EP2945808B1 - Produit de valeur ou de sécurité et procédé de fabrication d'une caractéristique de sécurité sur ou dans le produit de valeur ou de sécurité - Google Patents

Produit de valeur ou de sécurité et procédé de fabrication d'une caractéristique de sécurité sur ou dans le produit de valeur ou de sécurité Download PDF

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Publication number
EP2945808B1
EP2945808B1 EP14700644.9A EP14700644A EP2945808B1 EP 2945808 B1 EP2945808 B1 EP 2945808B1 EP 14700644 A EP14700644 A EP 14700644A EP 2945808 B1 EP2945808 B1 EP 2945808B1
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EP
European Patent Office
Prior art keywords
layer
security
transparent
varnish layer
value
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.)
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Application number
EP14700644.9A
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German (de)
English (en)
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EP2945808A1 (fr
Inventor
Arthur Mathea
Franziska Peinze
Olga Kulikovska
Olaf Dressel
Edward Springmann
Stefan TRÖLENBERG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bundesdruckerei GmbH
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Bundesdruckerei GmbH
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Publication of EP2945808A1 publication Critical patent/EP2945808A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/382—Special inks absorbing or reflecting infrared light

Definitions

  • the present invention relates to a value or security product, for example a value or security document or a security element, wherein the security or security product has a security feature, as well as a method for producing the security feature on or in the value or security product.
  • a value or security document can be, for example, a personal document, in particular an identity card, or a means of payment, in particular a banknote.
  • Such documents are typically produced in standardized formats, for example in the ID 1, ID 2 or ID 3 format according to ISO 7810.
  • the documents may in principle consist of or consist of an organic polymer or a ceramic material, paper, cardboard, glass or metal contain. Cards and card-shaped components of book-type documents may preferably be made of laminated polymer films. To test the authenticity and / or coding of information, these products have security features.
  • security features used in the value or security products can only serve to prove the authenticity of the products, regardless of their nature or by their user.
  • Such security features are, for example, guilloches, watermarks, embossing prints, tipping pictures, holograms, the special paper of banknotes and the like.
  • Personalizing, for example personalizing, security features also contain in coded form or in plain text information about the type of document, about its owner and / or about an object to which the document is assigned. Such information may include a face image / portrait (for example in the form of a photograph) of the owner, his or her personal data such as name, date of birth, place of birth, signature, a personal identifier such as a membership number, or biometric data of the holder, such as fingerprints. Iris and retina detection.
  • Another security feature that individualizes the document can be, for example, a serial number of the document or the chassis number of a motor vehicle to which the document is assigned.
  • a security feature of a value or security document that can be visually perceived without technical aids is provided, which has a first material layer, which can be, for example, a plastic film, and a first lacquer layer.
  • the first lacquer layer is applied to the first material layer at least in some areas.
  • the refractive indices of the first material layer and the first resist layer differ by at least 0.1.
  • a second lacquer layer may be applied over the first lacquer layer.
  • the first material layer, the first and the second lacquer layer may be transparent.
  • the first lacquer layer can be produced, for example, by means of ink jet printing.
  • This lacquer layer may further comprise at least one luminescent excitable substance.
  • This security feature is used in particular to secure personalization data.
  • the value or security document may have further security features, for example a luminescent color.
  • DE 10 2008 012 423 A1 discloses a polymer layer composite of a plurality of substrate layers with a colored security feature.
  • the security feature consists in that information is split up into at least two print separations and printed on at least two different substrate layer surfaces, so that the print separations in the polymer layer composite lie one above the other in register and together reproduce the individualizing information, for example, from a viewing angle.
  • the substrate layer surfaces are preferably printed with the various print separations by means of a digital printing method, in particular by means of an inkjet printing method.
  • luminescent agents can be introduced in such a way that a white-light emission occurs in the case of UV excitation.
  • the substrate layer surface may be arranged below at least one of the printing extracts in the produced document body.
  • the UV radiation stimulates white fluorescence. This light is filtered by pixels of the printed separations arranged above, so that the information can be seen in color under a viewing angle.
  • EP 2 308 687 A1 discloses an identification document, on the substrate of which a laminating film is located, and thereon a fluorescent substance which, when irradiated in a certain wavelength range, fluoresces in a recognizable color with the naked eye.
  • the present invention has the essential further object on the basis of creating a cost-effective, simple and quickly realizable, in particular individualizing, security feature.
  • design elements and logos can be printed using conventional methods.
  • the term 'value or security product' which may in particular be a value or security document or a security element, it may include, for example, a passport, identity card, driver's license or another ID.
  • a product according to the invention may also be a security element, for example a sticker, label or the like, which has the security feature according to the invention and which can be permanently connected to a precursor of a value and / or security document in order to form the value and / or security document ,
  • the product may be, for example, a smart card.
  • the value or security document may be in ID 1, ID 2, ID 3 format or any other format such as a booklet form, such as a passport-like item.
  • a value or security product is generally a laminate of several document layers, which are connected in register under the action of heat and under increased pressure. These products should meet the standardized requirements, for example ISO 10373, ISO / IEC 7810, ISO 14443.
  • the product layers consist, for example, of a carrier material which is suitable for lamination.
  • the value or security product may be formed from a polymer selected from a group comprising polycarbonate (PC), in particular bisphenol A polycarbonate, polyethylene terephthalate (PET), their derivatives such as glycol modified PET (PETG), polyethylene naphthalate (PCT).
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PET glycol modified PET
  • PCT polyethylene naphthalate
  • PEN polyvinyl chloride
  • PVB polyvinyl butyral
  • PMMA polymethylmethacrylate
  • PI polyimide
  • PVA polyvinyl alcohol
  • PS polystyrene
  • PVP polyvinylphenol
  • PP polypropylene
  • PE polyethylene
  • TPE thermoplastic elastomers
  • TPU thermoplastic polyurethane
  • ABS acrylonitrile-butadiene-styrene copolymer
  • derivatives thereof paper, cardboard, glass, metal or ceramics.
  • the product can be made of several of these materials. It preferably consists of PC or PC / TPU / PC.
  • the polymers may be either filled or unfilled.
  • the above information relates both to films to be joined together and to liquid formulations applied to a precursor, such as a protective or topcoat.
  • the product is preferably prepared from 3 to 12 films, preferably 4 to 10 films.
  • the films may also carry print layers.
  • a laminate formed in this way can finally be coated on one or both sides with the protective or topcoat or with a film.
  • the film may be a volume hologram, a film with a surface hologram (for example a kinegraphic element) or a scratch-resistant film.
  • the protective or topcoat may be the transparent lacquer layer according to the present invention. Overlay layers formed in this way protect a security feature arranged underneath and / or give the document the required abrasion resistance.
  • the security feature may be formed on one of the inner layers.
  • security feature a feature which preferably causes an optical impression which can be determined by means of optical recognition methods and which is produced on account of luminescence by an optically perceptible design.
  • This design preferably includes an optically perceptible individualizing information.
  • the security feature may be configured to be directly perceived by a user, or it may be a machine-readable feature. In the latter case, the security feature is detected by means of, for example, electromagnetic radiation, spatially resolved receiving device and perceived by a viewer or evaluated by means of a device provided for this purpose.
  • the security feature can be manufactured as part of a value or security document or as a separate product (security element). The latter can be glued to the document, for example. The security feature will generally only occupy part of the surface of the document.
  • luminescence As far as in the description and in the claims of the present application, the term, luminescence 'is called, it is to be understood as fluorescence, phosphorescence both with Stokes and anti-Stokes shift. According to the present invention, this is to be understood in particular as photoluminescence.
  • the term "pattern" is to be understood as meaning a somewhat distributed distribution of surface elements perceptible to the human eye on one or more surfaces, resulting in a self-contained representation, for example one Image, picture element, character, in particular an alphanumeric character, a symbol, coat of arms, a line or another simple geometric shape, a formula or the like.
  • a pattern is to be understood as meaning a uniform, non-structured surface which is luminescent in only one color. This area may contain information, for example, by its color.
  • pattern element As far as the term "pattern element” is used in the description and in the claims of the present application, this is to be understood as meaning a component / element of a pattern (pixel), insofar as it is composed of discrete pattern elements.
  • a pattern element serves in such a case as the smallest structural element for the formation of the pattern, wherein all the pattern elements form the pattern.
  • the patterning material may be either transparent, translucent or opaque. Furthermore, it may have a certain brightness (absorption, remission), i. it may, for example, have a blackening, gray tinting or whitening, and / or it may have a (spectral) coloring and, in turn, a certain brightness.
  • the pattern elements may have a circular (dot-shaped), rectangular, square, hexagonal or other shape. Pattern elements can be the smallest elements of a perceptible representation to which one of the color values or color tones can be assigned in each case in a colorful color space (for example in the additive RGB color space).
  • the object underlying the present invention is achieved by the inventive value or security product with a security feature and by the inventive method for producing the security feature on or in the value or security product.
  • the value or security product according to the invention has a substrate having surfaces.
  • the security feature of the valuable or security product is formed in each case by at least one luminescent color layer applied to at least one of the surfaces of the substrate and at least one transparent lacquer layer which at least partially covers the at least one luminescent color layer (the transparency of the lacquer layer according to the present invention relates to the visible spectral range).
  • the at least one transparent lacquer layer lies on the side of the at least one luminescent ink layer in or on the product facing the viewer.
  • the at least one transparent lacquer layer is capable of absorbing electromagnetic radiation which is suitable for exciting the at least one luminescent color layer for luminescence. Furthermore, the at least one transparent lacquer layer covers the at least one luminescent color layer in the form of a pattern. Depending on the particular embodiment, the pattern may be formed by one type of resist or two or more types of resist. In a first embodiment, a single transparent resist layer capable of absorbing excitation radiation only partially covers the luminescent color layer, and in a second embodiment all transparent resist layers of several different types capable of absorbing excitation radiation cover the luminescent color layer in common either only partially or completely.
  • the at least one transparent resist layer may be disposed in direct contact with the at least one luminescent color layer, i. rest on this, or it may be spaced from the latter. For this purpose, the two types of layers can be arranged on different surfaces of one or more films, from which the value or security product is formed.
  • the at least one transparent lacquer layer is capable of absorbing electromagnetic radiation which is suitable for exciting the at least one luminescent color layer for luminescence and is formed on or above the at least one luminescent color layer to form a pattern.
  • the at least one luminescent color layer may in particular be unstructured, i. over the entire surface, be formed.
  • the color layer is not individualizing, in particular not personalizing.
  • the transparent lacquer layer is capable of absorbing the excitation radiation, which serves to excite the color layer for luminescence. Thereby, the excitation of the color layer for luminescence is prevented in the areas in which the lacquer layer is, while the color layer is excited in the remaining areas for luminescence.
  • the ensemble of color layer and lacquer layer can therefore reproduce the motif with suitable excitation for luminescence.
  • An individualization of the value or security product in the form of a pattern is accordingly achieved according to the invention by structuring of the easily structurable lacquer layer being produced instead of the pattern of the luminescent color layer that can not readily be obtained.
  • a system is found, with the individualization, in particular personalization, of a value or security product is made possible by means of luminescent inks in a simple manner.
  • a conventional luminescent printing ink can be applied, in particular printed, before or after the lamination to form the luminescent ink layer on an otherwise finished value or security product or on a film layer as a solid surface.
  • a conventional coating method, in particular printing method can be used.
  • the color layer is individualized with a transparent varnish.
  • an inkjet ink must fulfill special properties: Firstly, the viscosity of the ink and the size of the ink particles contained therein for a good and reliable printability must meet the requirements. On the other hand, the particles in the ink should not sediment, or individual ink constituents should not precipitate, as this would clog the nozzle orifices of the nozzle head.
  • the problem is solved that on the one hand for increasing the security of value or security products against counterfeiting, falsification and / or copy new, unconventional materials are used, these on the other hand for individualization by means of digital printing methods very difficult to one can be adjusted by inkjet printable and long-term stable ink. Therefore, no special printing ink needs to be produced for the realization of this security feature.
  • an individualizing security feature based on a luminescent ink layer can be produced. Since valuable or security documents are usually given a protective finish in a final process step in order to protect the documents against scratches or other mechanical damage, this method step can also be used for the production of the transparent lacquer layer. Thus, no further process step for the production of the security feature according to the invention is required.
  • the transparent lacquer layer therefore has the scratch resistance and abrasion resistance required for protection against mechanical damage, it is possible to dispense with a further lacquering for this purpose.
  • the protective coating is protected by the patterned application on the value or security product against forgery or falsification, because a manipulation, such as a grinding of the paint and a re-individualization and new overprinting with a conventional paint, would be immediately recognizable under the excitation conditions for luminescence ,
  • the luminescent color layer is selected such that UV radiation can be used for its excitation for luminescence as electromagnetic radiation.
  • the luminescent color layer can also be selected such that electromagnetic excitation is used to excite it for luminescence Radiation in the visible spectral range or IR radiation is used.
  • the transparent lacquer layer would have to be able to absorb radiation in the visible spectral range and would therefore be colored or at least tinted gray, so that the individualization feature would already be recognizable to the naked eye.
  • the selection of a luminescent ink layer whose luminescence is excited by electromagnetic radiation which is not in the visible spectral range is advantageous over ink layers with excitation radiation lying in the visible spectral range. Because the security feature is not readily recognizable as such in the former case. If the luminescent ink layer is furthermore excitable for luminescence by means of IR radiation, the transparent coating layer would not necessarily be colored or at least gray, so that the security feature according to the invention as such can not be recognized by the naked eye. However, to realize this embodiment, special luminescent substances are required (anti-Stokes luminescent substances) in order to enable luminescence in the visible spectral range in this type of excitation.
  • the luminescent ink layer contains at least one luminescent substance, wherein a luminescent substance should also be understood to mean a luminescent pigment.
  • the luminescent color layer may have a specific absorption or remission in the visible spectral range, ie be colored, or it may be colorless. In particular, it is preferred if the luminescent ink layer is colorless. It is further preferred that the luminescent color layer luminesces in the visible spectral range, ie in a spectral range of about 400 nm to about 750 nm. Thus, the luminescence is visible to the naked eye.
  • the luminescent color layer would be machine-readable and for this purpose detectable and readable by means of a device arranged for this purpose. If the spectral distribution of luminescence in the visible spectral region is not uniform, the emitted light is colored, for example slightly yellowish, if higher energy (shorter wavelength) spectral components occur to a lesser extent, or greenish, if lower energy (longer wavelength) and higher energy spectral components in lower Scope occur.
  • the luminescent ink layer may contain a single luminescent substance, namely an organic or an inorganic substance, or a mixture of a plurality of luminescent substances, namely organic and / or inorganic substances.
  • Typical luminescent substances are, for example, in US 3,474,027 A . DE 198 60 093 A and DE 10 2007 035 592 A1 , their disclosure content hereby incorporated in full in the present application.
  • These are host lattices doped with rare earths as luminophores, it being possible to use substances doped in particular with terbium, cerium and / or europium, for example oxysulfides and oxynitrides.
  • the pigments formed herewith can additionally be coated with organic substances in order to increase the quantum yield of the luminescence.
  • quantum dots can also be used, ie semiconductor particles whose size is in the nm range, for example based on CdS.
  • organic luminescent substances are also usable, such as rhodamine 6G or fluorescein.
  • the luminescent ink layer can be formed uniformly luminescent and either pure white, which also means slightly colored layers, or luminescent in a uniform color. It can also be multicolored luminescent.
  • the luminescent color layer may be formed in a luminescent iris.
  • the luminescent ink layer may further be present either over the entire surface or in a pattern, i.
  • the luminescent color layer regions can be arranged arbitrarily to one another, namely either regularly or irregularly, and wherein the luminescent regions of the color layer can in turn luminesce uniformly in color or luminesce in multiple colors.
  • the luminescent ink layer can be applied to the substrate by means of luminescent inks or inks.
  • the ink or ink may contain further customary constituents, for example solvents, binders, resins, varnishes and auxiliaries.
  • the luminescent ink layer is preferably applied to the substrate surface by a printing process.
  • a printing process any other application techniques are also conceivable, such as a roller coating method, a dispenser method and a curtain casting method.
  • the printing process may be a conventional printing process that has been found to be well suited for the printing of luminescent inks, for example, an offset, flexographic or screen gravure printing process.
  • the transparent lacquer layer is substantially colorless. This means that the transparent lacquer layer has little or no light absorption in the visible spectral range.
  • the transparent lacquer layer may optionally have only a low absorption, which causes a slight subjective color impression with a slight color cast. Alternatively, the transparent lacquer layer may also be colored.
  • the transparent lacquer layer is capable of absorbing the electromagnetic radiation which is suitable for exciting the luminescent color layer for luminescence.
  • the transparent lacquer layer has special additives which absorb in this spectral range, or the color layer is formed from substances which absorb in this spectral range.
  • the excitation radiation is UV radiation
  • the transparent lacquer layer absorbs in the UV spectral range.
  • the transparent resist layer may be formed by a polymer that absorbs in the excitation spectral region.
  • the transparent lacquer layer can be formed by forming the lacquer layer by means of a transparent lacquer on a substrate surface.
  • the lacquer may be, for example, a polyacrylate lacquer.
  • the lacquer contains, for example, titanium dioxide, zinc oxide, benzophenone, benzotriazole and / or the derivatives of these compounds, and / or the lacquer is formed from a polymer which Contains UV-absorbing groups, for example aromatic radicals.
  • the transparent lacquer layer is applied in a pattern on or over the luminescent ink layer.
  • individual regions of the luminescent color layer are shaded by the transparent lacquer layer, so that the excitation radiation can not reach the luminescent color layer and therefore can not luminesce it.
  • the luminescent ink layer therefore luminesces only in those areas in which the transparent lacquer layer is not located.
  • the color layer luminesces in a pattern which is complementary to the pattern of the transparent lacquer layer.
  • the pattern in which the transparent lacquer layer is produced may have any shape. In particular, it may be in the form of alphanumeric or other characters, a logo, an image, in particular a face image of a person, a symbol, a coat of arms or a formula.
  • the two-dimensional distribution of the regions of the pattern in which the transparent lacquer layer is located and of the complementary regions in which there is no transparent lacquer layer, ie the design of the pattern of the transparent lacquer layer, is arbitrary.
  • lacquer layer area and one open area in which there is no lacquer layer or, alternatively, a (contiguous) open area and several lacquer layer areas or, alternatively, several free areas and several lacquer layer areas or, alternatively, thereto , several free areas in a (contiguous) paint layer area on each one of the product surfaces are located.
  • the free areas and the lacquer layer areas may be in a regular arrangement with respect to each other or in an irregular (stochastic or non-stochastic) arrangement.
  • the lacquer layer areas can be present, for example, in a hexagonal arrangement, wherein the free areas separate the lacquer layer areas from one another.
  • the lacquer layer areas can be formed, for example, by simple geometric shapes, for example by circular, square, rectangular, hexagonal areas, elongated structures, such as lines, ellipses, and the like. Lacquer layer areas in several of these forms can occur together. If there are several paint layer areas, they are isolated from each other, ie they do not touch. The aforementioned simple forms of the lacquer layer areas can also touch one another.
  • the lacquer layer areas can be screened or un-screened.
  • the lacquer layer regions together form a two-dimensional structure which, for example, codes information and preferably forms an individualizing pattern.
  • the at least one lacquer layer is produced in the form of an individualizing, for example personalizing, marking.
  • the individualizing marking may be for the holder of the value and / or security document by lettering with owner-specific data, for example the name, address, birthday or birthplace lettering, or an image representation, for example a face image of the document holder or the reproduction of his signature , be formed for an object, such as a motor vehicle, its VIN and for the document itself, for example in the form of a serial number.
  • owner-specific data for example the name, address, birthday or birthplace lettering
  • an image representation for example a face image of the document holder or the reproduction of his signature
  • an object such as a motor vehicle, its VIN and for the document itself, for example in the form of a serial number.
  • the transparent varnish is applied to the substrate surface by a printing process.
  • the printing process is a digital printing process, even more preferably a non-impact printing process, and most preferably an ink jet printing process.
  • the pattern for a person who is assigned to the value or security product can be made individualizing, without having to be generated by an ink jet printing process. Since the transparent lacquer can be readily processed by means of an ink-jet printing process, the individualization of the luminescent ink layer is easily possible in this way. Thus, a value or security product marked with it can be assigned individually, for example, to a person or an object.
  • the luminescent color layer and the transparent lacquer layer can be directly produced on each other, so that they are in contact with each other. Or these two layers may be spaced apart. In the latter case, the two types of layers are formed on different surfaces of substrates, which together form a value or security product or a component of a value or security product.
  • the luminescent color layer and the transparent lacquer layer preferably extend over the same area of the value or security product and are thus arranged in registration or superimposed on one another. But it is also possible that the luminescent ink layer protrudes beyond the transparent lacquer layer or vice versa. In the former case, the color layer luminesces upon irradiation with the excitation radiation in the projecting region. In the latter case, the luminescent motif extends over a smaller area than the transparent lacquer layer. In principle, it is possible that both the luminescent color layer and the transparent lacquer layer do not occupy the entire product area but only a partial area thereof.
  • the luminescent ink layer occupies only a partial area of the product surface, but the transparent lacquer layer extends over the entire product surface (of course, except the areas in which the lacquer layer for the purpose of luminescence is not present), since the transparent Paint layer can also serve the purpose of protecting the entire product surface against scratches and other mechanical damage.
  • the individualization of the product with this security feature can be carried out, for example, in one of the last production steps together with the coating of the product. An additional process step for protection against mechanical damage is thus unnecessary. It is only a special paint for the coating to select, which has the required optical properties.
  • the at least one transparent lacquer layer is formed by at least one first lacquer layer which covers the at least one luminescent ink layer in at least one first lacquer layer region, wherein the at least one luminescent ink layer in at least one of the at least a first transparent resist layer not covered second lacquer layer region, which is at least substantially complementary to the at least one first lacquer layer region is covered by at least one second transparent lacquer layer, which is also capable of absorbing electromagnetic radiation, which is used to excite the at least one luminescent ink layer Luminescence is suitable.
  • the second transparent lacquer layer preferably does not extend into the first lacquer layer regions.
  • the at least one second transparent lacquer layer has a different absorption spectrum from the at least one first transparent lacquer layer.
  • both types of lacquer layer have different optical properties and cover the luminescent color layer together completely and completely or alternatively only partially.
  • the two paint layers act as differently filtering UV radiation, so that a switchability of the luminescence can be generated.
  • the lacquer layers absorb either UVA or UVB radiation or are transparent to them, so that the product lacquering is protected, without this effect being recognizable under white light conditions.
  • the at least one first transparent resist layer absorb electromagnetic radiation in the UV A range (380 to 315 nm) and the at least one second transparent resist layer electromagnetic radiation in the UV B range (315 to 280 nm), wherein the UV B Radiation from the first transparent lacquer layer and the UV A radiation each of the second transparent lacquer layer is not or only slightly absorbed.
  • luminescent color and transparent lacquer layers can be produced both on substantially finished value or security products or on card blanks or on precursors for the value or security products, for example lamination foils.
  • the substrate on which the luminescent color layer and / or the transparent lacquer layer are formed may be in the form of a foil or in the form of a more rigid article than a foil, such as a plate or card.
  • the substrate may be in the form of a sheet or sheet or card or ribbon. It can be single-layered or formed from several layers. It may be made from any of the polymers mentioned for the value and / or security product and may be present unfilled or filled with fillers, such as pigments, reinforcing materials, such as fibers.
  • the substrate can therefore be transparent or translucent (not lightly or hardly light-absorbing, but light-scattering) or opaque.
  • the substrate may be uncolored or colored (i.e., absorbing in the visible, UV, and / or IR spectral region), including luminescent, dyes (i.e., absorbing in these spectral regions).
  • the substrate may be a precursor (blank) for a security and / or security document and, in addition to the security feature to be formed by the method according to the invention, further security features, such as guilloches, a security thread, microfilm, a fluorescent print pattern or a see-through pass.
  • the present invention is located on one of the surfaces of the substrate another security feature, such as a printed face image of the person who is associated with the value or security product.
  • the luminescent ink layer and the transparent lacquer layer (s) are at least partially produced on the further security feature in this development of the invention.
  • this is another security feature against counterfeiting, falsification and Copy protected.
  • the color layer and the lacquer layer (s) can also be applied to a non-individualizing security print, for example guilloches or an iris print. As a result, this further security feature is individualized.
  • the at least one substrate, on the at least one surface of which the security feature according to the invention is located, can be formed by a respective product layer or by the product itself.
  • a precursor for the value and / or security product that does not yet have all the product layers but most of the security features of the document can also be used as a substrate.
  • the value or security product may have at least one further security feature which is either individualizing or not individualizing.
  • Other security features include guilloches, watermarks, embossing prints, a security thread, microfilm, tipping, füranderpasser and the like.
  • the document may also comprise electronic components, for example an RFID circuit with antenna and RFID microchip, electronic display elements, LEDs, touch-sensitive sensors and the like.
  • the electronic components may be hidden between two opaque layers of the document.
  • an identity card 100 shown in FIG. 1 each have a conventional format for the card, for example the format ID 1 according to ISO / IEC 7810.
  • the card may be produced as a laminate from a plurality of polymer layers, which may consist of polycarbonate and / or polyethylene terephthalate. Some of these layers may be colored opaque with pigments, for example, to hide the card from an internal electronic device. In the following it will be assumed for the sake of simplicity that the card is formed from a polymer layer as substrate.
  • the card has a front side 101 and a back side (not shown). It may, for example, have a thickness of 800 ⁇ m.
  • the card may include a plurality of security features, such as a face image 110 of the person to whom the card is associated, a data field 120 in which, for example, that person's data is shown in plain text, and other security features that are not shown.
  • the card 100 has a security feature 200 according to the invention.
  • a reproduction of the facial image of the holder of the card is reproduced in the form of a pattern as a representative of any differently designed marking. Other representations may be formed by any other pattern.
  • Fig. 2 to 5 and 7 each partial sections of sectional views II are represented by the security feature of the invention.
  • the security feature 200 on the card 100 according to Fig. 1 . 6 is not recognizable when illuminated with white light (VIS), since the substances forming the security feature show little or no absorption under this illumination (in Fig. 6 not shown separately).
  • VIS white light
  • the security feature is illuminated with UV radiation, for example UVA radiation
  • the facial image 210 of the cardholder can be recognized ( Fig. 1b ). In this case, essentially the areas of the image that reproduce the facial image itself while the background remains dark.
  • Fig. 6 when security feature 200 is illuminated with UV A radiation and UV B radiation, different representations of the same facial image 210: when illuminated with UV A radiation, the facial image itself is substantially dark while the background appears bright ( Fig. 6a while the face image is substantially bright when illuminated with UVB radiation while the background appears dark ( Fig. 6b ).
  • the fluorescent color shows up when illuminated with UV radiation, for example in the UV A range, while the color layer shows no fluorescence when illuminated with white light and otherwise has no absorption in the visible range.
  • the fluorescence upon excitation is green, for example.
  • a second (upper) polymer layer 106 for example likewise made of polycarbonate transparent in the visible and UV range, is arranged above the first polymer layer 105, for example made of polycarbonate, with the fluorescent color layer 300 applied thereon.
  • a second (upper) polymer layer 106 for example likewise made of polycarbonate transparent in the visible and UV range, is arranged.
  • Printed on the surface 101 of this second polymer layer is a lacquer layer 400, 420 that is transparent in the visible spectral range and absorbs in the UV spectral range.
  • This lacquer layer forms a pattern on the surface of the second polymer layer which corresponds to the pattern to be displayed.
  • This lacquer layer is arranged on the second (upper) polymer layer in the same area and exactly in register above the fluorescent color layer, which is located on the first (lower) polymer layer.
  • the two polymer layers are combined to form a stack so that the fluorescent color layer and the transparent lacquer layer lie over one another in register.
  • the polymer layers optionally together with other polymer layers, bonded together, for example by means of a lamination process.
  • Above the second (upper) polymer layer may be another transparent polymer layer.
  • initially only the fluorescent color layer can be applied to the surface 102 of the first (lower) polymer layer and the first and the second polymer layer and optionally further polymer layers can then be bonded together to form a polymer layer composite.
  • the transparent lacquer layer 400 is then finally printed on the outside of the polymer layer composite.
  • the underlying fluorescent color layer 300 fluoresces only in the second lacquer layer regions 410, in which the color layer is not covered by the lacquer layer pattern, since only there UV radiation can stimulate the color layer to fluorescence.
  • the UV radiation in the first lacquer layer regions 440 is absorbed by the lacquer layer, so that no UV radiation can penetrate the color layer there. As a result, the color layer does not fluoresce in these areas. Thus, a fluorescence image corresponding to the pattern of the resist layer is obtained.
  • the lacquer layer can be printed on the second (upper) polymer layer 106 or the polymer layer composite by means of a digital printing process, for example by means of an inkjet printing process, personalization of the card 100 is possible. If the lacquer layer is first printed after the card is finished, by the way, the personalization can be completed in a very simple manner by printing the transparent lacquer layer on this substantially finished card with the desired pattern.
  • the view of the card 100 according to this embodiment is when illuminated with white light (VIS) or UV radiation (UV).
  • VIS white light
  • UV UV radiation
  • the fluorescent color layer 300 and the transparent lacquer layer 400, 420 are in contact with one another and applied to one another on the surface 101 of the same substrate foil 105 in register with one another and with registering accuracy.
  • the fluorescent ink layer is first printed by means of the conventional printing process, for example by offset printing, over the entire surface of the substrate film and then the transparent coating layer in the desired patterning, for example by means of ink jet printing on the fluorescent ink layer.
  • the substrate film can then be joined together with further polymer layers to form a polymer layer composite, for example by means of a lamination process.
  • the two layers 300, 400, 420 can be printed on the outside thereof after the production of the card 100 ,
  • the lacquer layer 400, 420 absorbs incident UV radiation in the first lacquer layer regions 440, so that the underlying color layer 300 does not fluoresce.
  • the UV radiation excites the color layer in the second lacquer layer areas 410, in which there is no UV-absorbing lacquer.
  • the view of the card 100 according to this embodiment is when illuminated with white light (VIS) or UV radiation (UV).
  • VIS white light
  • UV UV radiation
  • the fluorescent color layer 300 is printed onto the surface 102 of a first (lower) polymer layer 105 and two different transparent resist layers 400, namely first resist layers 420 and second resist layers 430, onto the surface 101 of a second (upper) polymer layer 106.
  • this third embodiment corresponds to the in Fig. 2 shown first embodiment. In this respect, the above explanations apply to Fig. 2 also for this embodiment.
  • the two resist layers 420, 430 are each patterned, ie, with the formation of a pattern, printed on the upper side 101 of the first (upper) polymer layer 106, so that the fill both layers of paint occupied by the paint layers surface field on this polymer layer over the entire surface.
  • the first resist layers 420 absorb UV radiation, for example UVA radiation.
  • the second lacquer layers 430 are completely transparent to both visible radiation and UV radiation.
  • UV radiation penetrates into the second resist layer regions 410 formed by the second resist layers 430 to the ink layer 300 and excites them to fluoresce.
  • the first lacquer layers 420 absorb the UV radiation in the first lacquer layer regions 440 formed by them, so that the fluorescent color layer in these regions is not excited to fluoresce.
  • the first resist layers 420 and the second resist layers 430 absorb UV radiation, wherein the first resist layers absorb UVA radiation, for example, and the second resist layers absorb UVB radiation, while these layers do not absorb the other radiation.
  • UVA radiation Upon irradiation of UVA radiation, it can pass through the second lacquer layers 430 in the second lacquer layer regions 410 and thus excite the underlying color layer 300 to fluoresce (in FIG Fig. 4 shown).
  • the UV B radiation in the first lacquer layer regions 440 can pass through the first lacquer layers 420 and thus excite the underlying color layer 300 to fluoresce, while the UV B radiation from the second resist layers 430 is absorbed in the second resist layer areas 410, so that the underlying color layer 300 is not excited to fluorescence there (not shown).
  • This generates complementary representations.
  • by switching the lighting with spectrally different UV radiation different representations of the pattern can be generated ( Fig. 6 ).
  • This embodiment with a full-surface lacquer layer 400 has the advantage that the first and second lacquer layers 420, 430 can also serve as a protective or topcoat for sealing the card 100.
  • the paint layers are arranged on the outside of the card.
  • these two layers of paint fulfill two purposes: On the one hand serve On the other hand, they serve to personalize the underlying full-surface fluorescent layer 300. Since inkjet printing can be created individually from card to card, the card can be personalized after completion with individual design of the resist structures , For this purpose, the card may already have the full-surface fluorescent color layer, optionally in an inner plane, as shown in this embodiment.
  • the fluorescent color layer 300 is printed on the surface 101 of a polymer layer 105 and directly on the color layer two different transparent lacquer layers 400, namely first lacquer layers 420 in first lacquer layer regions 440 and second lacquer layers 430 in second lacquer layer regions 410.
  • this fourth embodiment corresponds to the in Fig. 4 shown third embodiment.
  • the above explanations apply to Fig. 4 also for this embodiment, whereby also in this case the two above-explained sub cases are possible.
  • Fig. 7b the case is shown in which the construction of Fig. 5 (fourth embodiment) is illuminated with UV B radiation.
  • the second resist layers 430 forming the second resist layer regions 410 absorb the irradiated UV B radiation, so that fluorescence from the ink layer 300 is emitted only in the first resist regions 440.
  • an inkjet printing device 500 can be used which, in addition to the print heads for printing the color components CMYK, has at least two print heads L1, L2 for printing the two lacquers to produce the first transparent lacquer layers 420 and the second transparent lacquer layers 430 has.
  • These two types of lacquer coating are preferably printed on the outside after the production of the card 100 in one operation. This completes the personalization of the card.

Landscapes

  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)

Claims (12)

  1. Produit de valeur ou de sécurité (100) présentant un substrat (105, 106) présentant des surfaces (101, 102), dans lequel le produit de valeur ou de sécurité (100) présente une caractéristique de sécurité (200) qui est formée par respectivement au moins une couche de couleur (300) luminescente appliquée sur au moins une des surfaces (101, 102) du substrat (105, 106) ainsi que respectivement au moins une couche de laque (400) transparente recouvrant au moins partiellement l'au moins une couche de couleur (300) luminescente, dans lequel l'au moins une couche de laque (400) transparente est apte à l'absorption de rayonnement électromagnétique qui est approprié à l'incitation de l'au moins une couche de couleur (300) luminescente à la luminescence, et dans lequel l'au moins une couche de laque (400) transparente recouvre l'au moins une couche de couleur (300) luminescente sous la forme d'un motif.
  2. Produit de valeur ou de sécurité (100) selon la revendication 1, caractérisé en ce que le rayonnement électromagnétique est un rayonnement UV.
  3. Produit de valeur ou de sécurité (100) selon l'une des revendications précédentes, caractérisé en ce que l'au moins une couche de laque (400) transparente est sensiblement incolore.
  4. Produit de valeur ou de sécurité (100) selon l'une des revendications précédentes, caractérisé en ce que l'au moins une couche de laque (400) transparente est formée par au moins une première couche de laque (420) transparente qui recouvre l'au moins une couche de couleur (300) luminescente dans respectivement au moins une première zone de couche de laque (440), et en ce que l'au moins une couche de couleur (300) luminescente est recouverte dans respectivement au moins une seconde zone de couche de laque (410) non recouverte par l'au moins une première couche de laque (420) transparente, par respectivement au moins une seconde couche de laque (430) transparente qui n'est pas apte à l'absorption de rayonnement électromagnétique qui est approprié à l'incitation de l'au moins une couche de couleur (300) luminescente à la luminescence.
  5. Produit de valeur ou de sécurité (100) selon l'une des revendications 1 à 3, caractérisé en ce que l'au moins une couche de laque (400) transparente est formée par au moins une première couche de laque (420) transparente qui recouvre l'au moins une couche de couleur (300) luminescente dans respectivement au moins une première zone de couche de laque (440), et en ce que l'au moins une couche de couleur (300) luminescente est recouverte dans respectivement au moins une seconde zone de couche de laque (410) non recouverte par l'au moins une première couche de laque (420) transparente, par respectivement au moins une seconde couche de laque (430) transparente qui est aussi apte à l'absorption de rayonnement électromagnétique qui est approprié à l'incitation de l'au moins une couche de couleur (300) luminescente à la luminescence, dans lequel l'au moins une seconde couche de laque (430) transparente présente un spectre d'absorption différent de l'au moins une première couche de laque (420) transparente.
  6. Produit de valeur ou de sécurité (100) selon la revendication 5, caractérisé en ce que l'au moins une première couche de laque (420) transparente absorbe un rayonnement électromagnétique dans la plage des UVA et en ce que l'au moins une seconde couche de laque (430) transparente absorbe un rayonnement électromagnétique dans la plage des UVB.
  7. Produit de valeur ou de sécurité (100) selon l'une des revendications précédentes, caractérisé en ce que le motif pour une personne, à laquelle est associé le produit de valeur ou de sécurité (100), est individualisant.
  8. Produit de valeur ou de sécurité (100) selon l'une des revendications précédentes, caractérisé en ce que l'au moins une couche de laque (400) transparente est formée par une laque transparente résistante à l'abrasion et/ou aux rayures.
  9. Procédé de fabrication d'une caractéristique de sécurité (200) sur ou dans un produit de valeur ou de sécurité (100) qui présente un substrat (105, 106) présentant des surfaces (101, 102), comprenant (a) l'application respectivement au moins d'une couche de couleur (300) luminescente sur au moins une des surfaces (101, 102) du substrat (105, 106) et (b) la formation d'au moins une couche de laque (400) transparente sur ou au-dessus de l'au moins une couche de couleur (300) luminescente de sorte que l'au moins une couche de couleur (300) luminescente soit recouverte au moins partiellement par l'au moins une couche de laque (400) transparente, dans lequel l'au moins une couche de laque transparente (400) est apte à l'absorption de rayonnement électromagnétique qui est approprié à l'incitation d'au moins une couche de couleur (300) luminescente à la luminescence, et dans lequel l'au moins une couche de laque (400) transparente est formée par formation d'un motif sur l'au moins une couche de couleur (300) luminescente.
  10. Procédé de fabrication d'une caractéristique de sécurité (200) selon la revendication 9, caractérisé en ce que l'au moins une couche de laque (400) transparente est formée comme au moins une première couche de laque (420) transparente, avec laquelle l'au moins une couche de couleur (300) luminescente est recouverte dans respectivement au moins une première zone de couche de laque (440), et en ce que l'au moins une couche de couleur (300) luminescente est recouverte dans respectivement au moins une seconde zone de couche de laque (410) non recouverte par l'au moins une première couche de laque (420) transparente, par au moins une seconde couche de laque (430) transparente qui n'est pas apte à l'absorption du rayonnement électromagnétique qui est approprié à l'incitation d'au moins une couche de couleur (300) luminescente à la luminescence.
  11. Procédé de fabrication d'une caractéristique de sécurité (200) selon l'une des revendications 9 et 10, caractérisé en ce que l'au moins une couche de couleur (300) luminescente et l'au moins une couche de laque (400) transparente sont générées avec un procédé d'impression.
  12. Procédé de fabrication d'une caractéristique de sécurité (200) selon l'une des revendications 9 à 11, caractérisé en ce que l'au moins une couche de laque (400) transparente est formée à l'aide d'un procédé d'impression numérique.
EP14700644.9A 2013-01-21 2014-01-15 Produit de valeur ou de sécurité et procédé de fabrication d'une caractéristique de sécurité sur ou dans le produit de valeur ou de sécurité Active EP2945808B1 (fr)

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Application Number Priority Date Filing Date Title
DE102013200895.3A DE102013200895B4 (de) 2013-01-21 2013-01-21 Wert- oder Sicherheitsprodukt sowie Verfahren zur Herstellung eines Sicherheitsmerkmals auf oder in dem Wert- oder Sicherheitsprodukt
PCT/EP2014/050665 WO2014111405A1 (fr) 2013-01-21 2014-01-15 Produit de valeur ou de sécurité et procédé de fabrication d'une caractéristique de sécurité sur ou dans le produit de valeur ou de sécurité

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EP2945808A1 EP2945808A1 (fr) 2015-11-25
EP2945808B1 true EP2945808B1 (fr) 2017-09-20

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WO2014111405A1 (fr) 2014-07-24
DE102013200895B4 (de) 2017-05-11

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