EP2104618B1 - Élément de sécurité avec un élément optiquement variable - Google Patents

Élément de sécurité avec un élément optiquement variable Download PDF

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Publication number
EP2104618B1
EP2104618B1 EP07847008.5A EP07847008A EP2104618B1 EP 2104618 B1 EP2104618 B1 EP 2104618B1 EP 07847008 A EP07847008 A EP 07847008A EP 2104618 B1 EP2104618 B1 EP 2104618B1
Authority
EP
European Patent Office
Prior art keywords
substrate
layer
pigment
pigments
optically variable
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
EP07847008.5A
Other languages
German (de)
English (en)
Other versions
EP2104618A1 (fr
Inventor
Walter DÖRFLER
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
Priority to PL07847008T priority Critical patent/PL2104618T3/pl
Publication of EP2104618A1 publication Critical patent/EP2104618A1/fr
Application granted granted Critical
Publication of EP2104618B1 publication Critical patent/EP2104618B1/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
    • B42D25/30—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
    • 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
    • B42D25/29—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
    • B42D25/36—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
    • B42D2035/24—

Definitions

  • the invention relates to a substrate having a security element which has at least one optically variable color with pigments.
  • the individual pigments consist of at least one interference-capable, multi-layered structure.
  • data carriers such as bank notes or cards
  • optically variable security elements To protect against imitation, especially with color copiers or other reproduction methods, data carriers, such as bank notes or cards, are equipped with optically variable security elements.
  • the protection against counterfeiting is based on the fact that the visually and simply and clearly recognizable optically variable effect is not or only insufficiently reproduced by the abovementioned reproduction devices.
  • Optically variable security elements are, for example, thin-film elements which consist of a reflector layer, a dielectric and an absorber layer. If the security element is viewed from the absorber side, the viewer perceives a certain color, which changes as the viewing angle changes.
  • the cause of the color shift is an interference effect between the light rays reflected from the surface of the outer partially transmissive layer (absorber layer) and the light rays passing through the outer partially transmissive and middle dielectric layers and from the inner metal reflector layer to the partially transmissive layer be reflected.
  • the light beams are then either transmitted to the outside or reflected again, so that in this case the light beams are repeatedly reflected back and forth between the reflection layer and the partially transparent layer.
  • the light rays that have passed through the thin film layer have traveled a longer distance than those on the surface of the Thin film layer reflect light rays so that they are out of phase with each other when interfering with them.
  • the path of the light rays traversed in the thin-film layer is of different lengths. This difference results from the path difference of the beams reflected multiple times within the thin film layer due to the angle of incidence. Therefore, the phase angle of the interfering light beams is different depending on the angle of incidence, so that depending on the angle of incidence different colors or hues of the resulting, perceived by the observer light beam result.
  • Such thin-film elements can be used in the form of films, such as in WO 2005/108110 described.
  • a security element with a thin film layer is known in which the individual layers are arranged over the entire area on the security element. Markings in the form of patterns, letters, numbers or images are introduced into the layer sequence by the action of laser radiation.
  • the layer sequence contains a marking layer of a color mixture which has a mixture component which absorbs the laser radiation and a mixture component transparent to the laser radiation. The markings are visually and / or mechanically recognizable due to an irreversible change in the optical properties of the paint mixture caused by the action of the laser radiation.
  • pigmented thin-film elements are known, which are mixed into an ink.
  • the EP 0 227 423 B1 describes thin-film elements with a symmetrical structure to ensure that the pigment looks the same from every side.
  • Each of the thin-film elements consists of a five-layered thin film consisting of an inner thin film Metal reflector layer, a bottom and top arranged dielectric layer having a refractive index of 1.65 or less, and each having an outer semi-opaque or semi-permeable layer is constructed.
  • the five-layer thin film causes on the side facing the observer a color shift, ie a change between two different colors or shades at a first and a second viewing angle.
  • the optically variable color appears magenta from a given viewing angle and green from a different viewing angle. If a viewer tilts a data carrier onto which such optically variable ink has been applied, it perceives a color change from magenta to green or vice versa.
  • WO 2005/038136 A1 is a security element for security papers, documents of value and the like with a thin-film element with color-shift effect, which has a reflection layer, an absorber layer and an intermediate layer arranged between reflection layer and absorber layer.
  • the intermediate layer is formed by a layer whose layer thickness after imprinting by external influences, in particular by stretching, electromagnetic radiation, electron beam treatment or pressure and / or temperature, is locally modifiable.
  • a security element for banknotes, documents of value, tickets or as a proof of authenticity which includes a coating with at least one optically variable pigment with a clearly dependent on the angle of change of the color.
  • the optically variable In this case, pigment consists of vacuum evaporated thin film interference pigments, interference layer coated particles or cholesteric liquid crystal pigments.
  • the optically variable pigment is comprised of at least one material having selectively spectrally absorbing properties such that the optically variable pigment suppresses visible spectral components incident perpendicular to the pigment. The security element thus appears black when viewed vertically and colored when grazing.
  • an optically variable device which comprises a substrate having first and second optical devices deposited at spaced-apart locations of the substrate.
  • the first optical device consists of a first optically variable pigment and the second optical device of a second optically variable pigment.
  • the first and second optical devices have the same coincident color at an angle of incidence between 0 ° and 90 ° and a color matching angle for all other angles of incidence and have no color match.
  • the invention has for its object to design a security element with interference-capable pigments forgery-proof.
  • the invention in this case comprises both a substrate with a security element and a data carrier with a substrate with a security element.
  • the data carrier is in this case, in particular, a value document, such as a banknote, a security, a credit card or identity card, for example. a passport, a certificate and the like, a label, a packaging or another element for product safety.
  • the pigments of the optically variable color of the security element are irreversibly changed in at least a subarea by means of electromagnetic radiation in such a way that the interference effect is visibly and / or mechanically clearly changed or completely eliminated in this subarea.
  • the irreversible change of a pigment occurs, on the one hand, by the change in the optical properties of at least one layer of the pigment, i. in particular the transparency, the reflectivity, the polarization direction and the color or hue of the pigment.
  • the irreversible change of a pigment takes place by an at least partial displacement of at least one layer of the pigment.
  • a layer of the pigment is not removed, evaporated or converted, but at least partially removed from its original position within the layer structure and moved to a new position within the layer structure. This is achieved, for example, by reducing the thickness of a layer at one point while increasing the thickness of one layer at another, in particular the adjacent point.
  • the invention is not limited to five-layered pigments but is applicable to all single or multi-layered pigments which produce an optically variable effect.
  • optically variable layers are known from the prior art which, starting from the reflection layer in the direction of the viewer, have more than two layers.
  • the invention can also be applied to pigments which are produced from such optically variable layers and thus have more than five layers.
  • the at least one changed layer by the electromagnetic radiation is advantageously the outermost layer of the pigment which faces the direction of irradiation.
  • Influencing an interference-capable layer structure succeeds whenever the reflection minimum of the interference-capable layer structure largely coincides with the wavelength of the electromagnetic radiation.
  • either the angle of incidence or the wavelength of the electromagnetic radiation can be adapted to the reflection minimum of the interference-capable layer structure.
  • the reflection minima are known to shift to shorter wavelengths, so that almost always a suitable angle can be found, in which an influence of the structure takes place.
  • the invention it is not only possible to apply a single pigment color to the substrate, but also to apply a mixture of at least two pigment colors or more interference layers one above the other onto the security element, of which only one has a suitable reflection minimum and thus only one pigment color can be selectively changed it is also possible to apply a mixture of at least one pigment color and at least one printing ink or another effect color such as a color based on choleric liquid crystals or thermal inks on the security element.
  • the further effect color can also be applied via the pigment color as long as it is transparent to the laser wavelength and at least in parts of the visible spectrum.
  • the substrate is to be protected against mechanical damage such as scratches with a security element
  • a multilayer film body is, for example, a credit or identity card, wherein the security element according to the invention is located inside the film body and is covered by a transparent film.
  • an inventive security element on a security such as a banknote through a transparent film.
  • the substrate is printed on the front and / or the back and the printing recognizable in transmitted light. This has the advantage that different information can be seen in transmitted light and reflected light.
  • viewing in incident light is illumination of an object from one side and observation of the object from the same side.
  • a reflection in incident light is thus present, for example, when the front of the object is illuminated and also viewed.
  • a reflection in transmitted light in the sense of this invention is an illumination of an object from one side and a viewing of the object from another side, in particular the opposite side.
  • a reflection in transmitted light is thus present, for example, when the back of the object is illuminated and the front of the object is viewed. The light thus shines through the object.
  • the security element consists at least partially of a transparent film which is printed with the pigment colors.
  • the irradiation with electromagnetic radiation advantageously takes place on the upper side of the printing or on the lower side through the transparent film.
  • the irradiation with electromagnetic energy also done on both sides of the film. In reflected light, only the change caused by the irradiation on the respective side is visible; in transmitted light, however, no information is visible anymore.
  • the pigments are ablated or carbonized by the electromagnetic radiation.
  • this provides further design options for a security element.
  • energy densities are required than for the destruction of a pigment layer.
  • the source of the electromagnetic radiation laser sources are preferably used.
  • pulsed Nd: YAG lasers, Nd: YVO 4 lasers, CO 2 lasers or other laser types in the wavelength range from UV to far-infrared are possible, the lasers often also having advantageous frequency multiplication with an average light power between 0.5 W and 2 W work, thus preferably with a pulse energy between 10 .mu.J and 100 .mu.J.
  • Laser sources in the near infrared are used with particular advantage, since this wavelength range fits well with the absorption properties of the substrates and printing inks used for value documents. For example, it is easy to specify for this range printing inks which are transparent to the laser radiation but opaque and colored in the visible spectral range for the human observer.
  • infrared lasers in the wavelength range of 0.8 .mu.m to 3 .mu.m, in particular Nd: YAG laser or Nd: YVO 4 laser used. If lasers with higher power are used, the pulse energy can be reduced to the necessary level by fading, beam splitting, absorption filters, defocusing or similar known methods. Alternatively, the laser frequency can be increased accordingly.
  • vectors can be inscribed in the layer sequence, which is advantageous, above all, for fast inscriptions.
  • a Nd: YAG laser with a pulse frequency of, for example, 20 kHz, a power between 0.5 W and 2 W, and a diameter of the focus of the laser between 70 .mu.m to 300 .mu.m, particularly advantageously 100 .mu.m to 200 .mu.m can be operated ,
  • the working distance between the lens and the substrate is chosen to be slightly less than that required for optimum focusing in order to achieve a slight defocusing of the laser spot. If the focus diameter is chosen to be larger than the advantageous setting, with uniform energy distribution in the beam (top hat) and correspondingly higher pulse energy with one pulse even larger areas can be changed and thus the labeling speed can be increased at the expense of the resolution.
  • the laser is chosen to be energetically modulatable from pulse to pulse, a color gradient of the interference effect can be achieved.
  • different color gradients are present at different points or at different depths of the substrate.
  • the pigment or absorbing color components can be completely or partially ablated / carbonized
  • the substrate with the security element according to the invention serves, in particular, to increase the security against forgery of documents of value such as, for example, banknotes, checks, shares, identity cards, entrance tickets, tickets, certificates, credit cards, check cards and the like.
  • the substrate with the security element according to the invention can be combined in particular within a value document with any other security feature.
  • the substrate with the security element according to the invention can be attached via a security thread, combined with a hologram or diffractive structures be arranged adjacent or overlapping with other optically variable structures.
  • a security element 2 is arranged on a surface of a substrate 1.
  • the security element 2 in this case consists of an optically variable color 3 in which pigments 4 are embedded.
  • a partial region 6 of the optically variable color 3 is irradiated by electromagnetic energy, for example in the form of a laser beam 5.
  • the optically variable ink 3 used is, for example, the paint OVI® 9Z 3050A from Sicpa with pigments from Flex with a color change from Megenta to green or the corresponding paint OVI® 9Z 1050 with a color change from gold to green.
  • a lateral cross-section through a pigment 4 is shown.
  • the still unaffected by the laser beam 5 pigment 4 is according to Fig. 2a a semitranslucent layer 7, a dielectric layer 81 on its underside, a dielectric layer 82 on its upper side, and a partially transparent layer 91 on the dielectric layer 81 and a partially transparent layer 92 on the dielectric layer 82.
  • the partially transparent layer 92 lies on top of the Laser beam 5 facing side of the pigment 4, whereas the partially transparent layer 91 is covered by the reflection layer 7. If a laser beam 5 now strikes the pigment 4, the process according to FIG Fig. 2b with appropriate irradiance and wavelength of the light of the laser beam 5 only the partially transparent layer 92 influenced.
  • the optical properties of the partially transparent layer 92 are changed so that, for example, the transmissivity of the partially transparent layer 92 is increased, ie the color change is changed.
  • the partially transparent layer 92 is almost completely transparent, so that the viewer only perceives the color of the reflection layer 7. If this is metallic or silvery matt or shiny, the pigment 4 only appears silvery for the observer.
  • the laser beam 5 thus changes the partially transparent layer 92 of the optically variable color 3.
  • a change in the color change is achieved, for example in the silvery, depending on the irradiance of the laser beam 5, a part of the optically variable effect is maintained.
  • the position influenced by the laser beam 5 is according to FIG Fig. 3a clearly visible when viewed in reflected light, eg as a silvery spot with a changed color change or as an exclusively silvery spot without any further color change.
  • the optically variable ink 3 When the optically variable ink 3 is printed on a partially or completely transparent substrate, it appears Fig. 3b the optically variable color when viewed in transmitted light both in the affected by the laser beam 5 and in the uninfluenced areas in a nearly uniform hue, for example, uniformly gray.
  • the position influenced by the laser beam 5 thus does not stand out in transmitted light with respect to the uninfluenced regions, since pigments were only influenced in individual layers by the laser beam 5, whereas the almost opaque reflection layer 7 remained unaffected.
  • the total transmissivity became or the optical density of the pigments is not changed.

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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)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Laminated Bodies (AREA)

Claims (15)

  1. Substrat (1) comportant un élément de sécurité (2), qui présente au moins une couleur (3) optiquement variable contenant des pigments (4), les pigments individuels (4) présentant au moins une structure multicouche provoquant des interférences, caractérisé en ce que les pigments (4) de la couleur optiquement variable de l'élément de sécurité (2) sont dans au moins une zone partielle (6) modifiés d'une manière irréversible sous l'effet d'un rayonnement électromagnétique (5), de telle sorte que l'effet d'interférence, dans cette zone partielle (6), subisse une modification, pouvant être nettement reconnue à l'oeil nu et/ou par une machine, par comparaison avec des zones voisines et sans modification des pigments, la modification irréversible d'un pigment (4) ayant lieu sous l'effet de la modification des propriétés optiques de la couche la plus extérieure du pigment (4) qui est dirigée contre la direction du rayonnement.
  2. Substrat (1) selon la revendication 1, caractérisé en ce que la modification irréversible d'un pigment (4) a lieu sous l'effet d'un déplacement au moins partiel d'au moins une couche du pigment (4).
  3. Substrat (1) selon la revendication 1 ou 2, caractérisé en ce que les pigments (4) ont une structure à cinq couches, et sont constitués d'une couche réfléchissante centrale (7), de deux couches diélectriques (81, 82) entourant de chaque côté la couche réfléchissante centrale (7), et de deux couches extérieures (91, 92) partiellement transparentes.
  4. Substrat (1) selon la revendication 3, caractérisé en ce que la couche réfléchissante intérieure (7) est constituée d'aluminium et/ou au moins l'une des couches diélectriques (81, 82) est constituée de dioxyde de silicium et/ou les couches extérieures partiellement transparentes (91, 92) sont constituées au moins de chrome et/ou de nickel.
  5. Substrat (1) selon la revendication 3 ou 4, caractérisé en ce que le rayonnement électromagnétique (5) modifie d'une manière irréversible au moins la couche partiellement transparente (92) d'un pigment (4).
  6. Substrat (1) selon au moins l'une des revendications précédentes, caractérisé en ce que les couleurs pigmentaires sont disposées à l'intérieur de deux feuilles d'une structure de feuilles multicouche.
  7. Substrat (1) selon la revendication 6, caractérisé en ce que la structure de feuilles multicouche est une carte de crédit ou une carte d'identité, ou un passeport.
  8. Substrat (1) selon au moins l'une des revendications précédentes, caractérisé en ce que l'élément de sécurité (2) est constitué au moins partiellement d'une feuille transparente.
  9. Substrat (1) selon au moins l'une des revendications précédentes, caractérisé en ce qu'un laser fournit le rayonnement électromagnétique (5).
  10. Support de données comportant un substrat (1) selon l'une des revendications 1 à 9.
  11. Support de données selon la revendication 10, caractérisé en ce que le support de données est un document de valeur, en particulier un billet de banque ou une carte.
  12. Procédé de fabrication d'un substrat (1) comportant un élément de sécurité (2), sur lequel est sur-imprimée au moins une couleur optiquement variable (3) contenant des pigments (4), les pigments individuels (4) étant formés d'au moins une structure multicouche apte à provoquer des interférences, caractérisé en ce que les pigments (4) de la couleur optiquement variable de l'élément de sécurité (2) subissent, dans au moins une zone partielle (6), à l'aide d'un rayonnement électromagnétique (5), une modification irréversible de telle sorte que, dans cette zone partielle (6), l'effet d'interférence subisse une modification en étant nettement reconnaissable à l'oeil nu et/ou à l'aide d'une machine, la modification irréversible d'un pigment (4) ayant lieu sous l'effet de la modification des propriétés optiques de la couche la plus extérieure du pigment (4), qui est dirigée contre la direction du rayonnement.
  13. Procédé de fabrication d'un substrat (1) selon la revendication 12, caractérisé en ce que la longueur d'onde du rayonnement électromagnétique (5) est adaptée au minimum de réflexion de la structure de couches apte à provoquer des interférences.
  14. Procédé de fabrication d'un substrat (1) selon la revendication 12, caractérisé en ce que le minimum de réflexion de la structure de couches apte à provoquer des interférences est, par l'intermédiaire de l'angle d'incidence, adapté à la longueur d'onde du rayonnement électromagnétique (5).
  15. Procédé de fabrication d'un substrat (1) selon au moins l'une des revendications 12 à 14, caractérisé en ce qu'une image modulée en niveaux de gris est produite par une modulation de l'énergie du rayonnement électromagnétique (5).
EP07847008.5A 2006-12-22 2007-12-06 Élément de sécurité avec un élément optiquement variable Not-in-force EP2104618B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07847008T PL2104618T3 (pl) 2006-12-22 2007-12-06 Element zabezpieczający z elementem optycznie zmiennym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006062281A DE102006062281A1 (de) 2006-12-22 2006-12-22 Sicherheitselement mit einem optisch variablen Element
PCT/EP2007/010578 WO2008080499A1 (fr) 2006-12-22 2007-12-06 Élément de sécurité avec un élément optiquement variable

Publications (2)

Publication Number Publication Date
EP2104618A1 EP2104618A1 (fr) 2009-09-30
EP2104618B1 true EP2104618B1 (fr) 2013-11-27

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EP07847008.5A Not-in-force EP2104618B1 (fr) 2006-12-22 2007-12-06 Élément de sécurité avec un élément optiquement variable

Country Status (7)

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EP (1) EP2104618B1 (fr)
AU (1) AU2007341700B2 (fr)
CA (1) CA2671611C (fr)
DE (1) DE102006062281A1 (fr)
PL (1) PL2104618T3 (fr)
RU (1) RU2429978C2 (fr)
WO (1) WO2008080499A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008028187A1 (de) 2008-06-12 2009-12-17 Giesecke & Devrient Gmbh Sicherheitselement mit optisch variablem Element.
DE102009058603A1 (de) 2009-12-17 2011-06-22 Giesecke & Devrient GmbH, 81677 Wertdokumentsystem und Verfahren zum Herstellen desselben
DE102010006173A1 (de) 2010-01-29 2011-08-04 Giesecke & Devrient GmbH, 81677 Sicherheitselement mit erweitertem Farbkippeffekt und thermochromer Zusatzfunktion
FR2961621B1 (fr) * 2010-06-22 2014-09-05 Arjowiggins Security Procede d'authentification et/ou d'identification d'un article de securite
DE102011116491A1 (de) 2011-10-20 2013-04-25 Giesecke & Devrient Gmbh Mikrokapsel und Verwendung derselben, Mikrokakpseln aufweisendes Sicherheitselement und mit demselben ausgestatteter Datenträger
ES2633025T3 (es) 2014-05-23 2017-09-18 Merck Patent Gmbh Procedimiento para el tratamiento con láser de recubrimientos
DE102017003281A1 (de) 2017-04-04 2018-10-04 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit Reliefstruktur und Herstellungsverfahren hierfür
DE102021005870A1 (de) * 2021-11-26 2023-06-01 Giesecke+Devrient Mobile Security Gmbh Sicherheitsmerkmal für ein Identifikationsdokument, Identifikationsdokument und Verfahren zur Herstellung eines Sicherheitsmerkmals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5766738A (en) * 1979-12-28 1998-06-16 Flex Products, Inc. Paired optically variable article with paired optically variable structures and ink, paint and foil incorporating the same and method
JP2003520986A (ja) * 2000-01-21 2003-07-08 フレックス プロダクツ インコーポレイテッド 光学変調セキュリティーデバイス
DE10349000A1 (de) * 2003-10-17 2005-05-19 Giesecke & Devrient Gmbh Sicherheitselement mit Farbkippeffekt
EP1719636A1 (fr) * 2005-05-04 2006-11-08 Sicpa Holding S.A. Élement de sécurité qui change du noir à une autre couleur selon l'angle d'observation

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Publication number Publication date
CA2671611A1 (fr) 2008-07-10
AU2007341700A1 (en) 2008-07-10
WO2008080499A1 (fr) 2008-07-10
PL2104618T3 (pl) 2014-05-30
AU2007341700B2 (en) 2013-05-09
RU2009127521A (ru) 2011-01-27
CA2671611C (fr) 2015-08-11
DE102006062281A1 (de) 2008-06-26
EP2104618A1 (fr) 2009-09-30
RU2429978C2 (ru) 2011-09-27

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