EP3034315B1 - Élement de securite, son procede de fabrication et support de donnees dote d'un element de securite - Google Patents
Élement de securite, son procede de fabrication et support de donnees dote d'un element de securite Download PDFInfo
- Publication number
- EP3034315B1 EP3034315B1 EP15003592.1A EP15003592A EP3034315B1 EP 3034315 B1 EP3034315 B1 EP 3034315B1 EP 15003592 A EP15003592 A EP 15003592A EP 3034315 B1 EP3034315 B1 EP 3034315B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- color
- security element
- shifting
- lacquer
- 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.)
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Links
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 9
- 239000010410 layer Substances 0.000 claims description 157
- 239000004922 lacquer Substances 0.000 claims description 34
- 238000004049 embossing Methods 0.000 claims description 24
- 239000004973 liquid crystal related substance Substances 0.000 claims description 24
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 239000010409 thin film Substances 0.000 claims description 11
- 239000011888 foil Substances 0.000 claims description 7
- 238000002310 reflectometry Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 238000007639 printing Methods 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
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- 239000000758 substrate Substances 0.000 description 11
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- 229910004298 SiO 2 Inorganic materials 0.000 description 4
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- 230000003287 optical effect Effects 0.000 description 3
- 239000002966 varnish Substances 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000003098 cholesteric effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 240000001439 Opuntia Species 0.000 description 1
- 235000004727 Opuntia ficus indica Nutrition 0.000 description 1
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- 239000004920 heat-sealing lacquer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000012939 laminating adhesive Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
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Images
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
- B42D25/364—Liquid crystals
-
- 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
Definitions
- the invention relates to an optically variable security element for securing valuables, comprising a transparent support and a layer structure arranged on the support, which starting from the support has a transparent embossing lacquer layer with an embossed relief structure, a color-shifting layer, a dark resist lacquer and a color-tilting liquid crystal layer.
- the invention further relates to a method for producing such a security element and a data carrier with such a security element.
- 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 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 color-shift effect is based on such thin-film elements on viewing angle-dependent Interference effects due to multiple reflections in the different sublayers of the element.
- the path difference of the light reflected at the different layers depends on the one hand on the optical thickness of a dielectric spacer layer, which determines the distance between a semi-transparent absorber layer and a reflective layer, and on the other hand varies with the respective viewing angle. Since the path difference is on the order of the wavelength of the visible light, the result is an angle-dependent color impression for the viewer due to the extinction and amplification of certain wavelengths.
- a suitable choice of material and thickness of the dielectric spacer layer a variety of different color shift effects can be designed.
- the object of the invention is to provide a security element of the type mentioned above with high security against forgery and an attractive visual appearance.
- a generic optically variable security element contains a transparent embossing lacquer layer with an embossed relief structure. It is preferred that the relief structure impressed into the embossing lacquer layer has a reflective Microstructure in the form of a mosaic of a variety (especially achromatic) reflecting mosaic elements, wherein the mosaic elements are characterized by the parameters size, outline, relief shape, reflectivity and spatial orientation.
- Optically variable security elements with such a microstructure are known from the WO 2007/079851 A1 and from the WO 2011/066991 A2 known.
- micromirror is also used below.
- a micromirror-based security element provided with a color-shifting layer allows for dynamic reflection with a clear color change upon tilting of the security document-equipped value document.
- the security element can also be equipped with additional functionalities, such as with demetallized text elements and / or picture elements (such as denomination of denomination of the bill) or with magnetic coding.
- the optically variable security element according to the invention provides the viewer with a (in particular different) color-shift effect both in front-side plan view and in rear-side view of the security element when tilting the value document equipped with the security element.
- the viewer perceives the color-tilting liquid-crystal layer applied to the dark resist coating.
- the observer perceives the color-shifting layer present below the dark resist.
- front here is the By the embossing lacquer layer is meant the side of the security element carrier.
- the term “back side” refers to that side of the security element carrier which is opposite the side of the embossing lacquer layer.
- Both the color-shifting liquid crystal layer and the color-shifting layer serve as reflection layers for the mosaic elements.
- Thin-layer systems with a color-shift effect or layers of liquid-crystalline material, in particular of cholesteric liquid-crystalline material, are particularly suitable as the color-shifting layer.
- the color-shifting layer can be designed in particular as a thin-layer system or thin-film interference coating.
- the dielectric material for example, ZnS, SiO 2 , TiO 2 , MgF 2 or nitrocellulose can be used.
- the color-shifting layer may also be formed as an interference filter, thin semitransparent metal layer with selective transmission by plasma resonance effects, nanoparticles, etc.
- the color-shifting layer can in particular also be realized as a liquid-crystal layer, diffractive relief structure or sub-wavelength grating.
- the color-shifting layer is in the form of a thin-layer system with a structure absorber, dielectric, reflector (formed in this order on the embossing lacquer layer).
- the thin-layer system may have, for example, the layer sequence Cr (absorber) / SiO 2 (dielectric) / Al (reflector).
- the color-tilting liquid-crystal layer applied to a dark resist coating is based in particular on cholesteric liquid-crystalline material.
- Farbkippende liquid crystal layers are for example from GB 2 386 584 A known.
- Polymeric liquid-crystalline layers can be produced, for example, by printing technology or by coating or laminating methods.
- the dark resist can in particular contain a dye or a pigment.
- a black resist is preferred.
- the term "dark resist coating" can generally be understood to mean any dark, in particular black, color.
- the dark resist is preferably resistant to an etchant, e.g. an etching solution.
- the mosaic elements form a predetermined motif in that different groups of mosaic elements with different characteristic parameters reflect incident light into different spatial areas.
- the mosaic elements have a lateral dimension below the resolution limit of the eye.
- the mosaic elements preferably have a lateral dimension of less than 100 ⁇ m, particularly preferably less than 30 ⁇ m.
- Such small mosaic elements can be produced on the one hand in established film technology due to the small profile associated with low profile depth, on the other hand creates the small element size a variety of possible arrangements for the mosaic elements, as described in more detail below together with the associated benefits.
- the mosaic elements advantageously have a lateral dimension of more than 3 ⁇ m, preferably more than 5 ⁇ m. These dimensions ensure that wavelength-dependent light diffraction effects increase are negligible and that the incident light is achromatically reflected by the mosaic elements without disturbing color effects.
- the mosaic elements expediently have a square, rectangular, round, oval, honeycomb-shaped or polygonal-limited outline shape.
- the lateral dimensions of the mosaic elements in no direction are more than five times the dimension in one of the other directions.
- the mosaic elements have a simple relief shape with exactly one reflection surface inclined towards the surface of the security element.
- the angle of inclination of the reflection surface of the mosaic elements is expediently less than 90 °, preferably less than approximately 45 °.
- the reflection surface of the mosaic elements may be flat or concave or convex.
- the mosaic elements have relief shapes with two or more reflection surfaces inclined in different directions against the surface of the security element.
- the mosaic elements may have a roof structure or a multi-sided pyramidal structure.
- the angle of inclination of the reflection surfaces of the mosaic elements is expediently less than 90 °, preferably less than about 45 °, and the reflection surfaces of the mosaic elements can be both flat and concave or convex.
- the mosaic elements in regions a simple relief shape with a central, inclined to the surface of the security element reflection surface (the so-called middle orientation).
- the angles of inclination of the reflection surface of the mosaic elements have a substantially random variation by area-wise predetermined different average orientations.
- a glittering effect results which is practically the same as the appearance of magnetically oriented pigments of optically variable security inks.
- the mean orientation of the reflection surfaces (or facets) of different mosaic elements (or pixels) is selected analogously to the mean orientation of the pigments.
- the glittering effect of such colors is based on the fact that the individual pigments do not reflect exactly in a given direction, but that there is a certain random variation of the reflection directions.
- Optically variable security elements with such a microstructure are known from the WO 2011/066991 A2 known.
- the variation of the reflection directions predetermined by the variation of the orientations of the facets of different pixels is preferably at least about 1 °, preferably at least about 3 °, particularly preferably at least about 10 °.
- mosaic elements form retroreflectors, ie multi-reflective structures that reflect light incident from a certain angle range back into the direction of incidence.
- the mosaic elements in this case have a cube corner structure with a relief shape of three reflecting surfaces which are substantially perpendicular to one another and face each other.
- the three reflection surfaces define an optical axis, which is given for a cube corner structure by the spatial diagonal of the associated cube.
- the thus defined optical axis preferably points in a preselected direction for each mosaic element so that one or more image motifs can be displayed, as described in more detail below.
- the mosaic itself preferably represents a raster image of a plurality of pixels, each pixel being formed by one or more achromatically reflective mosaic elements.
- the brightness of the pixels of the raster image can be determined by one or more of the parameters size, contour shape, relief shape, reflectivity and spatial orientation of the mosaic elements of the respective pixel, or by the number of mosaic elements with certain characteristic parameters in the respective pixel.
- a further information is encoded in the arrangement of the mosaic elements within a pixel.
- the mosaic of the security element can also reflect two or more different image motifs in different spatial areas, so that a tilt or movement image is created for the viewer with a corresponding movement of the security element.
- the mosaic may also reflect an enlarging or reducing contour of an image motif in different spatial areas, so that a pump image is created for the viewer with a corresponding movement of the security element. If the mosaic reflects at least two views of an image motif in different spatial regions, a stereo image of the image motif is created for the viewer at a preselected viewing distance.
- the parameters size, outline shape, relief shape, reflectivity and spatial orientation of the mosaic elements may be selected such that one or all of the motif images for the viewer are visible in the planar orientation of the security element.
- these parameters may also be selected such that one or all of the motif images appear to the viewer only when a preselected deformation of the security element occurs.
- a security element may additionally include information in the form of patterns, characters, or encodings formed by nonreflective areas within the mosaic.
- the achromatically reflecting microstructures can also be combined with holographic or hologram-like diffraction structures, or with incorporated magnetic materials, with incorporated phosphorescent, fluorescent or other luminescent substances, with specifically adjusted conductivity, in particular through a specifically set thickness of a metallic reflection layer, with color shift effects or colored embossing lacquer and be provided.
- the invention also includes a method for producing a security element of the type described, in which the surface profile of the microstructure is embossed in a lacquer layer, and the embossed lacquer layer with a color-shifting layer, a dark resist and a color-tilting liquid crystal layer is coated.
- the surface profile is thereby preferably embossed in a UV-curable lacquer layer and the lacquer layer cured after embossing.
- thermoplastic embossing As thermoplastic embossing z. As thermoplastic plastic materials into consideration, in which by means of a suitable embossing tool under the action of heat, the surface profile of the invention is impressed. Very common are z. B. thermoplastics, which are provided by means of a nickel die as embossing tool at a temperature of about 130 ° C with the microstructure according to the invention.
- the invention further comprises 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.
- 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.
- Fig. 1 shows a schematic representation of a banknote 10, with two Security elements 12 and 16 is equipped with achromatisch reflective microstructures each according to an embodiment of the invention.
- the first security element in this case represents a security thread 12 in the form of a so-called "pendulum thread".
- the pendulum thread 12 has window regions 14 which protrude on the front side of the banknote 10 on the surface.
- the shuttle thread 12 window portions 18 (shown in phantom), which emerge on the back of the bill 10 on the surface.
- the window areas on both sides can be offset relative to the front or back, or partially overlapping or completely overlapping.
- the second security element is formed by an affixed in a window portion of the banknote 10 security element 16 of any shape.
- the banknote 10 may e.g. are based on a transparent plastic substrate, wherein the banknote in the region of the applied security element 16 neither on the front side, nor on the back has an ink, so that the area for the viewer is recognizable as a transparent window area.
- the applied in the transparent window area security element 16 may form in this way a see-through security element that provides the viewer when viewed in incident light from the front, when viewed in incident light from the back, and when viewed in transmitted light each have a different subject.
- the banknote 10 may alternatively be based on a foil / paper / foil composite substrate, wherein the central paper layer in the region of the applied security element 16 has a (in particular transparent) Adhesive or filler filled) recess.
- Foil / paper / foil composite substrates are made of WO 2004/028825 A2 known.
- the banknote 10 is based on a paper / foil / paper composite substrate, the outer paper layers each having a recess in the region of the applied security element 16 (see, for example, FIGS WO 2006/066431 A1 ).
- the banknote 10 is based on a paper substrate which has a continuous recess in the region of the applied security element 16.
- the continuous recess is covered on at least one side of the paper substrate by the applied security element 16 (see eg WO 2011/015622 A1 ).
- the security element 20 includes a raster image 22 of a plurality of pixels 24, each pixel 24 containing a plurality of achromatically reflecting micromirrors 26-1, 26-2, as for two of the pixels 24 in FIG Fig. 2 indicated.
- the micromirrors are characterized by the parameters size, outline shape, relief shape, reflectivity and spatial orientation and reflect incident light 28 in accordance with the specifications of this parameter set, each in a specific spatial region 30.
- the micromirrors 26-1 and 26-2 of FIG Fig. 2 each have a square base area A, thus a square outline shape, and a lateral extent of 15 ⁇ 15 ⁇ m 2 .
- the micromirrors also have a simple relief shape with a single flat reflecting surface 32, which includes a certain inclination angle ⁇ with the surface of the security element.
- the security element 20 is now viewed from the spatial direction into which the first micromirrors 26-1 reflect, the pixels with the first micromirrors 26-1 appear bright, while the pixels with the second micromirrors 26-2 appear dark, so that corresponding to the arrangement the pixels 24, a "black and white" raster image with the desired image content is created.
- the micromirrors 26-1, 26-2 it is ensured in the selected dimensions of the micromirrors 26-1, 26-2 that the micromirrors are so small that they can not be resolved by the naked eye, so that each pixel 24 appears to the viewer as a uniform surface.
- the micromirrors are so large that wavelength-dependent light diffraction effects are negligible. The incident light is therefore achromatically reflected by the micromirrors 26-1, 26-2 without disturbing color effects.
- the pixels of the raster images are filled in the simplest case with similar micromirrors.
- the grid points each have a size of 100 .mu.m.times.100 .mu.m and contain 100 micromirrors with a base area of 10 .mu.m.times.10 .mu.m.
- "Dark" pixels can also be achieved by a random orientation of the individual micromirrors in this pixel, as this less light is directed in the spatial directions preferred by other pixels.
- FIG. 3 shows by way of illustration the layer structure of a security film 40 according to the invention with an achromatically reflecting micromirror structure before being applied to a substrate.
- a photosensitive UV lacquer layer 44 is applied homogeneously to a carrier film 42 and embossed in the shape of the desired surface relief. Subsequently, the embossed resist layer is cured by irradiation with UV light, and a light-reflecting layer structure 45 (to be described later in connection with FIGS FIG. 5 described in detail) applied. If a thermoplastic material is used instead of the UV lacquer layer 44, the surface relief at an elevated temperature, for. B. 130 ° C, molded in the thermoplastic and the thermoplastic material provided after curing with the light-reflecting layer structure 45.
- the finished structure is then applied via an adhesive layer 48 to a in Fig. 3 not shown substrate applied.
- the substrate may be, for example, a value document substrate, in particular a security paper.
- the carrier foil 42 can subsequently be removed.
- the reflective layer structure 45 is covered by the UV varnish 44, which is the protection of the embossed surface structure before impression and unwanted duplication serves.
- the higher the refractive index of the lacquer layer compared to the surrounding air means that the angle of inclination ⁇ required for a specific deflection of the incident light can be selected to be smaller than for uncovered mirror surfaces. Therefore, the profile height h can be made smaller, which facilitates the manufacturing process.
- Fig. 3 to recognize the surface relief shown there contains two types of micromirrors 46 with the same inclination angle ⁇ , but different spatial orientation. For example, when the security element is viewed vertically and when suitably illuminated, both micromirror types appear to be equally bright. If the observer tilts the security element to the right or left, the image motif formed by the micromirrors 46 emerges once in positive representation and once in negative representation.
- Fig. 4 shows the layer structure of a security thread 50 with an achromatically reflecting micromirror structure.
- a UV lacquer layer 54 is applied to a PET film 52, embossed in the form of the desired surface relief, hardened and coated with a light-reflecting layer structure 56 (described below in connection with FIGS FIG. 5 described in detail) provided.
- the layer structure thus obtained is then laminated by means of a laminating adhesive 58 onto a second PET film 60, which is provided with a machine-readable security feature in the form of transparent magnetic features 62.
- the security thread is coated on both sides with heat sealing lacquer 64.
- Transparent magnetic features are eg from the EP 1 497 141 B1 known.
- the micromirrors can be embodied in a multiplicity of configurations in order to reflect the incident light to varying degrees into different spatial regions (as in the US Pat FIG. 5 of the WO 2007/079851 A1 ).
- the light-reflecting layer structure (with the reference number 45 in the FIG. 3 and reference number 56 in the FIG. 4 ) contains a Cr layer as an absorber 451, a SiO 2 layer as a dielectric 452, an Al layer as a reflector 453, a black resist 454, and a color-tilting liquid crystal layer 455.
- the color-tilting liquid crystal layer 455 is based on a polymer liquid crystal material such as eg from the GB 2 386 584 A is known.
- FIG. 6c shows an alternative embodiment of the in the FIGS. 3 and 4 shown security element in which a recess in the form of a pattern or in the form of characters within the formed by the thin film system "absorber (451) dielectric (452) reflector (453)" color-shifting layer is present.
- the color-tilting liquid crystal layer 455 is schematically illustrated in the form of a solid line "suspended" in the region of the recess (this indicates that the liquid-crystal layer 455 is obtainable over the entire surface by means of a coating method).
- Figures 6a and 6b show the individual steps in the production of the in the FIG. 6c shown layer structure.
- the embossing lacquer 44 has the Cr absorber 451, the dielectric SiO 2 layer 452, and the Al reflector 453, each of which is obtainable by vapor deposition. On through the layers 451, 452 and 453 formed color-shifting thin-film element, a black resist coating 454 is partially printed.
- a demetallization step is carried out in which the areas of the color-shifting thin-film element (451, 452, 453) not protected by resist varnish 454 are washed off, for example by means of etching solution.
- the color-tilting liquid-crystal layer 455 is applied over the whole area by a coating process.
- the Indian FIG. 6c shown layer structure has only in the areas outside of the recess on color shift effects.
- Fig. 7 shows a further, alternative embodiment of a security element with a recess within the color-shifting layer, wherein the absorber layer 451 contained in the color-shifting layer additionally has recesses 456.
- the recesses 456 can be produced, for example, by a washing method, an etching method or by means of laser radiation.
- the recesses 456 can be produced after the application of all layers by means of actinic radiation, for example by means of a suitable laser.
- the notches 456 may be used to generate additional information, such as characters or patterns.
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Claims (11)
- Élément de sécurité (12, 20, 40, 50) optiquement variable destiné à la sécurisation d'objets de valeur (10), ayant une structure à couches (45, 56) qui, dans l'ordre, comporte les couches suivantes :- une couche de vernis de gaufrage (44, 54) transparente ayant une structure en relief gaufrée ;- une couche à effet de changement des couleurs par basculement (451, 452, 453) ;- un vernis resist foncé (454) ; et- une couche cristaux liquides (455),caractérisé en ce que
la structure à couches est agencée sur un support (42, 52) transparent, en ce que l'ordre des couches part du support et que la couche cristaux liquides a un effet de changement des couleurs par basculement. - Élément de sécurité (12, 20, 40, 50) selon la revendication 1, cependant que la structure en relief gaufrée dans la couche de vernis de gaufrage (44, 54) est une microstructure réfléchissante sous forme d'une mosaïque (24) consistant en une pluralité d'éléments de mosaïque (26-1, 26-2) qui peuvent être caractérisés par les paramètres taille, forme de contour, forme de relief, capacité de réflexion et orientation spatiale et qui constituent un motif prédéterminé, ce qui est obtenu par le fait que différents groupes d'éléments de mosaïque (26-1, 26-2) à paramètres caractéristiques différents réfléchissent dans différentes zones spatiales de la lumière incidente, cependant que les éléments de mosaïque (26-1, 26-2) présentent une dimension latérale L située en-dessous de la limite de résolution de l'oeil.
- Élément de sécurité (12, 20, 40, 50) selon la revendication 2, cependant que, lors d'une observation de l'élément de sécurité (12, 20, 40, 50) depuis le côté du support (42, 52) transparent qui fait face à la structure à couches (45, 56) agencée sur le support (42, 52) transparent, les éléments de mosaïque (26-1, 26-2) présentent en tant que couche réfléchissante la couche à effet de changement des couleurs par basculement (451, 452, 453).
- Élément de sécurité (12, 20, 40, 50) selon la revendication 3, cependant que la couche à effet de changement des couleurs par basculement (451, 452, 453) est un système à couche mince comportant un absorbeur (451), un diélectrique (452) et un réflecteur (453) qui sont agencés dans l'ordre sur la couche de vernis de gaufrage (44, 54).
- Élément de sécurité (12, 20, 40, 50) selon une des revendications de 2 à 4, cependant que, lors d'une observation de l'élément de sécurité (12, 20, 40, 50) depuis le côté tourné vers la structure à couches (45, 56) agencée sur le support (42, 52) transparent, les éléments de mosaïque (26-1, 26-2) présentent en tant que couche réfléchissante la couche cristaux liquides (455) à effet de changement des couleurs par basculement.
- Élément de sécurité (12, 20, 40, 50) selon une des revendications de 1 à 5, cependant qu'il y a des des évidements disposés en parfait repérage les uns par rapport aux autres dans la couche à effet de changement des couleurs par basculement (451, 452, 453) et dans le vernis resist foncé (454), et, en option, dans la couche cristaux liquides (455) à effet de changement des couleurs par basculement.
- Procédé de fabrication d'un élément de sécurité (12, 20, 40, 50) optiquement variable selon une des revendications de 1 à 6, comprenanta) la mise à disposition d'un support (42, 52) transparent qui comporte une couche de vernis de gaufrage (44, 54) transparente ayant une structure en relief gaufrée ;b) l'application d'une couche à effet de changement des couleurs par basculement (451, 452, 453) sur la couche de vernis de gaufrage (44, 54) ;c) l'impression de la couche à effet de changement des couleurs par basculement (451, 452, 453) avec un vernis resist foncé (454) ;e) l'application d'une couche cristaux liquides (455) à effet de changement des couleurs par basculement sur le vernis resist foncé (454).
- Procédé selon la revendication 7, cependant que le vernis resist foncé (454) est, à l'étape c), imprimé en certaines zones sur la couche à effet de changement des couleurs par basculement (451, 452, 453), et que, entre les étapes c) et e), l'étape suivante d) est exécutée :d) enlèvement de la couche à effet de changement des couleurs par basculement (451, 452, 453) dans les zones dans lesquelles la couche à effet de changement des couleurs par basculement (451, 452, 453) n'est pas pourvue de vernis resist foncé (454), par lavage au moyen d'un agent décapant, au moyen d'un procédé de lavage ou au moyen d'un rayonnement laser.
- Support de données (10) comprenant un élément de sécurité (12, 20, 40, 50) selon une des revendications de 1 à 6.
- Support de données (10) selon la revendication 9, cependant que l'élément de sécurité (12, 20, 40, 50) est agencé dans une zone fenêtre transparente du support de données (10).
- Support de données (10) selon la revendication 9 ou 10, cependant que le support de données (10) est un document de valeur tel que par exemple un billet de banque, en particulier un billet de banque en papier, un billet de banque en polymère ou un billet de banque en film composite, ou bien une carte d'identification ou une page de données de passeport.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014018890.6A DE102014018890A1 (de) | 2014-12-17 | 2014-12-17 | Sicherheitselement, Verfahren zum Herstellen desselben und mit dem Sicherheitselement ausgestatteter Datenträger |
Publications (2)
Publication Number | Publication Date |
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EP3034315A1 EP3034315A1 (fr) | 2016-06-22 |
EP3034315B1 true EP3034315B1 (fr) | 2018-02-21 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15003592.1A Active EP3034315B1 (fr) | 2014-12-17 | 2015-12-16 | Élement de securite, son procede de fabrication et support de donnees dote d'un element de securite |
Country Status (2)
Country | Link |
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EP (1) | EP3034315B1 (fr) |
DE (1) | DE102014018890A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016009024A1 (de) | 2016-07-25 | 2018-01-25 | Giesecke+Devrient Currency Technology Gmbh | Sicherheitspapier, Sicherheitselement und Wertdokument |
DE102019005551A1 (de) * | 2019-08-07 | 2021-02-11 | Giesecke+Devrient Currency Technology Gmbh | Herstellverfahren für ein Sicherheitspapier und damit erhältliches Sicherheitspapier |
DE102021120697A1 (de) | 2021-08-09 | 2023-02-09 | Giesecke+Devrient Currency Technology Gmbh | Verfahren zur kontaktierung eines elektrisch leitenden papiergefüges, verbundkörper und verwendung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10226114A1 (de) * | 2001-12-21 | 2003-07-03 | Giesecke & Devrient Gmbh | Sicherheitselement für Sicherheitspapiere und Wertdokumente |
GB0201767D0 (en) | 2002-01-25 | 2002-03-13 | Rue De Int Ltd | Improvements in methods of manufacturing substrates |
GB0209564D0 (en) | 2002-04-25 | 2002-06-05 | Rue De Int Ltd | Improvements in substrates |
DE10243653A1 (de) | 2002-09-19 | 2004-04-01 | Giesecke & Devrient Gmbh | Sicherheitspapier |
CA2591982C (fr) | 2004-12-23 | 2014-05-06 | Landqart | Structure multicouche servant de substrat d'impression et procede de fabrication |
DE102005061749A1 (de) | 2005-12-21 | 2007-07-05 | Giesecke & Devrient Gmbh | Optisch variables Sicherheitselement und Verfahren zu seiner Herstellung |
DE102009036314A1 (de) | 2009-08-06 | 2011-02-10 | Giesecke & Devrient Gmbh | Verfahren zur Herstellung eines Sicherheitselements und nach dem Verfahren erhältliches Sicherheitselement |
DE102010047250A1 (de) | 2009-12-04 | 2011-06-09 | Giesecke & Devrient Gmbh | Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes |
-
2014
- 2014-12-17 DE DE102014018890.6A patent/DE102014018890A1/de not_active Withdrawn
-
2015
- 2015-12-16 EP EP15003592.1A patent/EP3034315B1/fr active Active
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Also Published As
Publication number | Publication date |
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DE102014018890A1 (de) | 2016-06-23 |
EP3034315A1 (fr) | 2016-06-22 |
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