EP3059713B1 - Verfahren zum verifizieren der echtheit eines wert- und/oder sicherheitsdokumentes - Google Patents

Verfahren zum verifizieren der echtheit eines wert- und/oder sicherheitsdokumentes Download PDF

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Publication number
EP3059713B1
EP3059713B1 EP16163882.0A EP16163882A EP3059713B1 EP 3059713 B1 EP3059713 B1 EP 3059713B1 EP 16163882 A EP16163882 A EP 16163882A EP 3059713 B1 EP3059713 B1 EP 3059713B1
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EP
European Patent Office
Prior art keywords
polymer
document
polymers
layer
security
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EP16163882.0A
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German (de)
English (en)
French (fr)
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EP3059713A1 (de
Inventor
Enrico Hahn
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Bundesdruckerei GmbH
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Bundesdruckerei GmbH
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Classifications

    • 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
    • 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
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • 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
    • B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
    • 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
    • B42D25/285—Gift 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
    • B42D25/29—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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • 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
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • B42D2033/30—
    • 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

Definitions

  • the present invention relates to a method according to claim 1 for detecting a valuable and/or security document which comprises at least one document layer.
  • card-shaped data carriers in particular security and/or value documents, can be produced, for example by laminating, from a plurality of individual layers (foils) or can also be designed as a single layer.
  • the material of the individual layers can be, for example, polycarbonate (PC), polyurethane-based thermoplastic (TPU), ABS, polyethylene terephthalate (PET), polyethylene, a composite of PC and TPU or paper, cardboard or fabric or a composite of these materials.
  • the core of the cards can be made of a light-absorbing material, while the outer layers are made of a transparent material.
  • value and/or security documents are, for example, a driver's license, a check or credit card, a company ID card, authorization card or membership card, which are generally provided in the form of a card in ID-1 format, also laminated and made of plastic .
  • Banknotes, cheques, gift and shopping vouchers can also consist, at least in part, of plastics.
  • the documents mentioned each consist of at least one document layer and mostly of more than one document layer. At least some of the document layers of the ID-1 cards mentioned consist entirely or at least partially of plastics.
  • the Inkjet printing layer contains, inter alia, a binder with a polycarbonate derivative based on a geminally disubstituted dihydroxydiphenylcycloalkane, for example based on 4,4'-(3,3,5-trimethylcyclohexane-1,1-diyl)diphenol, 4,4'-(3, 3-dimethylcyclohexane-1,1-diyl)diphenol or 4,4'-(2,4,4-trimethylcyclopentane-1,1-diyl)diphenol.
  • Security features are used to verify the authenticity of these documents.
  • security features are for example in DE 10 2007 015 934 A1 Guilloches, micro-lettering, metameric systems, imprints with fluorescent, phosphorescent and/or up-conversion inks, barcodes, optically variable inks, holograms and kinegrams, digital watermarks, register prints, see-through windows, mottled fibers, security threads and micro-perforations.
  • imprints with infrared ink are specified as a security feature.
  • the security feature in this document is not an all-over print in a color that absorbs infrared light but transmits visible light.
  • the arc comprises at least one component which is sensitive to near-infrared radiation and is detectable quantitatively and/or qualitatively by infrared spectroscopy using a particular calibration.
  • a method for authenticating the sheet is also described.
  • a sheet-shaped document of value which has a machine-readable code, which is formed in particular in the form of a barcode.
  • the barcode can be detectable, for example, in the infrared spectral range.
  • the barcodes can consist of IR-absorbing and luminescent feature substances.
  • An infrared absorbing marker can be essentially colorless in the visible spectral range.
  • the object of the present invention is to provide a method for detecting a value and/or security document that is particularly suitable for verifying the authenticity of the document.
  • the security feature should not be readily recognizable, so that its presence is not normally expected.
  • verification should be possible with simple means.
  • the object is achieved by the method according to claim 1 for detecting, in particular verifying the authenticity of a value and/or security document comprising at least one document layer containing a first polymer.
  • one of the first polymer is in or on at least one document ply different second polymer.
  • the method comprises the following method step: detecting the document by detecting the presence of at least the second polymer by spectral analysis in the infrared range. This does not rule out that for practical reasons, for example to increase the security of the verification, the presence of the first polymer is also detected by spectral analysis in the infrared range.
  • polymer any polymer, “first polymer”, “second polymer”, “further polymers” etc. are used in the description of the present invention and in the claims, this includes not only pure polymers, including copolymers, but also polymer combinations, for example blends (physical polymer mixtures).
  • the second polymer can also differ from the first polymer, inter alia, by a polymer component additionally contained in the second polymer, which is not contained in the first polymer. If the two polymers are otherwise identical, the difference is caused solely by this further mixed-in polymer component.
  • the first and the second polymer and optionally any further polymer are visually indistinguishable from one another, i.e. any additives such as dyes are added equally to both/all polymers.
  • the infrared range used for spectral analysis (wavelength: 800 nm to 1 mm) is in particular the mid-infrared range, in which the vibration modes of the polymers can be detected, i.e. modes in the range of, for example, 4000 cm -1 (wavelength: 2.5 ⁇ m) to 400 cm -1 (wavelength: 25 ⁇ m). Most notably, these vibrational modes are both vibrational modes that capture single bonds (localized vibrations) and skeletal vibrational modes. In addition, a distinction is made between the detection of valence vibrations and deformation vibrations as well as combinations of these two types. Furthermore, harmonics and combination vibrations can also be evaluated.
  • the presence of the second polymer is detected by detecting the presence of an IR band that is characteristic of the second polymer, in particular an IR absorption band.
  • the security feature according to the invention is therefore a so-called "second level” or even "third level” security feature, which consists, on the one hand, of the materials already usually present in a comparable document (first polymer) and, on the other hand, of materials that are different from those already in the Document existing materials are only slightly changed (second polymer). For this reason, the security feature is neither visible nor forgery, but can be detected with a suitable device.
  • a value and/or security document which comprises at least one document layer containing a first polymer, with a second polymer different from the first polymer being located in or on at least one document layer of the document and the the two polymers have different IR absorption spectra, in particular different vibration spectra.
  • Suitable detection devices can be used to detect the document and in particular to determine the presence of one or more characteristic IR bands of at least the second polymer in the document. They are suitable for differentiating the two polymers in the document using infrared spectral analysis.
  • the detection device can be constructed and set up, for example, on the basis of a Fourier transform infrared spectrometer (FTIR) or on the basis of a Raman spectrometer, in order to transmit or reflect, for example ATR (attenuated total reflection). measure up.
  • FTIR Fourier transform infrared spectrometer
  • Raman spectrometer Raman spectrometer
  • such a device comprises in particular an infrared radiation source which is capable of emitting the infrared radiation required for detection.
  • This radiation source can preferably emit infrared radiation in the mid-infrared spectral range.
  • a globar for example, can be used as the radiation source.
  • the emission spectrum of the radiation source must be matched to the range in which the differences in terms of infrared absorption of the first polymer and the second polymer manifest themselves.
  • the detection device includes an infrared sensor, for example a photodiode, a thermal or pyroelectric detector.
  • an optical arrangement based on an interferometer is typically used, which additionally has a suitable holder for the document to be examined.
  • a laser light source is used as the radiation source and a high-resolution monochromator as the dispersive element, as well as a photomultiplier for detection.
  • the optical arrangement must have a holder for the document to be examined.
  • the FTIR measuring device is preferably used when the document layer to be examined, in or on which the second polymer is located, is within a range of a few ⁇ m, for example up to 10 ⁇ m, below the surface of the document, since the for the examination IR radiation used cannot escape from a greater depth and detection is therefore limited to the surface area. If, on the other hand, the second polymer is in or on a document layer that is at a greater distance, for example more than 10 ⁇ m, below the surface, i.e. inside, of the document, the Raman measuring arrangement that works with visible light is selected , so that the excitation radiation and the radiation that is also scattered in the visible spectral range can pass through one or more other document layers. As a result, the information about the presence of the second polymer can also be obtained from the interior of the document.
  • the entire surface of the document can be exposed to the radiation or, alternatively, only part of the surface, so that information about the identity of this partial area is detected only with regard to this part of the surface of the document.
  • the measuring arrangement can work in transmission or by superficial absorption and scattering of the non-absorbed light.
  • a pattern that has been generated with the second polymer can be recorded in a spatially resolved manner, so that the additional information that is encoded in this pattern can be recorded.
  • Imaging optics can be provided for this purpose, or the pattern is detected using a scanning technique, for example by guiding the laser beam of the laser light source required for the Raman spectrometer line by line over the surface containing the pattern and converting the sequentially obtained signal sequence into an image.
  • value and/or security documents are passports, identity cards, driver’s licenses, vehicle registration documents, vehicle registration documents, visas, check cards, credit cards, cheques, banknotes, company ID cards, proof of authorization, membership cards, gift vouchers, shopping vouchers and (game) chips. It is particularly preferred if the value and/or security document corresponds to the ID-1 or ID-2 format according to ISO 7810 or the data page of a document in the ID-3 format according to ISO 7810.
  • the films can consist of the same or different materials, in particular polycarbonate (PC), in particular bisphenol A polycarbonate, polyethylene terephthalate (PET), its derivatives such as glycol-modified PET (PETG), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), Polyvinyl butyral (PVB), polymethyl methacrylate (PMMA), polyimide (PI), polyvinyl alcohol (PVA), polystyrene (PS), polyvinyl phenol (PVP), polypropylene (PP), polyethylene (PE), thermoplastic elastomers (TPE), in particular thermoplastic polyurethane ( TPU), acrylonitrile butadiene styrene (ABS), paper, Teslin ® and their derivatives, coextruded films containing these materials, among others, and hybrid materials, which contain the materials mentioned above, among others.
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PET polyethylene terephthalate
  • PVC
  • Valuable and/or security documents are particularly preferred, which consist at least partially of PC and/or PET and/or PE and/or polymers similar thereto.
  • the foils are laminated under pressure and the action of heat.
  • PC documents are typically produced at 180°C to 210°C and at a pressure of more than 5 bar (maximum 20 bar) within 1 s to 1 hour. Short cycle times are common for single card lamination, long cycle times for stack lamination of multiple copies.
  • the presence of the first polymer is also detected by spectral analysis in the infrared range.
  • the first polymer and the second polymer each contain a first monomer and a second monomer.
  • the respective first monomers of the first and of the second polymer are identical in this embodiment and the respective second monomers of the first and of the second polymer are different.
  • the two polymers are different overall, they also have certain similarities (via the first monomers) so that a user cannot visually perceive the difference without tools.
  • first and second polymers can also be used, of which at least one, for example the second polymer, consists of three, four, five or even more monomers and only one of the monomers, namely the first monomer, in both polymers is identical.
  • the second monomer in the second polymer can also be identical to the second monomer in the first polymer.
  • the first polymer can consist of more than two monomers, namely three, four, five or even more monomers.
  • there are several alternative possibilities namely only the first monomer in both polymers is identical, and the respective second, third and further monomers are different, or the respective first and second monomer in both polymers are identical, and the respective third and further monomers are different etc.
  • first polymer / second term second polymer
  • A,A', B,B', C,C' first, second, third monomer, in addition to the monomer of the first Polymers different monomer of the second polymer, with up to three monomers in the two polymers: 1) AB/AB', 2) AB/AB'C', 3) AB/ABC', 4) ABC/AB'C', 5) ABC/ABC'.
  • each polymer is formed from n 1 (first polymer) or n 2 (second polymer) monomers (n 1 , n 2 are integers), with at least one of the n 1 monomers of the first polymer having one of the n 2 monomers of the second polymer is identical (identity pairs) and the rest are different. Furthermore, it is required that when several pairs of identical monomers occur between the two polymers, at least one monomer in each case of the two polymers does not form an identity pair and these two polymers are therefore different.
  • the document can also contain other polymers which in turn differ from one of the two polymers only in one or a few of the monomers, or which are completely different from the first and second polymer.
  • the first polymer and the second polymer are each polyester.
  • the first monomer is selected from the group comprising terephthalic acid, isophthalic acid, phthalic acid, their derivatives and phosgene.
  • Terephthalic acid, isophthalic acid, phthalic acid or derivatives thereof are used together with a diol to produce polyphthalates, with polyterephthalates using terephthalic acid as the first monomer being particularly preferred.
  • Phosgene as the first monomer is used together with a diol to produce polycarbonates.
  • the second monomers can especially be diols.
  • diols selected from the group comprising 4,4'-dihydroxy-2,2-diphenylpropane, geminally disubstituted dihydroxydiphenylcycloalkanes, their derivatives, ethylene diol and 1,4-bis(hydroxyalkyl)cyclohexane, especially 1, 4-bis(hydroxy(C 1 -C 4 alkyl))cyclohexane and most preferably 1,4-bis(hydroxymethyl)cyclohexane.
  • the first polymer can be, for example, polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • terephthalic acid or a derivative thereof is used as the first monomer and ethylene diol (HO-CH 2 CH 2 -OH) as the second monomer.
  • 1,4-bis(hydroxymethyl)cyclohexane is used as the second monomer instead of ethylene diol.
  • the resulting second polymer is then PETG.
  • the second polymer can also be a copolymer of terephthalic acid with both ethylene diol and 1,4-bis(hydroxymethyl)cyclohexane.
  • the second polymer thus obtained differs from the first polymer to a greater or lesser extent.
  • the first polymer can be polycarbonate (PC).
  • PC polycarbonate
  • phosgene is used as the first monomer and bisphenol A (4,4'-dihydroxy-2,2-diphenylpropane) as the second monomer.
  • bisphenol A 4,4'-dihydroxy-2,2-diphenylpropane
  • a geminally disubstituted dihydroxydiarylcycloalkane in particular dihydroxydiphenylcycloalkane
  • the geminally disubstituted dihydroxydiphenylcycloalkane may be 4,4'-(cyclohexane-1,1-diyl)diphenol or a derivative thereof, e.g.
  • This material is also expressly included as a second polymer in the disclosure content of the present application.
  • the second polymer can also be formed with the additional use of bisphenol A, so that depending on the proportion of bisphenol A in this polymer, IR properties of the second polymer are obtained which are more or less similar to those of the first polymer.
  • the first polymer and the second polymer differ with regard to the degree of crosslinking.
  • This concept of the presence of two only slightly different polymers in the value and/or security document differs from the aforementioned concept in that no different monomers are used for the production of the two polymers, but only by choosing suitable parameters for the polymerization process, the respective structural properties of the first and the second polymer are different.
  • This concept can, of course, also be combined with the previously mentioned concept that in some cases different monomers are used to produce the first and the second polymer.
  • the first polymer and the second polymer are each polyethylene.
  • the first polymer can be PELD (having highly branched polymer chains) and the second polymer can be PEHD (having slightly branched polymer chains).
  • first and the second polymer are each copolymers and the first polymer is, for example, a block copolymer and the second polymer is a random copolymer.
  • first and the second polymer are each copolymers and the first polymer is, for example, a block copolymer and the second polymer is a random copolymer.
  • two polymers which are different from each other, are provided in the document by providing at least one document ply of a first polymer and at least one second polymer being produced in or on the first document ply by in situ modification of the first polymer.
  • the second polymer is formed from the first polymer.
  • the first polymer is converted into a chemically modified species, the second polymer, either over the entire surface or only locally in or on the first document layer by energy input in the presence of additional chemical agents (e.g. oxygen) or without such additional agents.
  • additional chemical agents e.g. oxygen
  • the energy can, for example, be introduced into the material of the first polymer over the entire area or in a locally limited manner by means of a laser. This also makes it possible to form patterns on the surface of the first document layer. Of course, it is also possible to bring about a change in the modification by introducing energy into the first polymer, for example changing the crystallinity of the material. Chemical rearrangements are also conceivable, which lead to chemically modified species, or chemical reactions on functional groups that take place in the presence of suitable chemical agents, such as halogenation via a halogenating agent (e.g. bromine or iodine) that is in contact with the first polymer in the gas phase. and under irradiation with UV light.
  • a halogenating agent e.g. bromine or iodine
  • the polymers used can be mixed with other substances to create suitable dosage forms, for example to form a film or to produce a Ink, e.g. for printing, e.g. screen printing or ink jet printing, or ink for application by other techniques.
  • a Ink e.g. for printing, e.g. screen printing or ink jet printing, or ink for application by other techniques.
  • colorants and fillers for the production of films as well as colorants, fillers, solvents, antifoams, suspending agents, wetting agents, surfactants, flow aids, dryers, catalysts, (light) stabilizers, preservatives, biocides, other organic polymers for viscosity adjustment, buffer systems, etc. for Production of a printing ink are used.
  • the value and/or security document comprises at least a first document layer and a second document layer, the first document layer consisting at least partially of the first polymer and the second document layer at least partially consisting of the second polymer.
  • the first document layer can consist essentially of the first polymer and the second document layer can consist essentially of the second polymer.
  • the first polymer can form a first document ply of the document and the second polymer can form a second document ply of the document.
  • the two document layers of the document consist almost entirely of the respective polymers.
  • the document can comprise an upper outer first document ply made of the first polymer and a lower outer second document ply made of the second polymer.
  • the method can comprise the following method steps: i) optionally detecting the presence of the first polymer of the first document layer and ii) detecting the presence of the second polymer of the second document layer, the first document layer preferably being the upper outer document layer and the second Document layer preferably the lower outer document layer.
  • the first polymer can be a first document layer of the document and the second polymer can be printed or printed on the first document layer or on any other document layer of the document that is accessible for the measurement form an otherwise applied pattern.
  • the pattern can be applied by means of screen printing or ink jet printing.
  • the second polymer in the latter variant can form a pattern embedded in the first document layer or the other document layer of the document, for example produced by filling in depressions. Such depressions can be embossed, for example.
  • the document usually contains further document layers, for example external overlay films if the first and the second document layer are not on the outside, and optionally a carrier layer and other functional document layers.
  • the second polymer can also already be applied to the paper web during the production of the paper for banknotes, for example in the form of strips, but also over the entire surface or in the form of other patterns, such as diamonds, wavy lines, guilloches or the like the second polymer is applied to the banknote paper directly or as part of a printing ink after papermaking during the manufacture of the banknotes.
  • a material consisting essentially of the second polymer is located in the form of a pattern on or in at least one first document ply consisting essentially of the first polymer or the other document ply.
  • the information encoded in the pattern can be a value of the document or an identifier for the owner, for example.
  • the pattern can be formed by any symbols.
  • the pattern can be a one-dimensional or two-dimensional barcode or, for example, can also encode characters either specified in plain writing or in coded form.
  • the disclosed method can comprise the following method steps: i) optionally detecting the presence of the first polymer of the first document layer and ii) detecting the presence of the second polymer of the sample. If the pattern is scanned, for example line by line, the code can be read and the information encoded therein can be recorded.
  • the first polymer can form a first document ply and the second polymer can form a localized area at a defined location of the document on or in the first document ply or on or in another document ply of the document, the second polymer forming the local limited area completely or only partially, for example in the form of a pattern.
  • this can also be realized in that an entire second document layer consists of the second polymer and can only be detected from the outside in a locally limited area via a window that is permeable for IR detection.
  • the second polymer may be present in a different area and therefore cannot be detected using the method according to the invention.
  • combinations of the above variants can also be realized, for example a first document layer made of a first polymer, a second document layer made of a second polymer, a pattern embedded in the first document layer made of the second polymer and/or a pattern embedded in the second document layer the first polymer, one of the two patterns or both being optionally present only at locally limited points of the respective document layer and thus providing further information about the location of the second polymer.
  • a first absorption caused by the first polymer and a second absorption caused by the second polymer are determined.
  • the first and the second absorption are then determined.
  • the first absorption and the second absorption are preferably compared with one another in a fourth method step iv).
  • the respective attenuation of the radiation is determined in the form of the respective extinction values.
  • a characteristic number is formed in method step iii) which results from the first absorption (radiation attenuation) and the second absorption (radiation attenuation), for example the quotient of the first absorption and the second absorption. This number indicates whether the second polymer is actually present and whether the document is authentic or not.
  • the absorption of the second polymer in the document can be recorded.
  • the presence of the second polymer is indicated by an extinction in a suitable wavelength or wave number range.
  • the shift of an IR band can also be detected in order to determine whether the second polymer is present in the document.
  • the document 1 shows a detection device based on an FTIR measurement arrangement.
  • the document is denoted by 1. It is held by a document holder 2.
  • the document holder 2 has an opening at the bottom so that measurement radiation can reach the document 1 from below.
  • a radiation source 4 emits IR radiation in the medium frequency range. This radiation is first passed through an optical arrangement (Michelson interferometer) through a beam splitter 5 and arrives a fixed mirror 6. At the same time, radiation also reaches a movable mirror 7 via the beam splitter 5. The radiation from both radiation paths is then directed via a further mirror 8 onto the document 1.
  • the scattered radiation is recorded in the detector 3 and in a downstream evaluation system (not shown).
  • a document 10 with a first document layer 11 made of a first polymer (polycarbonate based on bisphenol A) is shown.
  • This document layer is one of several document layers in the document. It is on the surface of the document.
  • an FTIR measuring arrangement is used.
  • a barcode 12 is applied to the first document layer 11, which barcode has been printed with an ink which contains a second polymer which differs from the first polymer only with regard to the modification of the bisphenol A used.
  • This barcode 12 is practically invisible to the naked eye because both polymers look identical.
  • the difference between the two polymers can be detected with the FTIR measurement setup.
  • the barcode 12 is scanned line by line, so that on the one hand the information encoded in the barcode 12 can be recorded.
  • the fact that the IR absorption in the area of the barcode strips differs from that between the strips is used for this purpose.
  • the identity of the two polymers is recorded.
  • PC1 and PC2 are polycarbonate materials based on cyclohexane modified bisphenol A.
  • Its size is a measure of whether the second polymer is present or not.
  • the corresponding spectra are determined on real documents and reference quotients are thus formed.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Finance (AREA)
  • Electromagnetism (AREA)
  • Accounting & Taxation (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
EP16163882.0A 2010-10-05 2011-09-19 Verfahren zum verifizieren der echtheit eines wert- und/oder sicherheitsdokumentes Active EP3059713B1 (de)

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DE102010041975A DE102010041975A1 (de) 2010-10-05 2010-10-05 Verfahren zum Erfassen eines Wert- und/oder Sicherheitsdokuments
PCT/EP2011/066197 WO2012045567A1 (de) 2010-10-05 2011-09-19 Verfahren zum erfassen eines wert- und/oder sicherheitsdokumentes
EP11757871.6A EP2625672B1 (de) 2010-10-05 2011-09-19 Verfahren zum erfassen eines wert- und/oder sicherheitsdokumentes

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AT335205B (de) * 1972-05-03 1977-02-25 Int Security Systems Sa Einrichtung zur uberprufung von wertpapieren
DE10049404C2 (de) * 2000-10-05 2003-01-30 Fraunhofer Ges Forschung Mit einem NIR-Marker versehener kunststoff-, glas-, textil- oder papierhaltiger Werkstoff und Verfahren zur Identifizierung dieses Werkstoffs
US7122248B2 (en) * 2001-02-21 2006-10-17 Honeywell International Inc. Security articles
EP1403333A1 (en) * 2002-09-24 2004-03-31 Sicpa Holding S.A. Method and ink sets for marking and authenticating articles
EP1452338A1 (en) * 2003-02-28 2004-09-01 Eidgenössische Technische Hochschule (ETH) Patterned dichroic security features
FR2860325B1 (fr) * 2003-09-29 2006-01-13 Arjo Wiggins Secutity Sas Feuille authentifiable par spectroscopie proche infrarouge et methode d'authentification
US7744002B2 (en) * 2004-03-11 2010-06-29 L-1 Secure Credentialing, Inc. Tamper evident adhesive and identification document including same
US7597961B2 (en) * 2004-07-13 2009-10-06 Sabic Innovative Plastics Ip B.V. Authenticatable article and method of authenticating
DE102005032704A1 (de) 2005-07-13 2007-01-25 Giesecke & Devrient Gmbh Wertdokumente, Herrstellung und Prüfung von Wertdokumenten
US20070071951A1 (en) * 2005-09-29 2007-03-29 James Grande Authenticatable plastic material, articles, and methods for their fabrication
US20080274028A1 (en) * 2005-10-03 2008-11-06 Hai Hui Lin Security pigments and the process of making thereof
KR20080078356A (ko) * 2007-02-23 2008-08-27 주식회사 엘지화학 블록 공중합체의 제조방법
DE102007015934B4 (de) 2007-04-02 2021-04-01 Bundesdruckerei Gmbh Dokument mit einem Sicherheitsmerkmal, Lesegerät und Verfahren zum Lesen eines Sicherheitsmerkmals
DE602008003359D1 (de) * 2007-07-26 2010-12-23 Toshiba Kk Bilderzeugungsverfahren und persönliches Authentifizierungsmedium damit
DE102007052947A1 (de) 2007-10-31 2009-05-07 Bayer Materialscience Ag Verfahren zur Herstellung eines Polycarbonat-Schichtverbundes
DE102007052949A1 (de) * 2007-10-31 2009-05-07 Bayer Materialscience Ag Verfahren zur Herstellung eines Polycarbonat-Schichtverbundes
DE102008008044B4 (de) 2008-02-05 2022-09-22 Bundesdruckerei Gmbh Verfahren zum Prägen von Oberflächenstrukturen in einem Substrat zur Herstellung eines kartenförmigen Datenträgers

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CN103250188A (zh) 2013-08-14
WO2012045567A1 (de) 2012-04-12
EP2625672A1 (de) 2013-08-14
EP2625672B1 (de) 2016-04-06
AU2011313503B2 (en) 2015-05-07
AU2011313503A1 (en) 2013-04-18
CN103250188B (zh) 2016-11-09
EP3059713A1 (de) 2016-08-24
DE102010041975A1 (de) 2012-04-05

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