EP1691989B1 - Support de donnees et procede pour le produire - Google Patents

Support de donnees et procede pour le produire Download PDF

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Publication number
EP1691989B1
EP1691989B1 EP04797920A EP04797920A EP1691989B1 EP 1691989 B1 EP1691989 B1 EP 1691989B1 EP 04797920 A EP04797920 A EP 04797920A EP 04797920 A EP04797920 A EP 04797920A EP 1691989 B1 EP1691989 B1 EP 1691989B1
Authority
EP
European Patent Office
Prior art keywords
security element
metal layer
identifiers
coating layers
data carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP04797920A
Other languages
German (de)
English (en)
Other versions
EP1691989A1 (fr
Inventor
Günter Endres
Georg Kruse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and Devrient GmbH
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 Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP1691989A1 publication Critical patent/EP1691989A1/fr
Application granted granted Critical
Publication of EP1691989B1 publication Critical patent/EP1691989B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • 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
    • B42D25/29—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
    • B42D25/333—Watermarks
    • 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
    • B42D25/373—Metallic materials
    • 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles

Definitions

  • the invention relates to a multilayer security element with a metal layer into which markings in the form of patterns, letters, numbers and / or images are introduced by a laser beam.
  • the invention further relates to a method for producing such a security element as well as a data carrier which is equipped with such a security element.
  • ID cards such as credit cards, bank cards or identity cards
  • laser engraving the optical properties of the card material in the form of a desired marking are irreversibly changed by suitable guidance of a laser beam.
  • personalization data is often placed in metallic layers against a dark background. Since the metallic background leads to a directed reflection of the incident light rays and the detector in copying machines is usually arranged so that it can only detect the light scattered diffusely by the original, the metallic surfaces appear like the introduced markings in the copy throughout black.
  • the object of the invention is to provide a security element for data carriers, in particular for value documents, such as an identification card, a banknote or the like, which is provided with identifications in the form of patterns, letters, numbers and / or images, and at the same time provides high quality protection against photographic or xerographic reproduction.
  • the security element according to the invention is based on the prior art in that the metal layer is arranged between two translucent cover layers whose light transmittance in the visible spectral range is less than 10%, whereby the markings in the metal layer show a watermark effect, when viewed in transmitted light in Positive representation and when viewed in incident light in negative representation appear.
  • transparency denotes the full transparency of a material
  • translucent means translucent in the sense of a certain translucency, but unlike transparent materials, objects located behind translucent materials are not or only diffusely recognizable
  • opaque denotes the Opacity of a material
  • the introduced gaps in the metal layer appear bright in transmitted light, while the remaining metal layer areas appear dark. This appearance is referred to herein as a positive representation of the markings. In reflected light, however, the gaps in the metal layer appear darker than the metal layer areas, so that the image impression is reversed to a negative image. This reversal corresponds to the classical watermark effect in paper and is therefore also referred to as a watermark effect, even if the production is fundamentally different compared to the watermark in the paper.
  • the light transmittance of the cover layers is preferably to be optimized so that a good contrast of the areas modified by laser radiation is achieved relative to the unirradiated areas.
  • the light transmittance of the translucent cover layers in the visible spectral range is less than 10%, preferably less than 5%.
  • the translucent cover layers may be colored and appear white or pastel-colored, especially in reflected light.
  • the introduction of the markings into the metal layer can advantageously take place via a local material removal in the metal layer or via a local conversion of the metal into a transparent or translucent modification.
  • the metal layer is preferably an aluminum, copper or gold layer.
  • the metal layer has a thickness of about 5 to 10 microns.
  • the cover layers are preferably layers of paper, PVC, polyester, PC or compounds thereof. The layer thickness of the cover layer preferably varies between about 100 and 250 ⁇ m.
  • the translucent cover layers are chosen so that they have no appreciable absorption at the wavelength of the laser radiation used for the marking.
  • the laser wavelength is expediently chosen in the infrared spectral range, for example at about 1.06 ⁇ m (Nd: YAG laser or Nd: glass laser) or at about 10.6 ⁇ m (CO 2 laser).
  • Nd YAG laser or Nd: glass laser
  • CO 2 laser 10.6 ⁇ m
  • the person skilled in a variety of materials are available, on the one hand for data carriers, such as identity cards, are suitable and on the other hand connect the required translucency in the visible spectral range with the low absorption at the laser wavelength.
  • the markings may include personal data, such as a signature, a date of birth, a portrait or the like, and / or data-related data such as a serial number, a period of validity, information on the issuing authority or institution or the like.
  • Rasterized markings are particularly suitable for laser marking, wherein the halftone dots can be generated in a simple manner by pulsed laser irradiation.
  • the metal layer is vapor-deposited or printed on one of the translucent cover layers.
  • the metal layer can be vapor-deposited or printed on a transparent intermediate layer arranged between the translucent cover layers.
  • one or preferably both of the translucent cover layers is provided with a protective layer, which is transparent at least in the region of the markings.
  • the invention also includes a data carrier, in particular a value document, such as a banknote, an identity card or the like, which is equipped with a security element of the type described above.
  • the security element can be embedded in the interior of the data carrier and thus be part of the data carrier itself, or it can be subsequently applied to the surface of the data carrier, for example, glued. In the latter case, it is expedient if the data carrier is transparent or translucent in the area of the markings of the security element.
  • the security element can also be arranged over an opening of the data carrier, for example a punched out hole of a banknote. It is also conceivable that the disk itself consists of two layers of paper with intermediate metal layer.
  • the data carrier can be provided with one or more further security features, in particular with luminescent, magnetic or electrical substances, or with optically variable structures, such as holographic structures.
  • a metal layer with two translucent Cover layers combined so that it lies between the two cover layers, and then applied to the layer sequence with a laser beam to introduce labels in the form of patterns, letters, numbers and / or images in the metal layer.
  • the markings are preferably introduced with pulsed laser radiation, in particular in the infrared spectral range.
  • the wavelength of the laser radiation and the material of the translucent cover layers are expediently coordinated so that the laser radiation is strongly absorbed by the metal layer and substantially not absorbed by the translucent cover layers.
  • Fig. 1 shows a schematic representation of a plan view of an identity card 10, which contains a security element 12 according to the invention.
  • the security element 12 is part of the card body 14 of the ID card 10.
  • Fig. 2 shows a cross section through the badge 10 in the region of the security element 12 along the line II-II of Fig.1
  • the security element may also be a separately manufactured element, which is applied to a data carrier, such as the card body 14, for example, glued.
  • the security element 12 contains a metal layer 20 into which markings 16, in the present case in the form of the letter sequence "AB", are introduced by means of a laser beam.
  • the ID card contains 10 more personal or non-personal data 18, which may be applied to the card in any suitable method.
  • the data 16 and 18 include, for example, the name, date of birth, nationality or portrait of the holder, issuing authority or issuing institution, issue date, and the like.
  • the security element 12 includes an upper and a lower translucent cover layer 26 and 28, which are each covered and protected by a transparent plastic film 30 or 32.
  • the translucent cover layers 26 and 28 consist in the embodiment of white-colored polycarbonate films of a thickness of about 150 microns. While such films are often referred to as being opaque in other contexts, it is important in the present invention that the films are not completely opaque, but transmit some, albeit small, amount of light when illuminated from the back of the card. Corresponding they are referred to in this description as translucent, so translucent.
  • the card is subjected to laser pulses of an infrared laser, for example a Nd; YAG laser with a wavelength of 1.064 ⁇ m.
  • an infrared laser for example a Nd; YAG laser with a wavelength of 1.064 ⁇ m.
  • the plastic films 30 and 32 and the white polycarbonate films 26 and 28 have a negligible absorption for the infrared radiation and are not changed by the laser radiation.
  • the metal layer 20 absorbs the laser radiation so strongly that the deposited energy causes a local change of state in the metal layer.
  • This change of state in the metal layer 20 may, for example, consist in a partial or complete local removal of the metal layer or in a local transformation of the metal layer into a transparent or translucent modification.
  • FIG Fig. 3 Another embodiment of a security element 40 according to the invention is shown in FIG Fig. 3 shown.
  • the security element 40 has a transparent polycarbonate film 42 of a thickness of about 100 ⁇ m, onto which a thin metal layer 44, for example an aluminum, copper, gold layer, has been vapor-deposited.
  • the coated polycarbonate film 42 is embedded between two translucent cover films 46 and 48, each consisting of a transparent polyester film 50 and 52 and printed layers 54 and 56 applied thereon. Over the cover sheets 46 and 48, further transparent polyester films 58 and 60 are arranged for protection.
  • the translucency of the coversheets 46 and 48 is achieved in this embodiment by the print layers 54 and 56 and can be adjusted as required by the degree of coverage of the ink and the thickness of the print layer in a wide range.
  • the inks are chosen so that the print layers are substantially transparent to the laser radiation used for marking.
  • the metal layer 44 of the security element 40 is provided with markings as described above, thereby producing a watermark effect in the data carrier equipped with the security element.

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  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Accounting & Taxation (AREA)
  • Business, Economics & Management (AREA)
  • Finance (AREA)
  • Optics & Photonics (AREA)
  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Multi-Process Working Machines And Systems (AREA)

Claims (18)

  1. Elément de sécurité multicouche (12), comportant une couche métallique dans laquelle des éléments d'identification, sous forme de motifs, de lettres, de chiffres et/ou d'images, sont incorporés à l'aide d'un faisceau laser, caractérisé en ce que la couche métallique est disposée entre deux couches de couverture translucides, dont la transparence dans la plage visible du spectre est inférieure à 10%, ce en conséquence de quoi les éléments d'identification (16) se trouvant dans la couche métallique (20) présentent un effet de filigrane, grâce auquel ils apparaissent en positif quand on regarde par transmission, et en négatif quand on regarde par réflexion.
  2. Elément de sécurité (12) selon la revendication 1, caractérisé en ce que la transparence des couches de couverture translucides dans la plage visible du spectre est inférieure à 5 %.
  3. Elément de sécurité (12) selon la revendication 1 ou 2, caractérisé en ce que les couches de couverture translucides sont colorées, et en particulier en lumière réfléchie apparaissent en blanc ou en couleur pastel.
  4. Elément de sécurité (12) selon au moins l'une des revendications 1 à 3, caractérisé en ce que l'incorporation des éléments d'identification (16) est effectuée par enlèvement de matière dans la couche métallique (20).
  5. Elément de sécurité (12) selon au moins l'une des revendications 1 à 4, caractérisé en ce que l'incorporation des éléments d'identification (16) s'effectue par une conversion locale du métal en une variété transparente ou translucide.
  6. Elément de sécurité (12) selon au moins l'une des revendications 1 à 5, caractérisé en ce que les couches de couverture translucides ne présentent aucune absorption significative à la longueur d'onde du rayonnement laser utilisé pour l'élément d'identification (16).
  7. Elément de sécurité (12) selon au moins l'une des revendications 1 à 6, caractérisé en ce que les éléments d'identification (16) comprennent des données personnelles telles qu'une signature, une date de naissance, un portrait ou analogues.
  8. Elément de sécurité (12) selon au moins l'une des revendications 1 à 7, caractérisé en ce que les éléments d'identification comprennent des données relatives au support de données, telles qu'un numéro de série, une durée de validité ou analogues.
  9. Elément de sécurité (12) selon au moins l'une des revendications 1 à 8, caractérisé en ce que les éléments d'identification se présentent sous forme tramée.
  10. Elément de sécurité (12) selon au moins l'une des revendications 1 à 9, caractérisé en ce que la couche métallique (20) est appliquée par évaporation sous vide ou par impression sur l'une des couches de couverture translucides.
  11. Elément de sécurité (12) selon au moins l'une des revendications 1 à 10, caractérisé en ce que la couche métallique (20) est appliquée par évaporation sous vide ou par impression sur une couche intermédiaire transparente, disposée entre les couches de couverture translucides.
  12. Elément de sécurité (12) selon au moins l'une des revendications 1 à 11, caractérisé en ce que l'une des couches de couverture translucides, ou les deux, sont pourvues d'au moins une couche de protection transparente dans la zone des éléments d'identification (16).
  13. Support de données, en particulier document de valeur, tel qu'un billet de banque, une carte d'identité ou analogues, comportant un élément de sécurité (12) selon l'une des revendications 1 à 12.
  14. Support de données selon la revendication 13, caractérisé en ce que l'élément de sécurité est noyé dans le volume intérieur du support de données, ou est appliqué sur la surface du support de données.
  15. Support de données selon la revendication 13 ou 14, caractérisé en ce que le support de données est pourvu d'une ou plusieurs autres caractéristiques de sécurité, en particulier de substances luminescentes, magnétiques ou électriques, ou de structures optiquement variables, telles que des structures holographiques.
  16. Procédé de fabrication d'un élément de sécurité (12) selon au moins l'une des revendications 1 à 12, dans lequel
    - on combine une couche métallique (20) à deux couches de couverture translucides, dont la transparence est inférieure à 10% dans la plage visible du spectre, de façon qu'elle se trouve entre les deux couches de couverture, et
    - on expose ensuite la séquence de couches à un faisceau laser, pour incorporer dans la couche métallique des éléments d'identification (16) sous forme de motifs, de lettres, de chiffres et/ou d'images.
  17. Procédé selon la revendication 16, caractérisé en ce que les éléments d'identification (16) sont incorporés à l'aide d'un rayonnement laser pulsé, en particulier dans la plage infrarouge du spectre.
  18. Procédé selon la revendication 16 ou 17, caractérisé en ce que la longueur d'onde du rayonnement laser et le matériau des couches de couverture translucides sont adaptés l'un à l'autre de telle sorte que le rayonnement laser soit fortement absorbé par la couche métallique (20) et ne soit pour l'essentiel pas absorbé par les couches de couverture translucides.
EP04797920A 2003-12-02 2004-11-16 Support de donnees et procede pour le produire Not-in-force EP1691989B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10356146A DE10356146A1 (de) 2003-12-02 2003-12-02 Datenträger und Verfahren zu seiner Herstellung
PCT/EP2004/012968 WO2005053968A1 (fr) 2003-12-02 2004-11-16 Support de donnees et procede pour le produire

Publications (2)

Publication Number Publication Date
EP1691989A1 EP1691989A1 (fr) 2006-08-23
EP1691989B1 true EP1691989B1 (fr) 2009-02-11

Family

ID=34625460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04797920A Not-in-force EP1691989B1 (fr) 2003-12-02 2004-11-16 Support de donnees et procede pour le produire

Country Status (6)

Country Link
US (1) US20070085337A1 (fr)
EP (1) EP1691989B1 (fr)
JP (1) JP4658958B2 (fr)
AT (1) ATE422425T1 (fr)
DE (2) DE10356146A1 (fr)
WO (1) WO2005053968A1 (fr)

Cited By (1)

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WO2012097463A1 (fr) 2011-01-18 2012-07-26 Trüb AG Procédé de fabrication d'un support de données multicouche et support de données fabriqué selon ledit procédé

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EP2756963A1 (fr) 2011-01-18 2014-07-23 Trüb AG Procédé de fabrication d'un support de données multicouches et support de données fabriqué selon ledit procédé

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DE502004008987D1 (de) 2009-03-26
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EP1691989A1 (fr) 2006-08-23
DE10356146A1 (de) 2005-06-30
WO2005053968A1 (fr) 2005-06-16
JP4658958B2 (ja) 2011-03-23

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