WO2017134130A1 - Produit de valeur ou de sécurité, procédé de fabrication d'un produit semi-fini et procédé de vérification - Google Patents

Produit de valeur ou de sécurité, procédé de fabrication d'un produit semi-fini et procédé de vérification Download PDF

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Publication number
WO2017134130A1
WO2017134130A1 PCT/EP2017/052196 EP2017052196W WO2017134130A1 WO 2017134130 A1 WO2017134130 A1 WO 2017134130A1 EP 2017052196 W EP2017052196 W EP 2017052196W WO 2017134130 A1 WO2017134130 A1 WO 2017134130A1
Authority
WO
WIPO (PCT)
Prior art keywords
security
printing
black
ink
product
Prior art date
Application number
PCT/EP2017/052196
Other languages
German (de)
English (en)
Inventor
Michael Knebel
André LEOPOLD
Franziska Peinze
Uwe Seidel
Ulrich Schneider
Original Assignee
Bundesdruckerei Gmbh
Bundesrepublik Deutschland, Vertreten Durch Das Bundesministerium Des Innern, Vertreten Durch Das Bundeskriminalamt
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bundesdruckerei Gmbh, Bundesrepublik Deutschland, Vertreten Durch Das Bundesministerium Des Innern, Vertreten Durch Das Bundeskriminalamt filed Critical Bundesdruckerei Gmbh
Priority to EP17703117.6A priority Critical patent/EP3411245B1/fr
Priority to PL17703117T priority patent/PL3411245T3/pl
Priority to ES17703117T priority patent/ES2890978T3/es
Publication of WO2017134130A1 publication Critical patent/WO2017134130A1/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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • 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
    • B42D25/309—Photographs
    • 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
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/455—Associating two or more layers using heat
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/46—Associating two or more layers using pressure
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties

Definitions

  • the present invention relates to a valuable or security product, for example an identification (ID) document, for example a passport, identity card or driving license, or a means of payment, in particular a banknote.
  • ID identification
  • the invention is based on a value or security product, which is formed by a product carrier, on and / or in which there is a security printing, wherein the security printing with at least two different color impressions causing inks and at least one black appearing ink is formed.
  • the present invention also relates to a method for producing a precursor for a value or security product, which is formed with a product carrier on and / or in which there is a security printing.
  • the invention thus also proceeds from a method which comprises the following method steps: providing a printing substrate, providing and printing the printing inks which cause the at least two different color impressions, and providing and printing the at least one black printing ink, the security printing on the printing substrate is formed.
  • the present invention also relates to a method for verifying the authenticity of the value or security product.
  • Value or security products in particular securities or security documents, are used to verify the identity of a person, in particular when crossing a state border, or a thing or claim, for example, on payment of a sum of money or on the release of a product or service.
  • the product therefore contains security features whose imitation externally difficult or even impossible.
  • the product such as banknotes, consists of a not readily available material.
  • security features can be provided by special colors, for example luminescent or optically variable colors, optical elements such as holograms, tilt images, kinegraphic objects, lens or prism arrays, also guilloches (with visible colors / inks or luminescent colors / inks), mottled fibers, security threads and others, be formed.
  • special colors for example luminescent or optically variable colors, optical elements such as holograms, tilt images, kinegraphic objects, lens or prism arrays, also guilloches (with visible colors / inks or luminescent colors / inks), mottled fibers, security threads and others, be formed.
  • the security features used in the value or security products can only serve to prove the authenticity of the documents, regardless of their nature or by their user.
  • Personalizing, for example, personalizing, security features also contain in coded form or in plain text information about the type of document, about the user of this document and / or about an object to which the document is uniquely assigned. Such information may be a portrait (photograph) of the user, his or her personal data such as name, date of birth, place of birth, address, or a personal identifier such as a membership number or his / her signature.
  • Another security feature that individualizes the value or security product can be, for example, a serial number of the product or the chassis number of a motor vehicle to which the product is assigned.
  • DE 10 2007 018 450 A1 discloses a laminated security document which is in the form of a document composite which has at least one inner layer and at least two overlay foils covering the inner layer.
  • the inner layer contains a color light image with the face image of the document holder.
  • the color light image is an exposed positive-positive silver dye bleached photographic emulsion.
  • it is also known to produce the facial image of a person on an identity or security document by printing technology. This is pointed out in DE 199 06 388 A1.
  • This document relates to a method and apparatus for personalizing and verifying such documents.
  • a security and / or value document with an individualizing security feature is given, for example, in DE 10 2008 012 423 A1.
  • This document is designed as a polymer layer composite, which is produced by lamination of several polymer layers and in which at least one individualizing information is stored by printing technology. The information is decomposed in the composite in at least two print extracts, each one
  • the at least two pressure separations are in at least two arranged spaced apart planes.
  • a printed image embodied by the information is decomposed into pixels and each pixel is assigned to exactly one of the at least two print separations.
  • the print can reproduce a facial image.
  • the print separations are printed on the polymer layers. After laminating the printed polymer layers, the printed surfaces are inside the document.
  • luminescent colorants can be printed on a polymer layer surface arranged below the print separations, so that white light is radiated flat in the case of UV excitation. The light is filtered by the pixels of the above arranged pressure separations, so that the information is preferably to recognize color in a vertical plan view.
  • DE 10 2012 218 053 A1 discloses a valuable and / or security product with a security feature, wherein the security feature contains at least one luminescent agent and at least one absorptive spectral filter agent in and / or on a product carrier.
  • the absorptive spectral filter means serves to filter luminescence radiation emanating from the at least one luminescence medium.
  • DE 10 2013 218 861 A1 discloses a method for producing a semi-finished product having a high-resolution safety pressure for a security document, which produces a multicolored impression on UV excitation in the visible wavelength range.
  • at least two color printing compositions are provided, which in the printed state on UV excitation in the visible wavelength range show a colored luminescence, the at least two color printing compositions in the printed state at UV excitation have different Lumineszenzspektren that cause different color impressions.
  • the color printing compositions print colored information components of the security print to be produced.
  • an absorber printing composition is provided which comprises a UV absorber which exhibits no luminescence in the visible wavelength range upon UV excitation.
  • the absorber printing composition prints black information components of the security print.
  • the objects underlying the invention There is a constant need for novel, in particular individualizing, for example personalizing, security features that are secured against counterfeiting and / or falsification and / or against copying and for the assignment of information encoded therewith to the user and / or the subject by a person easily recognizable. Therefore, a novel, not easily recognizable and hard to falsify security feature to be created.
  • the security feature should preferably be located in a secure counterfeiting and / or falsification and / or copy inner product level.
  • the present invention is also an essential further object to provide a cost-effective, easy and quick to implement security feature. Above all, a complex material development should be eliminated, ie the security feature should be feasible with known substances and devices, such as printers. Furthermore, it should be ensured that a color, in particular multi-colored (colorful), security feature without recalibration of the individual colors and the compression of all colors, which are realized for example by the existing color management for CMYK colors or RGB displays, can be produced.
  • value or security product and in particular the term “value or security document” are mentioned in the description and in the claims of the present application, this includes, for example, a passport, identity card, driving license or another ID card or an access control card , a vehicle registration document, vehicle registration document, visa, check, means of payment, in particular a banknote, a check, bank, credit or cash card, customer card, health card, chip card, company card, proof of entitlement, membership card, gift or shopping voucher, bill of lading or any other Proof of Entitlement, Tax Stamp, Postage Stamp, Ticket, (Game) Token, Sticky Tag (for example, for product backup), or any other ID document.
  • the product may be, for example, a smart card.
  • the security or value document may be in ID 1, ID 2, ID 3, 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 bound together under the influence of heat and under increased pressure (fused). These products should meet the standardized requirements, for example in accordance with ISO 10373, ISO / IEC 7810,
  • values or security product includes, in addition to value or security documents, patches, labels and the like, which are components of documents as security elements and for this purpose are permanently connected to the document carrier and form the security feature there.
  • the valuable or security product may be formed from a polymer selected from a group comprising polycarbonate (PC), in particular bisphenol A polycarbonate, polyethylene terephthalate (PET), derivatives thereof, such as glycol modified PET (PETG), Polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl butyral (PVB), polymethylmethacrylate (PMMA), polyimide (PI), polyvinyl alcohol (PVA), polystyrene (PS), polyvinylphenol (PVP), polypropylene (PP), polyethylene (PE ), thermoplastic elastomers (TPE), in particular thermoplastic polyurethane (TPU), acrylonitrile-butadiene-styrene copolymer (ABS) and derivatives thereof, and / or paper and / or cardboard and / or glass and / or metal and / or ceramic.
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PEN glycol modified PET
  • PEN poly
  • the product can also be made of several of these materials. It preferably consists of PC, PET and / or PVC.
  • the polymers may be either filled or unfilled. In the latter case they are preferably transparent or translucent. If the polymers are filled, they are opaque.
  • 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 document is preferably produced from 3 to 12, preferably 4 to 10, films, preferably with a lamination process in which the films are fused together under pressure and heat.
  • the individual foils can consist of the same material or of different materials. Overlay layers formed in this way protect a security feature arranged underneath and / or give the document the required abrasion resistance.
  • individualized and “individualizing” are used below, this is to be understood as a property of a value or security document according to which the document can be assigned to a specific subject (person, animal, object).
  • personalizing and “personalizing” are used below, this is to be understood as the property of a value or security document according to which the document can be assigned to a person. This property results from predefined security features of the value or security products, preferably from the security pressure according to the invention.
  • the term “luminescence” is called, it is to be understood as fluorescence, phosphorescence and that both with Stokes and anti-Stokes shift. Preferably, this is to be understood as photoluminescence.
  • the luminescence may, for example, also be electroluminescence.
  • die insofar as the term "dye” is used in the description and in the claims of the present application, it is to be understood as a substance or a mixture of substances.
  • the substance or substances show a light absorption in the visible spectral range. They are chemically dissolved in a printing ink in contrast to a color pigment.
  • color pigment Insofar as the term "color pigment” is used in the description and in the claims of the present application, this is to be understood as meaning a substance or a mixture of substances. This substance or these substances show a light absorption in the visible spectral range. In contrast to a dye, they are not chemically soluble in an ink and are present in the form of separate particles. Basic principles of the invention and preferred embodiments:
  • the object underlying the present invention is achieved according to a first aspect by the value or security product according to the invention.
  • the value or security product according to the invention is formed with a product carrier on and / or in which there is a security pressure.
  • the security print is formed with at least two different color impression printing inks (hereafter “colored inks") and with at least one black appearing ink (hereafter “black inks”).
  • at least one of the at least two colored printing inks and the at least one black printing ink each contain an IR (infrared) absorber, while more preferably at least one other of the at least two colored inks and the black ink does not contain an IR absorber.
  • at least one of the black printing inks, most preferably but none of the colored printing inks each contains at least one IR absorber.
  • the object underlying the present invention is also achieved according to a second aspect by a method for producing a precursor formed with a product carrier for the value or security product according to the invention, wherein the security print is located on and / or in the product carrier.
  • This process comprises the following process steps:
  • Provision of a printing material which may preferably be part of the product carrier, by being connected to other parts of the product carrier, for example by laminating a film as a substrate with other films (more preferably connected to the other parts after performing the manufacturing method of the invention), or alternatively as well as the product carrier as a whole;
  • At least one of the at least two colored printing inks and the at least one black printing ink each contain an IR absorber. It is particularly preferred that at least one of the black printing inks, most preferably but none of the colored printing inks, each contains at least one IR absorber.
  • the object underlying the present invention is also achieved according to a third aspect by a first method for verifying the authenticity of the value or security product according to the invention formed with the product carrier.
  • This first verification process comprises the following process steps:
  • two security features are produced in the security print, namely a first security feature of the security print that can be detected in the visible spectral range, for example when viewed under white light (visible Radiation with a largely continuous to the sunlight, largely continuous spectrum with a color temperature of at least 2500 K), and a second security feature of security printing, which is detectable in the IR spectral range.
  • a first security feature of the security print that can be detected in the visible spectral range, for example when viewed under white light (visible Radiation with a largely continuous to the sunlight, largely continuous spectrum with a color temperature of at least 2500 K)
  • a second security feature of security printing which is detectable in the IR spectral range.
  • the first print image detectable with radiation in the visible spectral range can reproduce a person portrait
  • the printable image detectable under IR radiation is formed by a plurality of mutually contrasting surfaces, whereby parts of the person portrait can be recognized in some of these areas.
  • the two print images preferably each code for information, these two information particularly preferably being different and, if appropriate, also being independent of one another.
  • the first printable image of the security print which can be detected in the visible spectral range is characterized by a multicolored representation
  • the second printable image which can be detected in the IR spectral range is characterized by a monochromatic representation corresponding to a shadow image.
  • white light is preferred in order to achieve a natural color rendering.
  • For the capture of the second Print image can be any IR radiation used, monochromatic or polychromatic IR radiation, and in the latter case with any spectral distribution, as long as the IR radiation is at least partially absorbed by the / the IR absorber (s) and therefore a contrast generated in the security print.
  • the present invention provides a complex security feature that is not readily adjustable by a counterfeiter.
  • the detectable in the IR spectral print image of the security pressure can be designed as a watermark. Because the IR absorbers are present in at least one of the printed black and / or colored printing inks, the first printed image also forms in the second printed image. Accordingly, the second printed image is embedded in the first printed image.
  • the security printing can therefore in particular contain two interlaced print images which differ in the IR spectral range with regard to the area division into a plurality of image parts and of which the first is detectable in the visible spectral range and the second in the IR spectral range.
  • the absorption of the at least one IR absorber, which is preferably contained in the printed black portions of the security printing, in the IR spectral range is not visible to the naked eye, so that an adjustment of this security feature would fail even at the knowledge of its existence, if not targeted Check for an IR absorption of the security pressure is performed.
  • the security feature that can be detected in the IR spectral range is therefore hidden in the security feature that can be detected in the visible spectral range and therefore forms a second-level security feature.
  • first stage detection in the visible spectral range
  • second stage detection in the IR spectral range
  • the print image that can be detected in the IR spectral range is also influenced by the first print image that can be detected in the visible spectral range, namely by overlaying the second printed image with the first Printed image is formed:
  • the IR-absorbing image part in which the IR absorbers containing black and / or colored inks are printed, shows the IR absorption only partially, namely in the areas in which the black and / or colored inks with the IR absorbers are located.
  • the first printed image is at least partially detectable under IR viewing conditions.
  • the security printing produced with the colored and black printing inks is formed in a simplest embodiment of the present invention with at least two colored, differing in terms of hue printing inks and a black ink, the latter containing at least one IR absorber.
  • the color management system for controlling the printing operation is set to simulate black parts of the security print in IR transparent image parts by printing the colored inks over each other, while black parts in IR absorbing image parts are simulated with the black ink the IR absorber contains, printed.
  • the IR absorption in the IR-absorbing image parts is detectable, while in the IR-transparent image parts no IR absorption takes place.
  • IR radiation which is absorbed by the IR absorbers can be in the near infrared wavelength range (IR A range: 780 nm to 1400 nm IR B range: 1400 nm to 3000 nm), in the middle infrared wavelength range (3 ⁇ to 50 ⁇ ) and in principle in the far infrared wavelength range (50 ⁇ to 1000 ⁇ ) are. Preference is given to using IR radiation in the near infrared wavelength range and in this case particularly preferably in the IR A range.
  • Dyes and / or color pigments are typically used for the colored printing inks, which alone (as a single substance) or as a mixture of several individual substances have a desired absorption spectrum, so that the desired color effect occurs.
  • Several colored inks are printed to create a security print, for example, three color inks.
  • the inks used in the CMY color system cyan, magenta and yellow are used.
  • conventional color management systems are used with which, starting from these colored basic printing inks, the locally desired shades in the printed image are reproduced by suitable mixing of the basic printing inks.
  • the colored printing inks are printed, for example, in a raster process by targeted placement of printing dots in greater or lesser density and / or by varying the dot size / color quantity, resulting in locally varying color tones and brightnesses.
  • other colored basic printing inks can also be used in other color systems instead of the CMY system.
  • Examples of colored individual substances that can be used to formulate the colored printing inks For example, Cartasol® Yellow K4 GL (trademark of Clariant AG), Cartasol® Red K-3B and Cartasol® Blue K5R are liquid.
  • the colored inks may contain a single one of these substances. Alternatively, several such substances may be included in a mixture.
  • black dyes and / or color pigments for example carbon black
  • the black ink may contain a single one of these substances. Alternatively, several such substances may be included in a mixture.
  • the IR absorbers used can be, for example, the substances specified in EP 1 790 701 A1 (compounds of the transition metals Ti, V, Cr, Mn, Fe, Co, Ni, Cu) in the at least one black and / or colored printing ink.
  • the black and / or colored ink may contain a single one of these substances. Alternatively, several such substances may be included in a mixture.
  • the abovementioned printing inks may contain the at least one IR absorber as a separate constituent.
  • the aforementioned visible components of the printing inks namely the colored and / or black dyes and / or colored and / or black color pigments, may themselves also be IR absorbers.
  • additional IR absorber may be included; but their presence is not required. Therefore, insofar as reference is made above and below to IR absorbers contained in the printing inks, this refers to both IR absorbers as separate components and to the case that the coloring or black components of the printing inks themselves are IR absorbers.
  • the colored and black printing inks contain as base materials usually components of at least one binder, so that the rheological, chemical, reactive, wetting and other properties of the printing inks can be adjusted specifically.
  • the compositions of these inks are well known.
  • Color bases of commercially available colored and black printing inks can be used.
  • oligomers and polymers can be used as the color base.
  • polycarbonate polymers optionally mixed with solvents, are used for this purpose, in particular if the printing substrate / product carrier on which the security printing is made is also formed from a polycarbonate (or optionally polyethylene terephthalate).
  • any printing process can be used. Digital printing methods are preferred, in particular the inkjet printing method, because with this method flexibly varying motifs can be created so that individualizing, in particular personalizing, security prints can be produced. Alternatively, an offset or a flexographic printing process can be used.
  • the security feature can be detected in the visible spectral range, for example by viewing with the naked eye. Alternatively, the security feature in the visible spectral range can also be detected by machine, for example with a recording device, for example a camera. A data processing device may be connected downstream of the recording device and process the printed image recorded by this device.
  • a photoelectric device may be used as the recording device, for example a device typically comprising an imaging optic and a CCD (Charge-Coupled Device) package.
  • the print image of the security print that can be detected in the IR spectral range can only be detected with a recording device since the human eye is insensitive to IR radiation.
  • This recording device must be sensitive to the electromagnetic radiation in the relevant spectral range.
  • the recorded image may then be visualized on a display device, such as a screen, such that a human observer may compare the image to a reference object and check its match with the reference object.
  • a display device such as a screen
  • the security printing is formed with two black printing inks.
  • a first of the two contains black
  • CMYK color system can be generated without incorporation of an IR absorber and the black proportions in an IR-absorbing image portion using the second black ink containing at least one IR absorber.
  • the printed black parts of the security print in the IR-transparent image part are therefore non-absorbent (transparent) when capturing the security print in the IR spectral region, so that the security print in this image part supplies the image information 'IR-transparent' in the IR spectral range.
  • Black parts in the IR-absorbing image part are absorbent (non-transparent) when detecting the security print in the IR spectral region, so that they appear contrasting with the black and / or colored parts of the IR-transparent image part and provide the image information 'IR-absorbing' ,
  • two different types of one of the colored inks may also be used, for example, two types of cyan inks, one containing at least one IR absorber and the other not.
  • the security printable in the visible spectral range is compared with a reference object, for example when the face of the document holder is viewed, when the security print is formed by its person portrait.
  • the security pressure is also compared with a reference object, in this case with a comparison motif, which is specified for the design of the security pressure under IR detection conditions.
  • a one-bit information for authentication can be realized by embedding a generic information in the security printing, such as by dividing the primary subject into two image parts (IR-transparent image part, IR-absorbing image part), which in turn are arranged in the form of a motif, for example in Form of the layout of the value or security product.
  • a generic information in the security printing such as by dividing the primary subject into two image parts (IR-transparent image part, IR-absorbing image part), which in turn are arranged in the form of a motif, for example in Form of the layout of the value or security product.
  • the black components and the color components in the two image parts preferably do not differ from one another and also not when white light is used as the detection radiation of the first printed image. This is due to the fact that the absorption of the black or color gene printing inks with and without IR absorber in the visible spectral range preferably do not differ.
  • the security print can form a print image that can be detected in the IR spectral region, the division of the printed image into at least two image parts encoding multi-bit information.
  • the security printing can be divided into at least two juxtaposed image parts (IR-transparent image part, IR-absorbing image part), in which the respective proportions of the black and / or colored printing ink with a first black and / or colored printing dye, the no Contains IR absorber, or with a second black and / or colored
  • the security printing can be divided into a plurality of fields, for example in grids, most preferably square or rectangular or other area-filling grids that either with the at least one first black and / or colored ink that contains no IR absorber, or with the at least one second black and / or colored
  • Printing ink containing IR absorber printed By a suitable arrangement of the fields a multi-bit information is created, which can be read by detecting the security pressure in the IR spectral range.
  • This information can be stored in the security print, which are not visible to the naked eye. This information may be in plain text or in coded form. It is preferred that personalized information is embedded in the first print image.
  • the security printing may contain, for example, a barcode (barcode, 2D code) which can be read in the IR spectral range.
  • the multi-bit information can be used for individualization, in particular personalization, of the value or security product according to the invention. Accordingly, each value or security product may differ from all the others on this information, for example, personal data or the document itself individualizing data, in particular a serial number. Alternatively, groups of value or security products may also be formed, such as document types, such as the value of a bill or the type of passport, or groups of people. In any case, there is a set of several value or security products, each differentiated by the different multi-bit information encoded by the security print.
  • the security printing is produced with more than one black and / or colored printing ink, for example with two, three or even more black and / or colored printing inks, wherein in all black and / or colored printing inks, preferably up to on one, in each case at least one IR absorber is contained.
  • the IR absorbers in the different black and / or colored inks differ from each other, at least with regard to their chemical identity.
  • the IR absorbers can absorb in different black and / or colored printing inks in different spectral ranges. This makes it possible to provide more print images with information stored in the security print independently of each other. Each of these print images may contain the information in the form of one-bit or multi-bit information, wherein the information stored in the different print images may differ from each other.
  • the security print is additionally formed with at least one printing ink luminescent in the visible spectral range, the at least two colored printing inks absorbing luminescent radiation emanating from the at least one luminescent printing ink.
  • a colored luminescence image is generated which, at least when the luminescent radiation is at least approximately white, has a color distribution which at least approximately corresponds to that which would have been produced solely with the colored printing inks (without luminescent printing inks). If the luminescence radiation is not white but colored, for example because certain spectral components are proportionately stronger than others, the security pressure is reproduced with a corresponding color cast when excited for luminescence. Since the human eye adapts to different color temperatures, however, such a color cast is barely perceived without the possibility of comparison.
  • the colored inks can not filter out luminescent radiation by filtering that is not already present. Therefore, the pattern reproduction in the areas where a color ink has a color in a spectral region in which no luminescent radiation is emitted will appear dark. Due to the luminescence of the printed luminescent printing inks and the spectral filtering of the luminescent light emanating therefrom in the visible spectral range by means of the printed color inks, a desired (more) colored motif can also be rendered multicolored under the verification conditions for luminescent security features. The luminescent image of a motif therefore already results with the aid of the design of a template, in particular a print original, that can be perceived under visible light conditions under conventional lighting conditions.
  • the luminescence radiation is very broadband in the visible spectral range, it is possible to produce virtually white luminescent light. This is achieved by additive color mixing by a plurality of broad-band emitting luminescent substances, but also with a plurality of narrow-band emitting luminescent substances or with a mixture of narrow-band and broad-band emitting luminescent substances.
  • the authenticity of a value or security product designed according to this preferred embodiment of the present invention is verified by detecting the security pressure in the visible spectral range by exciting the at least one luminescent printing ink for luminescence.
  • the luminescence of the luminescent inks can be enhanced by excitation in any luminescent radiation.
  • Spectral range can be generated if the luminescent inks in the spectral range used to absorb the excitation radiation.
  • the luminescence is preferably produced by irradiation with UV (ultraviolet) radiation, particularly preferably with UVA radiation.
  • UV ultraviolet
  • an excitation in the visible or IR spectral range is possible. In the latter case, it is necessary for the differentiation of the IR radiation used for exciting the luminescent printing inks from the absorption of IR radiation by the IR absorbers that the luminescent printing inks and the IR absorbers at least partially absorb in different spectral regions, so that both Phenomena can be observed independently.
  • the luminescent inks and the IR absorbers can be selected so that the former absorb only in the IR A range and therefore are excited to luminescence in this area, while the latter absorb only in the IR B range.
  • a second-level feature is also created with respect to this embodiment of the present invention, so that, with further consideration of the IR absorption by the IR, Absorber in black ink two different second-level features are realized in a security print.
  • the luminescent printing inks may contain as luminescent substances, for example, the rare earth metal-containing substance Lumilux® Green CD 740 (trademark of Honeywell Specialty Chemicals Seelze GmbH) or the substance Paliosecure® Yellow (trademark of BASF SE).
  • the luminescent inks either a single of these substances may be included. Alternatively, several such substances may be included in a mixture.
  • the colored inks contain no IR absorber.
  • the luminescent inks contain no IR absorber.
  • At least one of the colored printing inks is designed to emit no luminescence radiation in the visible spectral range, while at least one further of the colored printing inks luminesces under the excitation conditions for the at least one luminescent printing ink in the visible spectral range.
  • This additional property can be achieved by containing the colored inks in addition to one or more dyes and / or color pigments one or more brighteners that luminesce due to the excitation with electromagnetic radiation, or by having one or more dyes and / or Color pigments is formed, which in addition to the absorption also have luminescent properties.
  • a first black printing ink having at least one black dye and a second black printing ink having at least one black color pigment is formed.
  • the inks containing the black dyes do not contain an IR absorber, while those containing the colored pigments containing ink containing at least one IR absorber.
  • the color pigments themselves may be IR-absorbing.
  • the object underlying the present invention can be achieved according to a fourth aspect by a second method for verifying the authenticity of the value or security product according to the invention.
  • This second verification method comprises the following method steps: (a) detecting the security pressure with a light-optical magnification enabling a differentiation of individual pressure points;
  • the product carrier may be any desired substrate which is suitable as a precursor for the production of the valuable or security product according to the invention.
  • the product carrier can be a polymer film.
  • the product carrier can also be a composite of polymer films which are fused together under the action of pressure and heat (laminated) or are glued together by means of suitable adhesion promoters.
  • the security print on one of the polymer films (the printing substrate) has been printed in this case.
  • the value or security product has final protective lacquer layers or protective films on the outside of the product carrier.
  • polymer films and other film materials such as glass, ceramic, metal, paper and / or cardboard, can be used.
  • the printing substrate / product carrier is produced from polycarbonate films.
  • the printing inks may preferably contain a binder based on polycarbonate.
  • binders are given for example in DE 10 2008 012 423 A1. Therefore, the disclosure of this document relating to the binder with a polycarbonate derivative is incorporated herein by reference.
  • the security pressure is located in one plane in the interior of the product carrier, so that manipulation of the security printing is considerably impeded, in particular if the printing material having security printing on at least one of its surfaces is fused with further films.
  • Such a monolithic composite is nondestructive virtually insoluble.
  • the value or security product may have at least one further security feature which is either individualizing or not individualizing.
  • Other security features include guilloche, watermarks, embossing prints, a security thread, micro-typeface, tipping pictures, transmitted light passer and the like.
  • the document may also contain 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.
  • FIG. 1 shows arrangements for verifying the authenticity of the value and / or security document of Figure 1: (a) under illumination conditions with light in the visible spectral range; (b) under IR illumination conditions; (c) under illumination conditions with UV radiation;
  • FIG. 1 shows schematic sectional views of a printing substrate / product carrier with pressure layers: (a) in a first embodiment; (b) in a second embodiment; (c) in a third embodiment;
  • FIG. 4 shows schematic plan views of the substrate / print carrier with printed layers according to the embodiments of FIG. 4 when illuminated with IR radiation: (a) in the first embodiment; (b) in the second embodiment; (c) in the third embodiment;
  • FIG. 1 shows an arrangement of an inkjet printer with five printheads and a substrate / product carrier with color surfaces in a schematic view; shows representations of a security print: (a) when detected with white light; (b) when detected with IR radiation; (c) when detected with UV radiation;
  • FIG. 1 shows a representation of a security printing with IR-transparent and IR-absorbing image parts in the form of a 2D barcode when detected with IR radiation: (a) first embodiment; (b) second embodiment;
  • FIG. 1 shows a recorded with a microscope section of a security printing according to the invention in a plan view.
  • the value or security document 100 shown in FIG. 1 is an ID card, for example a credit card, which has been produced, for example, by laminating a plurality of product layers of polycarbonate.
  • a value or security document it may be a sticker that can be applied to an object for the purpose of certification of authenticity.
  • This ID card has on its top 101 shown here in information fields 102, 103, 104 various information about the cardholder, including a portrait image of this cardholder in the information fields 103, 104, on. These details constitute personalization information.
  • the portrait image in the information field 103 is formed by a security print 200 according to the invention.
  • the security printing is formed by a printing method such as an inkjet method. In order to be able to reproduce the portrait picture in color, several print extracts have been created and printed on top of each other (not shown). For example, the various print separations can be successively printed on the same surface in one printing pass by an ink jet printing process by means of the required colored inks and a black ink, which are applied by respective printheads of the printer.
  • the inkjet printer D can be equipped, for example, with another printhead which can be used to print another black ink K + with IR. Absorbers is printed. A device suitable for this purpose is shown in FIG.
  • the top side of the card may subsequently have been covered, for example, with an overlay layer of an abrasion-resistant material, for example a PET protective film or a protective lacquer (not shown).
  • an abrasion-resistant material for example a PET protective film or a protective lacquer (not shown).
  • a product carrier 110 is provided on which the security print 200 according to the present invention is printed on one of its outer sides or in an inner plane (FIG. 2).
  • a product carrier having the security print for example, a plurality of material layers 1 1 1, 1 12, 1 13, for example polymer films, particularly preferably polycarbonate films, can be joined together.
  • a lamination process is used in which the films are fused together under pressure and heat application (P, Q).
  • P, Q pressure and heat application
  • the latter is placed on an intermediate see two other outer polymer films 1 1 1, 1 13 arranged middle polymer film 1 12, which forms a substrate for the printing inks produced.
  • the colored and black printing inks are printed in a desired manner on one side of the middle polymer film 11 before it is joined to the outer polymer films 11 1 1, 13.
  • a monolithic composite After bonding the three polymer films by means of a lamination process, a monolithic composite has formed in which the original interfaces between the polymer films are no longer recognizable.
  • the security pressure is located in an internal level in the composite.
  • polymer films and layers of a different material can be used and interconnected.
  • the value or security product 100 is illuminated on the one hand under conventional illumination with a substantially white light source VIS (FIG. 3 a).
  • the portrait image 200 appears colored under these lighting conditions and of course reproduces the image of the document owner.
  • the value or security product is also examined under lighting conditions where it is illuminated exclusively with IR radiation ( Figure 3b).
  • IR radiation Figure 3b
  • UV excitation radiation FIG. 3c
  • the former emits radiation of about 860 nm (near infrared, IR A range).
  • the UV radiation source may emit 365 nm (near UV, UV A) radiation.
  • IR radiation in the IR B range or in the middle or in the far IR range and UV radiation in the middle (UV B) or far (UV C) UV range.
  • suitable radiation sources should be used.
  • a conventional recording device can be used, which is sensitive to this radiation and allows a spatially resolved detection of the printed image.
  • arrangements of an imaging optics and, for example, a CCD device are suitable.
  • a recording device which is sensitive to the incident IR radiation is used, which enables a spatially resolved detection of the scattered radiation.
  • the detection devices are not shown in Fig. 3a, 3b, 3c.
  • the IR absorbers are preferably in one of the black printing inks. In principle, however, they can also be in one or more of the colored printing inks or in one or more colored and one or more black printing inks. For the following explanations of the invention with reference to the figures, it is assumed that one or more IR absorbers are in one of the black printing inks.
  • the IR absorbers in the black printing ink absorb the IR radiation, the radiation is not scattered at the surface areas of the printing substrate / product carrier 10 printed with this printing ink, so that these areas are "darkened” by a suitable detector. These areas represent a contrast to other surface areas in which this printing ink is not located. It is shown in FIG. 3b that a first black ink not containing the IR absorbers is printed in IR transparent image parts 220 and that a first ink is printed second black ink containing the IR absorbers is printed in IR absorbing image parts 230. The IR transparent and the IR absorbing image parts are divided into a total of four fields, which together make up the total area of the security print.
  • the portrait image Upon irradiation with the UV excitation radiation, the portrait image also appears colored under these illumination conditions, namely luminescent, because the luminescent printing ink emits luminescent radiation, which in turn is filtered by the colored printing inks.
  • the security print 200 may be implemented in various embodiments:
  • the motif to be created for example the person portrait of FIG. 1, is printed with a plurality of colored printing inks, for example the printing inks cyan C, magenta M and yellow Y, corresponding to the CM Y color system.
  • Black parts of the subject in this embodiment should not be produced in all print image areas with a black ink, namely not in the IR transparent image parts 220, these proportions in these image parts are simulated by overprinting the three color inks. 4a, three color areas 210, 210 ', 210 "are shown, in which all three color printing inks are printed, so that a dark color tone (more brown than black) appears in these color areas.
  • a black ink namely not in the IR transparent image parts 220
  • Printing inks applied in color dots on the substrate / product carrier To simplify The individual inks are drawn on top of each other. In reality, the printing inks at least partially diffuse into the printing material or spread at least on its surface, so that the different printing inks mix together during printing and do not form separate layers.
  • a black ink K + is additionally printed, in addition to the black dyes / color pigments contained therein, for example Ru ß , also contains at least one IR absorber.
  • an IR transparent image part 220 which is occupied by the right color surface 210 "and the right portion of the central color surface 210 ', no black ink K + is printed.
  • FIG. 5a The top view of this embodiment resulting under illumination with an IR radiation source is shown in FIG. 5a:
  • the ink In the right (first) image part 220 no IR absorption takes place. The ink is therefore overall IR-transparent. In the absence of absorption of the IR radiation, this image part appears "bright", ie the IR radiation is reflected / scattered, whereas the black ink K + in the left (second) image part 230 absorbs the irradiated IR radiation, so that this image part appears "dark” ,
  • the motif to be created for example the person portrait of FIG.
  • a plurality of colored printing inks for example the printing inks cyan C, magenta M and yellow Y, and in the right (IR-transparent) image 220 with a black ink K containing no IR absorber and printed in the left (IR absorbing) image part 230 with the black ink K + containing IR absorbers in accordance with the CMYK color system.
  • a black ink K containing no IR absorber
  • the black ink K + containing IR absorbers in accordance with the CMYK color system.
  • three color areas 210, 210 ', 210 are also shown in this case
  • the individual printing inks are applied with an inkjet printer, for example
  • the top view of this embodiment resulting from illumination with an IR radiation source is shown in Fig.
  • a luminescent printing ink L is printed over the entire area of the printing material / product carrier 110.
  • This printing ink is preferably mixed from a plurality of luminescent substances which luminesce in different regions of the visible spectral range. This produces a virtually white luminescence upon excitation of all these luminescent substances.
  • the motif to be created for example the person portrait of FIG. 1, with a plurality of colored inks, for example the inks cyan C, magenta M and yellow Y, and in the right (IR-transparent) image member 220 with a black ink K.
  • FIG. 5c The top view of this embodiment resulting from illumination with an IR radiation source is shown in FIG. 5c: in the right (IR-transparent) image part 220 there is no IR absorption, since the black printing ink K also contains no IR absorber.
  • the print image is IR transparent overall. In the absence of absorption of the IR radiation, this image part appears "bright", ie the IR radiation is reflected / scattered, whereas the black ink K + in the left (IR-absorbing) image part 230 absorbs the irradiated IR radiation, so that this image part "dark "appears.
  • the two image parts 220, 230 each appear unstructured "light” or “dark".
  • the density of the black inks K, K + in these image parts varies according to the black distribution in the printed motif. If, for example, the person portrait shown in field 103 in FIG. 1 is printed, the distribution of the black printing ink with the color management system used is calculated and set according to the portrait to be printed.
  • a person portrait obtained by viewing with white light VIS which according to the third embodiment according to FIG. 4c is printed by printing inks C, M, Y, black inks K, K + without or with IR absorber and a layer of a luminescent ink L was obtained, shown in Fig. 7a.
  • the reproduction of the person's portrait in the visible spectral range corresponds to the usual photographic reproduction.
  • IR radiation near IR, IR A range: 860 nm
  • Fig. 7b The same security pressure 200, however, when detected with IR radiation (near IR, IR A range: 860 nm) is shown in Fig. 7b.
  • two image parts 220, 230 have been generated, which are each divided into two fields:
  • An IR-transparent image part 220 is with the three color printing inks C, M, Y, the black ink K without IR absorber and the luminescent printing ink is printed so that the two fields thus formed appear "bright", ie these fields do not absorb and scatter the IR radiation, whereas the IR absorbing image part 230 is printed with the three colored inks, the black ink K + with IR.
  • the luminescent printing ink is preferably selected such that it luminesces approximately white under UV excitation in the visible spectral range. This can be achieved by containing a plurality of luminescent substances in the luminescent printing ink L, which have different luminescence spectrums in the visible spectral range, which complement each other to give a white overall luminescence.
  • the colored inks C, M, Y absorb the respective luminescence spectrally selectively, so that the complementary components of the luminescence radiation give the luminescent printed image.
  • the printed image corresponds in terms of the color distribution of the motif, therefore, that obtained when viewed without excitation of the luminescent ink.
  • FIGS. 8a and 8b Further examples of printed images according to the invention, the reproduction of which is obtained under IR illumination, are shown in FIGS. 8a and 8b:
  • the person portrait in both examples is printed in the form of a security print 200 according to the present invention, namely for example with three colored printing inks C, M, Y, two black printing inks K, K + and a luminescent printing ink L.
  • the two black printing inks differ in terms of the Presence of IR absorbers: the black ink K contains no IR absorber, while the black ink K + contains at least one IR absorber.
  • the dye (s) or color pigment (s) in the printing ink K + may / may be IR-absorbing in the IR spectral range. In this case, no further IR absorbers are required in this black ink.
  • the luminescent printing ink is preferably printed over the entire area of the product carrier and, in the case of excitation, for example with UV radiation, emits luminescence in the visible spectral range. This may preferably be at least approximately white.
  • the color components of the personality portrait are printed with the three colored inks.
  • the black portions of the respective person portraits are printed with the two black printing colors, so that non-absorbing (transparent) fields of a first image part 220 and absorbing fields of a second image part 230 result in the IR spectral range.
  • the transparent fields of the first image part are white in the respective representation, since the irradiated IR radiation is completely scattered back and detected by the detection device of the recording device.
  • the absorbing fields of the second image part are black in the respective representation, since the irradiated IR radiation is absorbed more or less strongly by the IR absorbers, depending on the density of the printed black components.
  • the absorbing fields and transparent fields in the case of the example of Fig. 8a, provide a 2D bar code embedded in the primary image capable of storing multi-bit information, such as information about the document owner.
  • the absorbing fields and transparent fields result in a graphic design with symbols that can represent one-bit information if only the presence of these symbols is used as information.
  • these symbols may represent generic information taken from the document layout.
  • the embedded IR print image can serve as a watermark in this case. If, as an additional possibility of variation, the 2D arrangement of these symbols is also taken into account, this security feature likewise represents a multi-bit information with which information can be stored, for example, about the document owner.
  • FIG. 9 shows an enlarged reproduction of a security print 200 obtained by an ink-jet printing method.
  • the security print has been made with multiple color inks, one of the color inks being formed with dyes, while another of the color inks is formed with color pigments. While the inks quickly melt with dyes after impact with the substrate / product carrier (see point B), the inks remain in contact with color pigments at the point of impact and therefore form sharply defined spots (see point A). The pressure points formed by the inks with dyes, however, are out of focus. The use of printing inks with dyes on the one hand and color pigments on the other can therefore be used for forensic verification of the authenticity of a valuable or security product. By determining whether certain inks form sharply defined or blurred spots, it can be determined whether the product is genuine.

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Abstract

L'invention vise à créer une caractéristique de sécurité complexe. À cet effet, un produit de valeur ou de sécurité (100) formé avec un support (110) de produit est fourni, une impression de sécurité (200) se situant sur et/ou dans le support de produit. L'impression de sécurité est formée au moyen d'au moins deux encres d'impression C, M, J faisant apparaître différentes couleurs perçues et d'au moins une encre d'impression N, N+ d'apparence noire. Au moins une des deux encres d'impression ou plus faisant apparaître différentes couleurs perçue et l'encre ou les encres d'impression N+ d'apparence noire contiennent dans chaque cas un absorbeur d'infrarouges.
PCT/EP2017/052196 2016-02-04 2017-02-02 Produit de valeur ou de sécurité, procédé de fabrication d'un produit semi-fini et procédé de vérification WO2017134130A1 (fr)

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EP17703117.6A EP3411245B1 (fr) 2016-02-04 2017-02-02 Produit de valeur ou de sécurité, procédé de fabrication d'un produit semi-fini et procédé de vérification
PL17703117T PL3411245T3 (pl) 2016-02-04 2017-02-02 Produkt wartościowy albo zabezpieczony, sposób wytwarzania półproduktu i sposób weryfikacji
ES17703117T ES2890978T3 (es) 2016-02-04 2017-02-02 Producto de valor o de seguridad, procedimiento para producir un producto semielaborado y procedimiento de verificación

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DE102016201709.8A DE102016201709A1 (de) 2016-02-04 2016-02-04 Wert- oder Sicherheitsprodukt, Verfahren zum Herstellen eines Vorproduktes und Verifikationsverfahren
DE102016201709.8 2016-02-04

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DE102019000149A1 (de) 2019-01-10 2020-07-16 Mühlbauer Gmbh & Co. Kg Sicherheitseinlage für ein Ausweisdokument mit transparentem Fenster
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DE102021004849A1 (de) * 2021-09-24 2023-03-30 Giesecke+Devrient Currency Technology Gmbh Verfahren zum Herstellen eines Substrats mit einem Lumineszenzelement
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