EP3188916B1 - Element de securite a effet optique variable - Google Patents

Element de securite a effet optique variable Download PDF

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Publication number
EP3188916B1
EP3188916B1 EP15775377.3A EP15775377A EP3188916B1 EP 3188916 B1 EP3188916 B1 EP 3188916B1 EP 15775377 A EP15775377 A EP 15775377A EP 3188916 B1 EP3188916 B1 EP 3188916B1
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EP
European Patent Office
Prior art keywords
region
sub
layer
micropattern
optically variable
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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.)
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EP15775377.3A
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German (de)
English (en)
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EP3188916A1 (fr
Inventor
Patrick ENGELMANN
Winfried HOFFMÜLLER
Theodor Burchard
Ralf Liebler
Andreas Rauch
Christian Fuhse
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Giesecke and Devrient Currency Technology GmbH
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Giesecke and Devrient Currency Technology GmbH
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Publication of EP3188916A1 publication Critical patent/EP3188916A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • 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
    • B42D25/328—Diffraction gratings; Holograms
    • 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

Definitions

  • the invention relates to an optically variable security element for securing valuables, having a feature area that exhibits at least two different optically variable effects.
  • the invention also relates to a method for producing such a security element and a correspondingly equipped data carrier.
  • Data carriers such as valuables or identity documents, or other valuables, such as branded articles, are often provided with security elements for the purpose of security, which permit verification of the authenticity of the data carriers and at the same time serve as protection against unauthorized reproduction.
  • Security elements with viewing-angle-dependent effects play a special role in the authentication of authenticity since they can not be reproduced even with the most modern copiers.
  • the security elements are thereby equipped with optically variable elements that give the viewer a different image impression under different viewing angles and, for example, show a different color or brightness impression and / or another graphic motif depending on the viewing angle.
  • the invention has the object to provide a security element of the type mentioned, in which the different optically variable effects are arranged in register with each other.
  • the suppression of the color shift effect in the first subregion is currently attributable to the fact that the dielectric layer material runs to some extent during printing and the surface of the dielectric thus does not or at least does not extend to the elevations and depressions of the microstructure can completely follow. This results in locally different dielectric layer thicknesses. Since the local thickness of the dielectric determines the colors at which constructive and destructive interference occurs, and thus also determines the color of the reflected light, the color-shifting layer system reflects different colors depending on the local thickness of the dielectric material. Averaged over larger surfaces, the different colors produce a gray or silvery hue, depending on the brightness.
  • the dielectric layer is applied equally in the first and second subarea, but the color shift effect of the thin film element is only visible in the second subarea while it is suppressed in the first subarea, especially in the region of the microstructures, the result is special Advantage that the different optically variable effects of the first and second sub-range are automatically matched and without additional measures to each other.
  • the first section advantageously shows a non-colored, metallic, typically silvery appearance.
  • the reflective layer of the thin-film element can be formed from copper, which produces a reddish metallic appearance in the first subregion.
  • the printed dielectric layer has a locally irregular layer thickness in the first partial region having the microstructure, preferably with a thickness variation of 10% or more, particularly preferably 20% or more, 40% or more and in particular 60% or more ,
  • the thickness variation is related to the greatest layer thickness, so that, for example, a dielectric layer whose thickness varies between 240 nm and 300 nm has a thickness variation of 20%.
  • the interference layer structure of the thin-film element comprises a reflection layer, an absorber layer and a dielectric spacer layer arranged between the reflection layer and the absorber layer.
  • the interference layer structure may advantageously also comprise two absorber layers and a dielectric spacer layer arranged between the two absorber layers.
  • the dielectric spacer layer need not only be formed by the printed dielectric layer, but may be formed also comprise two or more sub-layers, in particular a vapor-deposited dielectric layer and a printed dielectric layer.
  • the first subregion preferably has a microscopic rainbow color shift effect that can only be recognized under magnification.
  • the microscopic rainbow color shift effect is preferably composed of a plurality of microscopic color dots of different colors, the largest dimension of the microscopic color dots being between 1 ⁇ m and 80 ⁇ m, preferably between 1 ⁇ m and 20 ⁇ m, particularly preferably between 2 ⁇ m and 5 ⁇ m.
  • This microscopic rainbow color-shift effect can be used as a higher-level mark of authenticity, which can be tested only with special tools, such as a strong magnifying glass or a microscope.
  • the first subregion has in its interior a recessed region in which the dielectric spacer layer is recessed in the interference layer structure of the thin-film element.
  • the recessed area advantageously has a largest dimension between 10 ⁇ m and 200 ⁇ m, preferably between 20 ⁇ m and 150 ⁇ m.
  • Such a recessed area can provide further hidden authenticity feature, since the recessed area and the rest of the first area have the same appearance when viewed with the naked eye, but the enlarged microscopic rainbow color-shift effect in the recessed area can be detected by magnified viewing. Even larger recesses with largest dimensions of several millimeters are conceivable.
  • Such large recessed areas can not be detected with a conventional microscope as a whole, the authenticity can be in the peripheral areas of the Recess areas occur where the transitions from colorless areas and "rainbow" areas are visible in the microscope.
  • the interference layer structure of the thin-film element advantageously contains the vapor-deposited dielectric layer in all four subregions, so that it forms a dielectric spacer layer of the thin-film element in the first and second subarea together with the printed dielectric layer.
  • the microstructure of the third subregion is identical to the microstructure of the first subregion and generates the same optically variable effect.
  • the first and third sub-areas still show different appearances, since the thin-film element generates a color-shift effect in the third sub-area, while the color-shift effect in the first sub-area is suppressed.
  • the first subregion therefore only shows the optically variable effect produced by the microstructure, while this optically variable effect in the third subregion is combined with the color shift effect of the thin film element.
  • the microstructure of the first subregion is advantageously formed by a diffractive relief structure, such as a hologram structure, by a micromirror structure, by a microlens structure or by a microcavity structure. If the feature area contains the abovementioned third subarea, the microstructure of the third subarea may alternatively or additionally be formed by one of the structures mentioned. As mentioned, the microstructures of the first and third subregions are preferably identical.
  • the invention also includes a data carrier with a security element of the type described.
  • the data carrier may in particular be a value document, such as a banknote, in particular a paper banknote, a polymer banknote or a film composite banknote, a share, a bond, a certificate, a coupon , a check, a high-quality entrance ticket, as well as an identification card, such as a credit card, a bank card, a cash card, an authorization card, an identity card or a pass personalization page.
  • a reflection layer or absorber layer is vapor-deposited in the first and second subarea for the production of the thin-film element. If a dielectric layer is vapor-deposited, then a dielectric layer in the form of a dielectric layer is applied imprinted liquid paint, and finally an absorber layer is evaporated.
  • Fig. 1 shows a schematic representation of a banknote 10 with an optically variable security element 12 according to the invention Shape of a wide safety strip. It should be understood, however, that the invention is not limited to security strips and banknotes, but may be applied to all types of security elements, such as labels on goods and packaging, or to documents, passports, passports, credit cards, health cards, and the like. In the case of banknotes and similar documents, security threads or transfer elements may be considered in addition to security strips.
  • the optically variable security element 12 contains a feature area 14, which consists of two partial areas 16, 18, which are distinguished in the figure by different hatchings.
  • the first portion 16 is formed by two silvery squares 20 and the silvery shiny number sequence 22.
  • the first portion 16 shows a first optically variable effect in the form of a running effect, in which when tilting the security element 12, a bright horizontal bar seems to move up or down.
  • the second subregion 18 is formed by the remaining parts of the feature region 14 and shows a second optically variable effect in the form of a color shift effect, for example with a color change from green when viewed perpendicularly to blue when viewed obliquely.
  • a color shift effect for example with a color change from green when viewed perpendicularly to blue when viewed obliquely.
  • no color-shift effect is recognizable to the viewer, but this area appears to be non-colored with a metallic, in particular silvery, appearance.
  • the peculiarity of the described security element 12 consists in particular in the fact that the first and second subareas 16, 18 with their different visual appearances are perfectly matched to one another are. If, in conventional designs, the first subregion 16 with its optically variable running effect as a contrast to the color-shifting environment 18 should have a silvery appearance, then the thin-film structure which gives the second subregion 18 its color-shift effect must be recessed in the first subregion 16, since otherwise likewise there Color shift effect is visible. For this purpose, for example, a washing ink must be printed on the first sub-area, with the aid of which the subsequently applied thin-film structure in the first sub-area can be removed again.
  • wash ink is applied in a separate operation to an already suitably structured first portion 16, due to production inevitable Passerschwankept between the structuring and the recess in the thin film structure, so that the optically variable running effect and the color shift effect can not be arranged in register with each other.
  • a UV-curable embossing lacquer layer 32 is applied to a carrier film 30, for example a PET film, and provided with an embossed microstructure 34 in the first sub-region 16, which in combination with Fig. 1 described running effect generated.
  • the feature area 14 of the security element occupies the entire area of the carrier film 30.
  • the regions of the feature region 14 which are located outside the first subregion 16 provided with the microstructures 34 form the second subregion 18 in which no microstructures are present.
  • an interference layer structure thin-film element 40 comprising a reflective layer 42, a dielectric spacer layer 44 and an absorber layer 46 was applied to the entire feature area 14.
  • the dielectric spacer layer of such thin film elements is formed by vapor deposition, whereby a dielectric layer of uniform thickness is formed regardless of the local surface texture of the reflective layer 42.
  • the dielectric spacer layer 44 of the invention is printed as a liquid paint and subsequently cured. Solvent paints based on nitrocellulose, for example, which have good flow behavior, are very suitable.
  • the paint in liquid form By applying the paint in liquid form, the latter runs in the first subregion 16 with the microstructures 34 to a certain extent between the individual structural elements 36, thereby completely or partially leveling the microstructure 34.
  • the dielectric layer 44 therefore does not have a uniform layer thickness in the first subregion 16, so that no large-area color-shift effect visible to the naked eye can form there. Rather, the color-shift effect in the partial region 16 is effectively suppressed and appears substantially non-colored with the silvery appearance of the reflection layer 42.
  • the dielectric layer 44 is printed there with a uniform layer thickness on the flat substrate and the thin-film element 40 therefore produces the desired color-shift effect in a manner known per se.
  • the dielectric layer 44 is printed over the entire feature area 14, including the first and second subareas 16, 18, and the suppression of the color shift effect is precisely in the area of the microstructures 34 of the first subarea 16, a perfect registration between the optical elements automatically results without additional measures variable effects of the two partial areas 16, 18, namely between the optically variable running effect of the partial area 16 and the color-shift effect of the partial area 18.
  • the layer thickness of the dielectric layer 44 on a microscopic length scale on the order of the microstructure elements 36 can be substantially constant in sections be.
  • a microscopic rainbow color-shift effect can then be observed in which the interference colors produced change in rapid succession.
  • the multiplicity of microscopic color dots 56 (FIG. Fig. 3 ) to the above-mentioned non-colored overall impression.
  • This microscopic rainbow color-shift effect can be used as a higher-level mark of authenticity, which can be tested only with special tools, such as a strong magnifying glass or a microscope.
  • Fig. 3 a development of the security element 12 in plan view of a detail section 50, in which the dielectric layer 44 in a small recessed area 52 is recessed inside the portion 16.
  • the recessed area is advantageously designed in the form of characters, patterns or a coding, wherein Fig. 3 as an example, the numeral sequence "10" indicates the denomination of the banknote 10.
  • the recess region 52 is advantageously arranged in the interior of the partial region 16, and is also very small with a dimension of typically 20 ⁇ m to 150 ⁇ m. A registration of the recessed area 52 to other elements of the security element is therefore not important.
  • the recessed region 52 does not show a color shift effect because of the dielectric layer 44 missing there, but essentially only the silvery appearance of the reflective layer 42.
  • the presence of the recess region 52 is therefore not visible to the naked eye. Only when looking at the section 50 with a microscope differences are clear.
  • the non-recessed areas 54 of the portion 16 exhibit the above-described microscopic rainbow color-shift effect composed of a plurality of microscopic color dots 56 of different color.
  • the dimension of the microscopic color dots 56 is usually between 1 .mu.m and 10 .mu.m, but it can also be larger in principle, as long as it is below the resolution of the human eye. From this microscopically color-shifting background, the recess area 52 clearly stands out due to the lack of any color effects as a negative representation in the form of the number sequence "10".
  • Fig. 4 schematically shows a more complex embodiment of the invention with a feature area 62, which consists of four sections 64, 66, 68, 70 with four different optically variable effects. It shows Fig. 4 (a) a plan view of the optically variable security element 60 and Fig. 4 (b) a cross section of the security element 60 along the line BB of Fig. 4 (a) ,
  • a UV-curable embossing lacquer layer 32 is applied to a carrier film 30 and provided in the first portion 64 and in the third portion 68 with an embossed microstructure 34, for example, the Fig. 1 described running effect generated.
  • an embossed microstructure 34 for example, the Fig. 1 described running effect generated.
  • no microstructures are present in the second subregion 66 and fourth subregion 70.
  • the entire feature area 62 is provided with a thin-film element 80 with interference layer structure, which is formed by a reflection layer 82 applied in all four subregions 64, 66, 68, 70, a dielectric layer 84 vapor-deposited in all four subregions, only in the first and third subarea 64 66 printed on dielectric layer 86 and an applied again in all four sections 64, 66, 68, 70 absorber layer 88 is formed.
  • the embodiment of Fig. 4 thus combines the vapor deposition of a dielectric layer 84 with the printing of a dielectric layer 86 as a liquid paint. Since there is a layer sequence of reflection layer, dielectric spacer layer and absorber layer in each subarea, each subarea is provided with a color-shifting thin-film element, even if the layer thickness of the spacer layer is greater in the first and second subareas 64, 66 than in the third and fourth subareas 68, 70.
  • a thin-layer element with reflective layer 82, vapor-deposited dielectric layer 84, printed dielectric layer 86 and absorber layer 88 is present on a flat substrate, which, because of the greater overall thickness of the spacer layer, produces a second, longer-wavelength color-shift effect, in this case from red to green.
  • a thin-film element with reflection layer 82, vapor-deposited dielectric layer 84 and absorber layer 88 is present on the microstructures 34. Since the deposited dielectric layer 84 has a uniform thickness regardless of the local surface texture of the underlying reflective layer 82, in the third partial region 68 the running effect of the microstructures is superimposed on the first color shift effect (green to blue).
  • a thin-film element with reflection layer 82, vapor-deposited dielectric layer 84, printed dielectric layer 86 and absorber layer 88 is present on the microstructures 34.
  • the varnish 86 printed in liquid form runs to some extent between the individual structural elements 36 and thereby completely or partially levels the microstructures 34.
  • the dielectric spacer layer consisting of the layers 84, 86 therefore does not have a uniform thickness, so that no large-area color-shift effect visible to the naked eye can form in the first partial region 64. There, therefore, only the running effect of the microstructures 34 without superimposed color shift effect is visible.

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  • Credit Cards Or The Like (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Claims (15)

  1. Élément de sécurité à effet optique variable (12) pour la sécurisation d'objets de valeur (10), comportant une zone de caractéristiques (14) qui montre au moins deux effets optique variable, dans lequel
    - la zone de caractéristiques est pourvue dans une première sous-zone (16) d'une microstructure (34) qui présente un premier effet optique variable,
    - aucune microstructure n'est présente dans une deuxième sous-zone (18) de la zone de caractéristiques,
    - la zone de caractéristiques est pourvue d'un élément à couches minces (40) recouvrant la microstructure et doté d'une structure de couches à interférence et qui génère dans une deuxième sous-zone comme deuxième effet optique variable un effet de basculement de couleur, caractérisé en ce que
    - la structure de couches à interférence de l'élément à couches minces comprend dans la première et dans la deuxième sous-zone une couche diélectrique imprimée (44),
    grâce à laquelle l'effet de basculement de couleur dans la première sous-zone présentant la microstructure est évité pour l'oeil nu, de sorte que, dans la première sous-zone, seul le premier effet optique variable de la microstructure est présent et, dans la deuxième sous-zone, l'effet de basculement de couleur de l'élément à couches minces est présent comme deuxième effet optique variable de la microstructure.
  2. Élément de sécurité selon la revendication 1, caractérisé en ce que la couche diélectrique imprimée dans laquelle première sous-zone présentant la microstructure présente une épaisseur de couche localement irrégulière, de préférence avec une variation d'épaisseur de 10 % ou plus, très préférentiellement 20 % plus, 40 % ou plus et en particulier 60 % ou plus.
  3. Élément de sécurité selon la revendication 1 ou 2, caractérisé en ce que la structure de couches à interférence de l'élément à couches minces comprend une couche réfléchissante, une couche absorbante et une couche d'espacement diélectrique disposée entre la couche réfléchissante et la couche absorbante, ou deux couches absorbantes et une couche d'espacement diélectrique disposée entre les deux couches absorbantes.
  4. Élément de sécurité selon au moins une des revendications 1 à 3, caractérisé en ce que les différents effets optiques variables des première et deuxième sous-zones sont mutuellement passants.
  5. Élément de sécurité selon au moins une des revendications 1 à 4, caractérisé en ce que la première sous-zone présente un effet de basculement de couleur en arc-en-ciel microscopique détectable seulement sous grossissement.
  6. Élément de sécurité selon la revendication 5, caractérisé en ce que l'effet de basculement de couleur en arc-en-ciel microscopique est composé d'une multitude de points colorés microscopiques de coloration différente, la plus grande dimension des points colorés microscopiques se situant entre 1 µm et 10 µm, de préférence entre 2 µm et 5 µm.
  7. Élément de sécurité selon au moins une des revendications 1 à 6, caractérisé en ce que la première sous-zone présente à l'intérieur une zone d'évidement dans laquelle la couche d'espacement diélectrique est évidée dans la structure de couches à interférence de l'élément à couches minces.
  8. Élément de sécurité selon la revendication 7, caractérisé en ce que la zone d'évidement présente une dimension maximale entre 10 µm et 200 µm, de préférence entre 20 µm et 150 µm.
  9. Élément de sécurité selon au moins une des revendications 1 à 8, caractérisé en ce que la zone de caractéristiques présente, en plus de la première et de la deuxième sous-zone, une troisième et quatrième sous-zone,
    - la zone de caractéristiques étant pourvue dans la troisième sous-zone d'une microstructure qui présente un effet optique variable,
    - aucune microstructure n'étant présente dans la quatrième sous-zone de la zone de caractéristiques, et
    - la structure de couches à interférence de l'élément à couches minces contenant dans les troisième et quatrième sous-zones une couche diélectrique vaporisée mais pas de couche diélectrique imprimée, de sorte que l'élément à couches minces génère dans les troisième et quatrième sous-zones un effet de basculement de couleur qui se superpose dans la troisième sous-zone à l'effet optique variable de la microstructure.
  10. Élément de sécurité selon la revendication 9, caractérisé en ce que la structure de couches à interférence de l'élément à couches minces contient dans les quatre sous-zones la couche diélectrique vaporisée, et que la couche diélectrique vaporisée constitue, dans les première et deuxième sous-zones, conjointement avec la couche diélectrique imprimée, une couche d'espacement diélectrique de l'élément à couches minces.
  11. Élément de sécurité selon la revendication 9 ou 10, caractérisé en ce que la microstructure de la troisième sous-zone a une conformation identique à la microstructure de la première sous-zone et génère le même effet optique variable.
  12. Élément de sécurité selon au moins une des revendications 1 à 11, caractérisé en ce que la microstructure de la première sous-zone et/ou de la troisième sous-zone est formée par une structure en relief diffractive, en particulier une structure d'hologramme, par une structure à micro-miroir, par une structure à micro-lentille ou par une structure à micro-cavité.
  13. Support de données comportant un élément de sécurité selon au moins une des revendications 1 à 12.
  14. Procédé de fabrication d'un élément de sécurité selon au moins une des revendications 1 à 12, dans lequel
    - un substrat support est pourvu, dans une première sous-zone de la zone de caractéristiques, d'une microstructure qui présente un premier effet optique variable,
    - aucune microstructure n'est prévue dans une deuxième sous-zone de la zone de caractéristiques,
    - la zone de caractéristique et pourvue d'un élément à couches minces recouvrant la microstructure et doté d'une structure de couches à interférence et qui génère comme deuxième effet optique variable un effet de basculement de couleur, et
    - la structure de couches à interférence de l'élément à couches minces est réalisée, dans les première et seconde sous-zones, avec une couche diélectrique imprimée sous forme de vernis liquide grâce à laquelle l'effet de basculement de couleur pour l'oeil nu est évité dans la première sous-zone présentant la microstructure, de sorte que, dans la première sous-zone, seul le premier effet optique variable de la microstructure est présent et que, dans la seconde sous-zone, l'effet de basculement de couleur de l'élément à couches minces est présent comme deuxième effet optique variable.
  15. Procédé selon la revendication 14, caractérisé en ce que, dans les première et deuxième sous-zones, pour réaliser l'élément à couches minces, une couche réfléchissante ou couche absorbante est d'abord vaporisée, une couche diélectrique est ensuite vaporisée en option, puis une couche diélectrique sous forme de vernis liquide est imprimée et enfin une couche absorbante est vaporisée.
EP15775377.3A 2014-09-03 2015-08-24 Element de securite a effet optique variable Active EP3188916B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014013049.5A DE102014013049A1 (de) 2014-09-03 2014-09-03 Optisch variables Sicherheitselement
PCT/EP2015/001727 WO2016034274A1 (fr) 2014-09-03 2015-08-24 Élément de sécurité optiquement variable

Publications (2)

Publication Number Publication Date
EP3188916A1 EP3188916A1 (fr) 2017-07-12
EP3188916B1 true EP3188916B1 (fr) 2018-08-01

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EP (1) EP3188916B1 (fr)
CN (1) CN106573488B (fr)
DE (1) DE102014013049A1 (fr)
WO (1) WO2016034274A1 (fr)

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* Cited by examiner, † Cited by third party
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DE102016007649A1 (de) * 2016-06-22 2017-12-28 Giesecke+Devrient Currency Technology Gmbh Optisch variables Sicherheitselement
GB2555491B (en) * 2016-11-01 2019-03-27 De La Rue Int Ltd Security devices and methods of manufacture thereof
WO2018097238A1 (fr) * 2016-11-24 2018-05-31 大日本印刷株式会社 Élément de modulation de lumière et support d'enregistrement d'informations
US20210405274A1 (en) * 2017-09-08 2021-12-30 Dai Nippon Printing Co., Ltd. Light modulation element and information recording medium
DE102018001379A1 (de) * 2018-02-21 2019-08-22 Giesecke+Devrient Currency Technology Gmbh Transferträger
DE102018004062A1 (de) 2018-05-18 2019-11-21 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit Mikroreflektoren
CN108773229B (zh) * 2018-06-12 2019-11-15 王海宇 防伪装置及制造方法和安全票证
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EP3188916A1 (fr) 2017-07-12
DE102014013049A1 (de) 2016-03-03
CN106573488A (zh) 2017-04-19
CN106573488B (zh) 2018-04-06

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