EP1697146B1 - Support de donnees pourvu d'identifications inscrites au moyen d'un faisceau laser et procede de fabrication dudit support - Google Patents

Support de donnees pourvu d'identifications inscrites au moyen d'un faisceau laser et procede de fabrication dudit support Download PDF

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Publication number
EP1697146B1
EP1697146B1 EP04803402A EP04803402A EP1697146B1 EP 1697146 B1 EP1697146 B1 EP 1697146B1 EP 04803402 A EP04803402 A EP 04803402A EP 04803402 A EP04803402 A EP 04803402A EP 1697146 B1 EP1697146 B1 EP 1697146B1
Authority
EP
European Patent Office
Prior art keywords
data carrier
identifiers
recording layer
carrier according
transparent
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.)
Revoked
Application number
EP04803402A
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German (de)
English (en)
Other versions
EP1697146A2 (fr
Inventor
Matthias Bergmann
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 Mobile Security 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
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Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP1697146A2 publication Critical patent/EP1697146A2/fr
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Revoked legal-status Critical Current
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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
    • 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
    • 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
    • B42D2033/24—

Definitions

  • the invention relates to a data carrier, in which by a laser beam markings in the form of patterns, letters, numbers and / or images are introduced, which are visible due to caused by the laser beam, resulting from material changes local changes in the optical properties of the disk.
  • Data carriers such as identification cards, credit cards, bank cards and the like are increasingly used in various service sectors, but also in the in-house area. They usually have to meet two opposing conditions. Because of their widespread use, they are a mass-produced product that should be simple and inexpensive to produce. On the other hand, they should offer the greatest possible security against counterfeiting or falsification due to their legitimacy function. The variety of types of ID cards available is testimony to the numerous efforts and various suggestions as to how these conflicting requirements can be properly linked.
  • a multi-layered ID card which is equipped with a plastic sheet as a recording medium.
  • the plastic film appears completely transparent in the visible wavelength range, but absorbs so strongly at the wavelength of an infrared laser used for writing information that localized blackening of the film results due to the action of the laser beam. This allows images and / or data to be written in the plastic film with a good resolution.
  • Another difficulty is that the visual inspection of a hologram requires good light conditions. Even in the diffuse room lighting prevalent in banks, shops or businesses, the holographic effects are often difficult or impossible to recognize. Even with so-called decorative materials can be reflective or metallic easily iridescent surfaces are generated, so that the structures formed by such decorative materials can be confused by laymen under unfavorable lighting conditions with real holograms.
  • the object of the invention is to expand the visual design options of a laser-printed data carrier, and in particular to introduce photographic or xerographic features that are not reproducible, which can be recognized even in unfavorable lighting conditions.
  • a generic data carrier comprises a transparent in the visible spectral range, laser-sensitive recording layer, which is provided with a surface relief in the form of a lenticular grid.
  • the markings are introduced with the laser beam from different directions through the lens grid in the recording layer and seen from the same directions when viewed. At least in the area of the introduced markings, the data carrier is transparent. This feature combination combines a visually appealing design of the data carrier with high security against counterfeiting.
  • the labels are introduced through the lenticular array into the underlying recording layer.
  • the laser beam is held at different, predetermined angles to the plane of the lens grid, so that when passing the laser radiation through the lenses different Modified areas of the recording layer are usually blackened.
  • the labels introduced in this way are essentially only recognizable from the angle at which they were introduced.
  • the size of the angular range under which a mark is visible depends on the size of the modified area, and can be adjusted, for example, via the pulse energy of the laser beam.
  • the data carrier can be provided with two or more different markings, which can not be reproduced photographically or xerographically, since from a certain viewing angle, the entire written information is never recognizable.
  • the markings visible on account of the local changes in the optical properties of the data carrier are optionally additionally or exclusively detectable in transmitted light, i. regardless of viewing from the front or back or only when viewing from one side.
  • the laser beam can also cause, for example, a local change in the refractive index or a change in the polarization direction of the transparent recording layer, so that the inscribed marking in reflected light, ie when viewed from the front (lens) side is virtually invisible.
  • visually appealing authenticity features can be introduced into data carriers which, together with the preferably specific information content, give it a high degree of protection against counterfeiting.
  • the lens grid comprises cylindrical lenses and / or spherical lenses.
  • the axis of the cylindrical lenses can be straight or curved, parallel or at a certain angle to the outer edges of the disk.
  • the recording layer may be part of a transparent main body of the data carrier or may alternatively be formed by a separate layer.
  • the recording layer is formed according to a development of the invention by a non-self-supporting layer of a thickness particularly preferably from about 1 micron to about 50 microns, for example, at least partially doped plastic film of polycarbonate or polyester.
  • the recording layer is preferably arranged in the interior of the data carrier.
  • the thickness of the layer depends inter alia on the material, the lens geometry and the type of application and preferably varies between 1 and 800 ⁇ m.
  • the layer may consist of PVC, PC, polyester and compounds thereof.
  • the markings may include personal data, such as a signature, a date of birth, a portrait or the like, but also or additionally data carrier-related data, such as a period of validity, a card number, information on the issuing authority or institute or the like.
  • Rasterized markings are particularly suitable for the laser marking, wherein the raster elements are preferably formed by rod-shaped pixels. The individual raster elements can then be generated in a controlled manner by pulsed irradiation of the recording layer, for example with an Nd: YAG laser, a Nd: glass laser or else a longer-wavelength CO 2 laser.
  • the markings which can be recognized from different directions are expediently nested in one another in the recording layer.
  • the Separation of the information content takes place when viewing the data carrier from the viewing directions corresponding to the recording directions, since the lens grid shows the observer only the part of the markings associated with the viewing direction. This makes a technical reproduction of the written information practically impossible, since an exact alignment with a later applied lenticular does not succeed with the required accuracy.
  • the recording layer and the lenticular grid are arranged in or on a transparent main body of the data carrier.
  • the data carrier may of course have further black-and-white or colored imprints and / or further laser inscriptions.
  • the data carrier can also be provided with one or more further security features, in particular luminescent, magnetic or electrical substances, or optically variable structures, such as holographic structures.
  • the transparent recording layer is integrated as an implant or part of a transparent implant in the main body.
  • it makes sense to physically link the implant to the main body.
  • This is possible for example by a lenticular grid which is larger than the transparent implant and at least partially overlaps the implant and the main body.
  • the implant and the main body each have a recording layer which adjoin one another, for example, so that the implant and card body are inseparably connected to one and the same personalization, eg an image.
  • the data carrier preferably represents a value document, such as a banknote, an identity card or the like.
  • the data carrier represents a security element for application to a value document, such as a banknote, an identity card or the like.
  • the invention also includes a value document, such as a banknote, identity card or the like, having a value document substrate with a window area or hole covered on one side or on both sides with a security element of said type. Since the security element according to the invention is transparent, the registered markings can be read through the window area or the hole of the security in transmitted light.
  • a value document such as a banknote, identity card or the like
  • the laser sensitive recording layer transparent to the visible spectral region is first provided with the surface relief in the form of a lenticular array, and subsequently in a transparent region of the data carrier the markings with the laser beam are transmitted from different directions through the lenticular image into the recording layer brought in, so that the markings in the subsequent viewing of the disk from the same directions are recognizable.
  • the markings are preferably introduced in a raster method, wherein the raster elements are preferably formed by rod-shaped pixels. Pulsed laser radiation is particularly well suited for the production of such raster elements.
  • Fig. 1 shows a plan view of a transparent ID card 10 according to the invention in a schematic representation.
  • the ID card 10 contains a portrait 12 of the cardholder and other personal data 14, in Embodiment the first and last name of the owner.
  • the badge may include other data 16, such as date of birth, nationality, issuing authority, issue date, and the like.
  • a laser tipping image is arranged which contains two different information inscribed by means of a laser beam, in the exemplary embodiment the signature of the holder 20 and the validity date of the card 22.
  • the two information 20 and 22 are, unlike the graphic representation of the Fig.1 , when viewing the ID card 10 not simultaneously, but only by tilting the card 10 in a different tilt angle recognizable.
  • the badge 10 includes a transparent card body 24 and a transparent in the visible spectral range, laser-sensitive recording layer 26.
  • the recording layer 26 may be a portion of the card body 24 or a separate layer.
  • the recording layer 26 is provided with a surface relief in the form of a lenticular grid 28, which in the exemplary embodiment consists of a plurality of parallel cylindrical lenses.
  • the personal information 20 and 22 introduced into the laser tipping image are written into the recording layer 26 only after the lens grid 28 has been applied by means of a pulsed infrared laser.
  • the laser beam is directed from different directions 30 and 32 to the lens grid 28.
  • the individual cylindrical lenses focus the laser beam depending on the direction of irradiation on different small subregions 34 and 36 of the recording layer.
  • the effect of the laser radiation locally changes the optical properties of the recording layer 26, for example the layer is locally blackened.
  • the blackened portions 34 are visible because of the focusing effect of the cylindrical lenses, which are composed for the viewer to an image, in the embodiment of the inscribed signature 20.
  • the partial regions 36 inscribed in this direction can be recognized from the viewing direction 32 and are combined to form an image of the validity date 22 for the viewer.
  • the badge 10 may have additional layers, for example one or more protective layers or functional layers provided with other security elements. In this case, only the transparency of the data carrier 10 in the area of the registered identifications 20, 22 must be retained. These further layers are not essential to the present invention and are therefore neither described nor illustrated in detail in the figures.
  • FIG. 3 shows a banknote 40 with a continuous punched opening 42.
  • the opening 42 is completely covered on the front side of the banknote 40 with a transparent security element 44 according to the invention.
  • the security element 44 has a transparent main body 46 and a transparent in the visible spectral range recording layer 48, in which, as described above, were written by laser beam information containing, for example, a serial number of the bill.
  • the recording layer 48 is covered by a lenticular grid 50, which in the exemplary embodiment consists of a plurality of spherical lenses embossed in the transparent main body 46. Due to the action of the laser radiation, the recording layer 48 is blackened in some places, while the remaining areas of the recording layer 48 are unchanged transparent.
  • the inscribed serial number can therefore be read from the corresponding viewing direction both in the top view and through the opening 42 of the banknote 40 from the rear side. The tilt effect disappears in a photographic or xerographic reproduction of the banknote.
  • the laser irradiation can be used only for a local change of the refractive index or the polarization direction of the recording layer.
  • the security element 44 is further complicated.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)
  • Holo Graphy (AREA)
  • Optical Recording Or Reproduction (AREA)

Claims (19)

  1. Support de données dans lequel, sous l'effet d'un faisceau laser, des identifications sont incorporées sous forme de modèle, de lettres, de chiffres et/ou d'images, qui sont visibles du fait de variations locales des propriétés optiques du support de données, modifications provoquées par le faisceau laser et résultant de transformations du matériau, le support de données comprenant une couche d'enregistrement sensible au laser, transparente dans le domaine spectral visible, couche qui est pourvue d'un relief superficiel sous forme d'une trame lenticulaire, de façon que les identifications soient, avec le faisceau laser provenant de différentes directions, incorporées dans la couche d'enregistrement en traversant la trame lenticulaire, et puissent être reconnues lors d'une observation à partir des mêmes directions, caractérisé en ce que le support de données est transparent au moins dans le domaine des identifications incorporées.
  2. Support de données selon la revendication 1, caractérisé en ce que les modifications des propriétés optiques du support de données sont visibles par transmission.
  3. Support de données selon la revendication 1 ou 2, caractérisé en ce que les modifications des propriétés optiques du support de données sont visibles par réflexion.
  4. Support de données selon au moins l'une des revendications 1 à 3, caractérisé en ce que la trame lenticulaire comprend des lentilles cylindriques et/ ou des lentilles sphériques.
  5. Support de données selon au moins l'une des revendications 1 à 4, caractérisé en ce que la couche d'enregistrement est formée d'une couche non autoportante, ayant une épaisseur d'environ 1 µm à environ 800 µm.
  6. Support de données selon au moins l'une des revendications 1 à 5, caractérisé en ce que la couche d'enregistrement est disposée à l'intérieur du support de données.
  7. Support de données selon au moins l'une des revendications 1 à 6, caractérisé en ce que les identifications comprennent des données personnelles telles qu'une signature, une date de naissance, un portrait ou analogues.
  8. Support de données selon au moins l'une des revendications 1 à 7, caractérisé en ce que les identifications comprennent des données relatives au support de données, telles qu'une durée de validité, un numéro de carte, une indication concernant l'organisme ou l'institut émetteur, ou analogues.
  9. Support de données selon au moins l'une des revendications 1 à 8, caractérisé en ce que les identifications se présentent sous forme tramée, les éléments de la trame étant de préférence formés de pixels en forme de bâtonnets.
  10. Support de données selon au moins l'une des revendications 1 à 9, caractérisé en ce que les identifications pouvant être reconnues à partir de différentes directions sont présentes dans la couche d'enregistrement en étant imbriquées les unes dans les autres.
  11. Support de données selon au moins l'une des revendications 1 à 10, caractérisé en ce que le support de données comprend un corps principal, au moins partiellement transparent, dans lequel ou sur lequel sont disposées la couche d'enregistrement et la trame lenticulaire.
  12. Support de données selon au moins l'une des revendications 1 à 11, caractérisé en ce que le support de données comprend, outre les identifications, des impressions en noir et blanc ou en couleurs, et/ou d'autres inscriptions laser.
  13. Support de données selon au moins l'une des revendications 1 à 12, 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.
  14. Support de données selon au moins l'une des revendications 1 à 13, caractérisé en ce que le support de données représente un document de valeur, tel qu'un billet de banque, une carte d'identité ou analogues.
  15. Support de données selon au moins l'une des revendications 1 à 13, caractérisé en ce que le support de données représente un élément de sécurité destiné à être appliqué sur un document de valeur tel qu'un billet de banque, une carte d'identité ou analogues.
  16. Document de valeur tel qu'un billet de banque, une carte d'identité ou analogues, comportant un substrat de document de valeur avec un domaine formant fenêtre ou un trou, qui sur une face, ou sur les deux faces, est recouvert d'un élément de sécurité selon la revendication 15.
  17. Procédé de fabrication d'un support de données selon au moins l'une des revendications 1 à 15, dans lequel
    - on pourvoit du relief superficiel sous forme d'une trame lenticulaire la couche d'enregistrement sensible au laser, transparente dans le domaine spectral visible, et
    - on incorpore ensuite, dans un domaine transparent du support de données, à l'aide du faisceau laser provenant de différentes directions, les identifications dans la couche d'enregistrement, en lui faisant traverser la trame lenticulaire, de façon que les identifications puissent être reconnues lors d'une observation ultérieure du support de données à partir de ces mêmes directions.
  18. Procédé selon la revendication 17, caractérisé en ce que les identifications sont incorporées dans le cadre d'une opération de tramage, les éléments de la trame étant de préférence formés de pixels en forme de bâtonnets.
  19. Procédé selon la revendication 18, caractérisé en ce que les éléments de la trame sont produits par exposition de la trame lenticulaire à des impulsions laser.
EP04803402A 2003-12-12 2004-12-01 Support de donnees pourvu d'identifications inscrites au moyen d'un faisceau laser et procede de fabrication dudit support Revoked EP1697146B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10358784A DE10358784A1 (de) 2003-12-12 2003-12-12 Datenträger mit mittels Laserstrahl eingeschriebenen Kennzeichnungen und Verfahren zu seiner Herstellung
PCT/EP2004/013634 WO2005058610A2 (fr) 2003-12-12 2004-12-01 Support de donnees pourvu d'identifications inscrites au moyen d'un faisceau laser et procede de fabrication dudit support

Publications (2)

Publication Number Publication Date
EP1697146A2 EP1697146A2 (fr) 2006-09-06
EP1697146B1 true EP1697146B1 (fr) 2012-02-15

Family

ID=34672782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04803402A Revoked EP1697146B1 (fr) 2003-12-12 2004-12-01 Support de donnees pourvu d'identifications inscrites au moyen d'un faisceau laser et procede de fabrication dudit support

Country Status (6)

Country Link
US (1) US8006908B2 (fr)
EP (1) EP1697146B1 (fr)
AT (1) ATE545518T1 (fr)
DE (1) DE10358784A1 (fr)
ES (1) ES2379632T3 (fr)
WO (1) WO2005058610A2 (fr)

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DE3151407C1 (de) 1981-12-24 1983-10-13 GAO Gesellschaft für Automation und Organisation mbH, 8000 München Ausweiskarte und Verfahren zu deren Herstellung
DE3687560D1 (de) 1985-10-15 1993-03-04 Gao Ges Automation Org Datentraeger mit einem optischen echtheitsmerkmal sowie verfahren zur herstellung und pruefung des datentraegers.
GB9309673D0 (en) * 1993-05-11 1993-06-23 De La Rue Holographics Ltd Security device
DE19749789A1 (de) 1997-11-11 1999-05-12 Bundesdruckerei Gmbh Sicherheitsmerkmal für ein Wert- oder Sicherheitsdokument mit fraktalem Lamellensystem
US6073854A (en) * 1998-05-21 2000-06-13 Lti Corporation Telephone card or the like using lenticular lens material
WO2003052680A1 (fr) * 2001-12-18 2003-06-26 Digimarc Id System, Llc Elements de securite a images multiples pour documents d'identification, et procedes de realisation
US6853412B2 (en) * 2002-02-28 2005-02-08 Eastman Kodak Company Transaction card with memory and polymer dispersed cholesteric liquid crystal display

Cited By (1)

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US10800201B2 (en) 2016-03-04 2020-10-13 Bundesdruckerei Gmbh Security object having a dynamic and static window security feature and method for production

Also Published As

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US20070063053A1 (en) 2007-03-22
EP1697146A2 (fr) 2006-09-06
ES2379632T3 (es) 2012-04-30
WO2005058610A2 (fr) 2005-06-30
WO2005058610A3 (fr) 2006-02-09
DE10358784A1 (de) 2005-07-14
ATE545518T1 (de) 2012-03-15
US8006908B2 (en) 2011-08-30

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