / or being itself constituted of a layer or a plurality of layers more or less thick (s) not described in this description.
    [0015] In particular the bottom 9 may be formed of at least one layer of thermoplastic material chosen from polycarbonates, PVCs, polyesters (PET polyethylene terephthalate, polyethylene terephthalate glycol PETG), coextruded polyester and polycarbonate films (PEC ), synthetic papers (especially chosen from fiduciary papers and paper marketed under the trademark Teslin® by the company PPG, Monroeville, USA, paper marketed under the trademark Neobond® by the company Neenah Lahnstein, Lahnstein, Germany, and the paper sold under the trademark Polyart® by Arjobex, Boulogne, France). Other examples are possible. In this second embodiment of a preparation method and a multilayer data carrier according to the invention, said semi-transparent image is prepared as in the first embodiment described above but is printed on a sheet 8 formed for example of polycarbonate (transparent and not sensitive to laser radiation). Once said semi-transparent image printed on the sheet 8, said sheet is returned and deposited on a set of sheets comprising at least one marking layer 17 and a white background 9. As can be seen in FIG. 5, the face of the sheet 8 on which said semi-transparent image has been printed is disposed in contact with the marking layer 17. FIG. 5 shows the data support obtained after hot lamination under pressure of these different layers.
    [0016] In a third embodiment of a method of preparation and a multilayer data carrier according to the invention (not shown), the data carrier may be similar to that of the first embodiment but in which the arrangement of the security layer 16 and the marking layer 17 is inverted, the marking layer 17 then being placed in contact with the adhesive 10. In this embodiment, the second marking step will be carried out after transfer of the data carrier on a another document, for example a sheet of paper, marking with laser marking radiation being made through said semi-transparent image so as to produce a mark 30 within the marking layer 17. In a second step of a method of manufacturing the multilayer data carrier (FIGS. 2 and 6), in the first embodiment and in the second embodiment, marking is carried out using laser radiation. marking through said semi-transparent image so as to produce a mark 30 within the marking layer 17. In the first embodiment, a detachment layer may optionally be provided between the transparent multilayer data carrier 1 and the transparent support film 18, so as to facilitate the removal of the transparent support film 18, once the protection device has been transferred. on a substrate such as an official document. A transparent multilayer data carrier 1 is thus obtained comprising a polychromatic semitransparent printed image and a laser generated mark 30 (shown in FIG. 2). Then, if it is provided, the protective film is removed and the data carrier 1 is applied to the official document. The transfer can be carried out by lamination at around 100 ° C. to 120 ° C. for 5 seconds on an official document 22. FIGS. 3 and 4 represent an official document 22 (for example an identity card) on which transferred the data carrier 1 as previously prepared in FIGS. 1 and 3. The official document 22 has entries, including variable mentions such as identity data. The inscriptions appearing on the official document 22 are preferably black and in particular of color (or shade) different from the colors of the patterns of the semi-transparent image covering them, so that it is easily distinguishable from the naked eye (under visible light).
    [0017] In the non-activated state shown in FIG. 3, the semi-transparent polychromatic image is visible and allows the display of the inscriptions through this image. After a slight heating in contact with the fingers or the hand, 5 one goes to the activated state shown in FIG. 4, and the semi-transparent polychromatic image is no longer visible (colorless), the visualization of the inscriptions through this image is always possible. The mark 30 is visible in the non-activated state and in the activated state and is not obscured by the semitransparent polychromatic image as can be seen in FIGS. 3 and 4. It should be noted that in FIG. As shown diagrammatically in FIGS. 3 and 4, the patterns are represented with simple geometric shapes. Nevertheless, the invention makes it possible to produce high definition patterns, with very complex and very fine shapes. EXAMPLE 1 Four thermochromic inks were prepared each comprising: 14 to 20% by weight of thermochromic pigments, 40 to 46% by weight of methyl methacrylate copolymer as transparent binder, and 26% by weight by weight of dipropylene glycol monomethyl ether, - 10% of ethyl 3-ethoxypropanoate, - 4% by weight of 2-hydroxyphenyl-s-triazine (anti-UV additive). Each thermochromic ink has a viscosity of about 7 Pa.s. The thermochromic capsules of the first thermochromic ink, to obtain the cyan color, are formed from a mixture of green and blue thermochromic capsules in a proportion of about 50% -50%. For the blue color, the leuco dye contained in the microcapsules 30 is the "Crystal Violet Lactone" and for the green color the leuco dye contained in the microcapsules is 3-diethylamino-7-dibenzylaminofluoran. The first thermochromic ink comprises a total of 20% by weight of thermochromic capsules. The thermochromic capsules of the second thermochromic ink to obtain the magenta color are formed from a mixture of red and blue thermochromic capsules in a proportion of about 50% - 50%. The second thermochromic ink comprises a total of 16% by weight of thermochromic capsules. The thermochromic capsules of the third thermochromic ink are thermochromic capsules of yellow color. The third thermochromic ink comprises 20% by weight of thermochromic capsules. The thermochromic capsules of the fourth thermochromic ink are black thermochromic capsules. The fourth thermochromic ink comprises 14% by weight of thermochromic capsules. These thermochromic capsules are marketed by Gem'innov® (Gémenos, France) and can be activated at the activation temperature of + 30 ° C. The thermochromic capsules have an average size of 10. The organic liquid contained in the thermochromic capsules is a fatty acid ester. From an image or photograph treated in subtractive synthesis, four films or raster negatives corresponding to the four primary colors (yellow, magenta, cyan, black) are obtained. The image is reproduced by successively printing the four filters of the image with the four primary colors cyan, magenta, yellow and black. The four monochromatic filtered images are printed successively by screen printing on the free face of a transparent multilayer data carrier carried by a support film (film sold under the trademark FASPROTEK® by the company Fasver (Baillargues, France) comprising at least one layer marking made sensitive to laser marking using carbon black, Sn (Sb) O 2 or titanium dioxide Each screen is made from a fabric whose mesh comprises of the order of 150 son / cm, each wire having a diameter of 31. The first cyan thermochromic ink, the second magenta thermochromic ink, the third yellow thermochromic ink and the fourth black thermochromic ink using and reproducing respectively the monochromatic filtered image obtained with each filter.After printing each thermochromic ink one Dry with a continuous stream of air at 70 ° C for lmin50s. An adhesive layer is then printed on the fourth black thermochromic ink. The transparent multilayer data carrier is then applied to an official document (passport page) by hot rolling. After hot rolling, a marking with infrared laser marking laser is carried out through said semi-transparent image so as to produce a laser mark within the marking layer disposed between the semi-transparent image. -Transparent and the support film of said data medium. A marking laser (Nd: YAG - 1064 nm) of the DPSS ("Diode Pulsed Solid State") type sold by IXLA under the reference 20 XP24® (desktop model) is used with standard settings (speed: 1000 mm). / s, frequency: 20 kHz) to make a photo of a female face in binary, black and white (or "bitmap"). The laser radiation is substantially perpendicular to the outer surface of the data carrier and is disposed on the data carrier side where the thermochromic semitransparent image is located, opposite the support film. The security layer comprising the semi-transparent printed image is traversed by the infrared laser radiation and allows the realization of a laser mark in the underlying marking layer. A transparent multilayer data carrier is thus obtained comprising a semitransparent printed image and a mark obtained by laser marking disposed under said semi-transparent printed image, said semi-transparent printed image making it possible to visualize the mark obtained by laser engraving (at the activated state as in the non activated state of the thermochromic pigments). The semi-transparent image thus arranged on the official document is polychromatic at room temperature (of the order of 18 to 25 ° C) which does not prevent the reading of the inscriptions appearing on the official document, and becomes invisible ( because colorless) from 30 ° C, when touching the semi-transparent image with the fingers or the hand for example. The image then becomes spontaneously polychromatic in a few seconds. In addition, with the multilayer data carrier of the above-mentioned example applied to an official document, the following light-fastness tests are carried out: - resistance to artificial light measured according to ISO 24789-1 and ISO standards 24789-2: specimens were irradiated with a xenon arc lamp for 24 hours in the presence of the light filter and the temperature of the black panel was 50 ° C .; - Resistance to artificial light measured according to the method defined by the International Civil Aviation Organization (ICAO) concerning the sustainability of passports (version: 3.2 dated 30 August 2006, paragraph 5.14): samples are submitted to radiation of an air-cooled xenon arc lamp 20 in the presence of a radiation filter of wavelengths less than 310 nm; ultraviolet resistance A measured according to the standards ISO 4582 and DIN 6167: the samples are placed at 60 ° C. for 20 hours and at 0.72 W.m-2.nm-1. After each test, the color difference (before and after the test) is recorded in the unactivated colored state of the protective device. The color difference is measured according to ISO 7724-3 using a DR LANGE® spectrophotometer (Düsseldorf, Germany). The color deviations (delta E) thus measured in each of the above light resistance tests are all less than 5, that is to say less than the threshold for which the human eye perceives a difference in color. Similarly, with regard to the climatic behavior of the multilayer data carrier of the example mentioned above applied to an official document, the following tests are carried out: - climatic resistance measured according to standards NF T 76-109 and DIN 6167: subject samples with 7 cycles of climatic aging of 12 hours each (ie 84 hours in total) under the following conditions: 70 ° C for 5 hours, cooling down to -40 ° C in 1 hour, -40 ° C for 5 hours then rise in temperature up to 70 ° C, relative humidity of 90%; - climatic resistance measured according to the method defined by the International Civil Aviation Organization (ICAO) concerning the sustainability of passports (version 3.2 dated 30 August 2006, paragraph 5.2): samples are submitted to 7 cycles of climatic aging under the following conditions: 77 ° C for 15 minutes, passage in less than 60 seconds at -32 ° C and hold at -32 ° C for 15 minutes; - climatic resistance measured according to the method defined by the International Civil Aviation Organization (ICAO) concerning the sustainability of passports (version 3.2 dated 30 August 2006, paragraph 5.3): the samples are subjected to a temperature of 77 ° C for 168 hours in the presence of a relative humidity of 50%; - climatic resistance measured according to ISO 24789-1 and ISO 24789-2, paragraph 5.7 (50 ° C, 93% relative humidity), paragraph 5.8 (-35 ° C for 15 min, change to less than 15 at 50 ° C and hold at 50 ° C for 15 min) and paragraph 5.9 (-35 ° C for 30 min, + 50 ° C and 20% relative humidity for 6.5 h, -35 ° C for 30 min, then, + 50 ° C. and 85% relative humidity for 6.5 h). After each climatic behavior test, the color difference (before and after the test) is noted in the colored unactivated state of the multilayer data carrier. The color difference is measured according to ISO 7724-3 using a DR LANGE® spectro-colorimeter (Düsseldorf, Germany). The color deviations (delta E) thus measured in each of the above light resistance tests are all less than 5, that is to say less than the threshold for which the human eye perceives a difference in color. The thermochromic properties of the multilayer data carrier have not been affected.
    [0018] EXAMPLE 2 In this example, polychromatic semitransparent images are applied to an official document bearing inscriptions as indicated in Example 1, but by varying the level of pigments in each of the four thermochromic inks. It can be seen that below a certain level of pigments the thermochromic semi-transparent image is no longer visible. Above a certain amount of pigments, the thermochromic semi-transparent image prevents the visualization of the inscriptions on the official document.
    [0019] The table below describes the results obtained. Proportion of Proportion of binder Proportion of solvent Proportion of additive Visual appearance pigment (%) (%) (%) thermochromic (%) 27 36.5 33.5 3 underlying inscriptions not visible 20 40 36 4 underlying inscriptions visible - Example 1 14.9 42.5 39.1 3.4 visible underlayments 9.5 45.2 41.7 3.6 visible underlyings 6.5 46.7 43.1 3.7 semi-transparent thermochromic image no EXAMPLE 3: A polycarbonate film (non-sensitive to laser radiation) containing a thermochromic layer of blue color and an activation temperature of 36 ° C. is placed on a laser-sensitive film marketed by BAYER MATERIALS SCIENCE under the reference MAKROFOL ID ® (including carbon black). A thermochromic ink is prepared comprising: - 10% by weight of thermochromic pigments (capsules), - 46% by weight of methyl methacrylate copolymer as transparent binder, and - 29% by weight of dipropylene glycol monomethyl ether, 11% of ethyl 3-ethoxypropanoate, 4% by weight of 2-hydroxyphenyl-s-triazine (anti-UV additive). The thermochromic ink has a viscosity of the order of 7 Pa.s. The leuco dye contained in the thermochromic microcapsules is the "Crystal Violet Lactone". These thermochromic capsules are marketed by Gem'innov® (Gémenos, France). The thermochromic capsules have an average size of 10. The organic liquid contained in the thermochromic capsules is a fatty acid ester. The thermochromic layer therefore comprises a semi-transparent thermochromic image below the activation temperature and transparent beyond the activation temperature. The polycarbonate (non-laser sensitive) film containing the semi-transparent thermochromic image disposed on a film comprising a laser marking layer is hot rolled and pressurized with other polycarbonate layers. A marking laser (Nd: YAG - 1064 nm) of the DPSS ("Diode Pulsed Solid State") type sold by IXLA under the reference XP24® (desktop model) is used with standard settings (speed: 1000 mm / s frequency: 20 kHz) to make a photo of a binary, black and white female face (or "bitmap") through the semi-transparent thermochromic image and within the laser marking layer. A transparent multilayer data carrier is obtained comprising a blue semi-transparent printed image and a black mark representing a laser-marked face disposed under said semi-transparent printed image, said semi-transparent printed image permitting to visualize the mark obtained by laser etching (in activated and non-activated state of thermochromic pigments). EXAMPLE 4 A multilayer data carrier is produced according to Example 3, replacing the blue thermochromic capsules with pink thermochromic capsules marketed by Gem'innov® (Gémenos, France). The thermochromic ink comprises 20% by weight of thermochromic capsules of pink color. A transparent multilayer data carrier is obtained comprising a pink semi-transparent printed image and a black mark representing a laser-marked face disposed under said semi-transparent printed image, said semi-transparent printed image making it possible to visualize the mark obtained by etching. laser (activated and non-activated state of thermochromic pigments).
    [0020] EXAMPLE 5 A multilayer data carrier is produced according to Example 3, replacing the blue thermochromic capsules with red thermochromic capsules marketed by Gem'innov® (Gémenos, France). The thermochromic ink comprises 16% by weight of red thermochromic capsules. A transparent multilayer data carrier is obtained comprising a red semi-transparent printed image and a black mark representing a laser-marked face disposed under said semi-transparent printed image, said semi-transparent printed image making it possible to visualize the mark obtained by etching. laser (activated and non-activated state of thermochromic pigments). EXAMPLE 6 A multilayer data carrier is made according to Example 3 using an ultraviolet marking laser in place of an infrared laser.
    [0021] A UV marking laser (Nd: YV04 - 355 nm) of the DPSS ("Diode Pulsed Solid State") type sold by TRUMPH under the reference TRUMARK 6330® is used with standard settings (speed: 1000 mm, frequency: 20 kHz). to make a photo of a female face in binary, black and white (or "bitmap") through the semi-transparent thermochromic image. A transparent multilayer data carrier is obtained comprising a blue semi-transparent printed image and a black mark representing a laser-marked face disposed under said semi-transparent printed image, said semi-transparent printed image allowing to visualize the mark obtained by etching. laser (activated and non-activated state of thermochromic pigments). All these examples show that it is possible to carry out a laser marking with a wavelength ranging from the spectral range of the ultraviolet to the spectral range of the infrared, through a semitransparent image according to the invention. The invention can be the subject of many variants. In particular, it is possible to use colorless thermochromic pigments at a temperature below their activation temperature and stained at a temperature above their activation temperature. In addition, the thermochromic semi-transparent printed image may be formed on one side of a transparent layer of the official document itself, the multilayer data carrier according to the invention being formed of this transparent layer carrying this semi-transparent printed image. thermochromic and a marking layer 25 according to the invention.
    权利要求:
    Claims (3)
    [0001]
    CLAIMS1 / - A method of manufacturing a multilayer data carrier (1) in which: - a multilayer data carrier is selected comprising at least one layer (16) of security and at least one layer, said layer (17) marking , which is sensitive to an electromagnetic marking radiation (5), said marking layer being arranged at least partly facing said security layer (16), said security layer (16) comprises at least one printed image comprising at least one less a thermochromic pigment adapted to change color during a predetermined variation of temperature, - is carried out, in said layer (17) of marking, at least one mark (30) using said electromagnetic radiation marking, through of said printed image, characterized in that: - said printed image is prepared from at least one printing composition comprising at least one transparent binder and a predetermined proportion e thermochromic pigments adapted to form a semi-transparent printed image allowing the display of said mark through this image in the non-activated state thermochromic pigments, - said semi-transparent printed image appears in a first state, said state not activated, at least a first temperature, at least one semitransparent visible pattern allowing, after said marking step, the display of said mark (30) through this image, said pattern not being visible in a second state, said activated state, at least a second temperature different from the first temperature.
    [0002]
    2 / - The method of claim 1, characterized in that said electromagnetic radiation marking is laser radiation.
    [0003]
    3 / - Method according to one of claims 1 or 2, characterized in that said semi-transparent image is a colored image, and in particular a polychromatic image.4 / - Method according to one of claims 1 to 3, characterized in that said semi-transparent image is printed according to the four-color process. 5 / - Method according to one of claims 1 to 4, characterized in that said semi-transparent image is printed with a screen line greater than 80 lines per inch. 6 / - Method according to one of claims 1 to 5, characterized in that said transparent binder is selected from the group consisting of transparent polymeric binders. 7 / - Method according to one of claims 1 to 6, characterized in that said semi-transparent image is printed using at least one printing composition comprising at least one thermochromic pigment chosen from the group formed capsules comprising at least one leuco dye, at least one weak acid and at least one solvent. 8 / - Method according to one of claims 1 to 7, characterized in that said semi-transparent image is printed using at least one printing composition comprising between 9% and 22% by weight of pigments thermochromic. 9 / - Method according to one of claims 1 to 8, characterized in that said semi-transparent image is printed by successive printing: - a first printing composition comprising at least one cyan thermochromic pigment, - a second printing composition comprising at least one magenta thermochromic pigment, a third printing composition comprising at least one yellow thermochromic pigment, and a fourth printing composition comprising at least one minus a thermochromic pigment of black color. 10 / - Method according to one of claims 1 to 9, characterized in that a security layer comprising at least one layer formed of at least one material selected from the group consisting of transparent thermoplastic materials and synthetic papers is used transparent. 11 / - Method according to one of claims 1 to 10, characterized in that a security layer comprising at least one layer formed of at least one material selected from the group consisting of transparent polycarbonates, transparent polyesters, transparent PVC, polyurethane varnishes and vinyl varnishes. 12 / - Support (1) for multilayer data comprising: - at least one security layer (16) comprising at least one printed image comprising at least one thermochromic pigment adapted to change color during a predetermined variation in temperature; at least one layer, said marking layer (17), sensitive to electromagnetic radiation marking comprising at least one mark (30) made using said electromagnetic radiation marking, said marking layer being arranged at least in part facing said security layer (16), characterized in that: - said printed image is prepared from at least one printing composition comprising at least one transparent binder and a predetermined proportion of thermochromic pigments adapted to form a semi-transparent printed image allowing the display of said mark through this non-activated image of the thermochemical pigments romiques, - said semi-transparent printed image makes appear in a first state, said non-activated state, at least a first temperature, at least one semitransparent visible pattern allowing the display of said mark (30) performed at the using electromagnetic radiation marking, said pattern is not visible in a second state, said activated state, at least a second temperature different from the first temperature. 13 / - Support according to claim 12, characterized in that said semi-transparent image is a polychromatic image.14 / - Support according to one of claims 12 or 13, characterized in that said semi-transparent image is disposed at least partially opposite said marking layer (17). 15 / - Support according to one of claims 12 to 14, characterized in that said semi-transparent image extends in a format similar to that of the transparent security layer (16). 16 / - Support according to one of claims 12 to 15, characterized in that it is carried by a film (18) support disposed on at least a portion of the surface of an outer layer of said multilayer data carrier. 10 17 / - Official document comprising at least one multilayer data carrier according to one of claims 12 to 16.
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    同族专利:
    公开号 | 公开日
    WO2016071627A1|2016-05-12|
    US20170313120A1|2017-11-02|
    EP3215369A1|2017-09-13|
    FR3027845B1|2016-12-30|
    EP3215369B1|2019-08-28|
    US11090968B2|2021-08-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1066978A2|1999-07-09|2001-01-10|Scientific Games International Limited|Security of printing articles|
    DE102008011299A1|2008-02-27|2009-09-03|Giesecke & Devrient Gmbh|Value document with counterfeit protection by thermochromic display.|
    US20120263893A1|2009-11-11|2012-10-18|Endres Guenter|Card-shaped data carrier|CN111051076A|2017-08-23|2020-04-21|凸版印刷株式会社|Laminate, identification, and method for verifying identification|
    WO2021099248A1|2019-11-22|2021-05-27|Covestro Intellectual Property Gmbh & Co. Kg|Layer structure with modified structure, and production thereof|US4142782A|1975-04-03|1979-03-06|Brian Edward D O|Display arrangements employing thermochromic compositions|
    FR2607435B1|1986-11-27|1989-04-07|Vernhet Louis|PROCESS FOR PRODUCING A PRODUCT WITH TRANSFERABLE PROTECTIVE FILM AND PRODUCT OBTAINED FOR THE PROTECTION OF DOCUMENTS OR THE LIKE|
    GB2274428B|1993-01-20|1996-08-21|Portals|Security threads|
    EP0659582B1|1993-12-24|1998-05-13|The Pilot Ink Co., Ltd.|Reversible thermochromic composition|
    US5873604A|1995-05-25|1999-02-23|Verify First Technologies, Inc.|Document security system having thermo-activated pantograph and validation mark|
    FR2785061B1|1998-10-23|2000-12-15|Francois Trantoul|METHOD FOR PRODUCING ANY PHOTOLUMINESCENT PRINTED POLYCHROMATIC IMAGE, IMAGE OBTAINED AND APPLICATIONS|
    FR2834484B1|2002-01-09|2004-09-03|Francois Trantoul|METHOD FOR PRODUCING A TRANSPARENT TRANSFERABLE SECURITY FILM PROTECTIVE DEVICE WITH SHORT ULTRAVIOLET|
    DE10243650A1|2002-09-19|2004-04-01|Giesecke & Devrient Gmbh|security element|
    CN1930005A|2004-02-09|2007-03-14|太阳化学公司|Reversible thermochromic systems|
    JP4539909B2|2004-10-01|2010-09-08|日本発條株式会社|Identification medium and identification method thereof|
    US7384890B2|2004-12-30|2008-06-10|Adp, Inc. (A Delaware Xcorporation|Check fraud protection techniques|
    US8092866B2|2005-03-22|2012-01-10|World Wide Lines, Inc.|Thermochromatic pigment covered article and method of making the same|
    US7674747B1|2005-07-15|2010-03-09|Edward L. Long|Appearance changing decorations on fabric using disappearing ink|
    US20080050540A1|2006-08-23|2008-02-28|Peter Christofer|Thermochromic display assembly|
    US20090322070A1|2006-12-27|2009-12-31|Jay Reichelsheimer|Method and system for hiding information|
    GB0714141D0|2007-07-19|2007-08-29|Rue De Int Ltd|security device|
    FR2922905B1|2007-10-26|2009-12-18|Arjowiggins Licensing Sas|SAFETY STRUCTURE COMPRISING A THERMOCHROMIC ELEMENT AND A PHOTOCHROMIC ELEMENT|
    US8002851B2|2009-03-13|2011-08-23|Nbcuniversal Media Llc|Thermochromic ink and coating compositions|
    US9158141B2|2013-01-25|2015-10-13|Dreamwell, Ltd.|Thermally activated mattress cover and display|
    US8921264B2|2013-01-28|2014-12-30|Chromatic Technologies, Inc.|Thermochromic coloring pad|
    WO2015184172A1|2014-05-30|2015-12-03|Cabela's Incorporated|System and method for application of chromic compositions|EP3095825B1|2015-05-19|2019-10-02|Agfa-Gevaert N.V.|Aqueous inkjet inks|
    DE102017004037B4|2017-04-26|2019-06-27|Mühlbauer Gmbh & Co. Kg|Security insert with a recess for a passport document and method for producing a security insert with a recess for a passport document|
    法律状态:
    2015-11-17| PLFP| Fee payment|Year of fee payment: 2 |
    2016-05-06| PLSC| Publication of the preliminary search report|Effective date: 20160506 |
    2016-11-23| PLFP| Fee payment|Year of fee payment: 3 |
    2017-11-27| PLFP| Fee payment|Year of fee payment: 4 |
    2018-11-27| PLFP| Fee payment|Year of fee payment: 5 |
    2019-11-25| PLFP| Fee payment|Year of fee payment: 6 |
    2020-11-25| PLFP| Fee payment|Year of fee payment: 7 |
    2021-11-24| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1460646A|FR3027845B1|2014-11-04|2014-11-04|METHOD FOR MANUFACTURING A DATA CARRIER AND DATA CARRIER THUS OBTAINED|FR1460646A| FR3027845B1|2014-11-04|2014-11-04|METHOD FOR MANUFACTURING A DATA CARRIER AND DATA CARRIER THUS OBTAINED|
    US15/523,915| US11090968B2|2014-11-04|2015-11-03|Method for manufacturing a data medium and data medium thus obtained|
    PCT/FR2015/052969| WO2016071627A1|2014-11-04|2015-11-03|Method for manufacturing a data medium and data medium thus obtained|
    EP15804878.5A| EP3215369B1|2014-11-04|2015-11-03|Process for manufacturing a data support and data support obtained therewith|
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