EP3787906A1 - Sicherheitselement, datenträger und verwendung - Google Patents
Sicherheitselement, datenträger und verwendungInfo
- Publication number
- EP3787906A1 EP3787906A1 EP19723005.5A EP19723005A EP3787906A1 EP 3787906 A1 EP3787906 A1 EP 3787906A1 EP 19723005 A EP19723005 A EP 19723005A EP 3787906 A1 EP3787906 A1 EP 3787906A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- security element
- element according
- semitransparent
- viewed
- 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.)
- Withdrawn
Links
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
- B42D25/324—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
- B42D25/351—Translucent or partly translucent parts, e.g. windows
-
- 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
-
- 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
- B42D25/30—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
Definitions
- the invention relates to a security element and a
- Security element comprising data carrier, in particular a
- the invention further relates to the use of the security element for securing a data carrier provided with a retroreflective structure, in particular a license plate, a traffic sign, a billboard, or safety clothing.
- Securities and security documents such as banknotes, valuables or ID documents, but also other valuables, such as
- Branded articles are often provided with security elements for the purpose of security, which allow verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction.
- Security elements may, for example, be in the form of a security thread embedded in a banknote, a patch applied to the banknote, e.g. a transfer element or a cover sheet suitable for covering an opening in the banknote, a security strip or else in the form of a feature area applied directly to a value document.
- the reflective microstructure includes microreflectors formed in a pattern so as to produce a planar security element having a plurality of pixels, each having at least one microreflector (ie
- the two-dimensional form of the security element defines a main plane.
- the micro-reflectors are oriented so that the object when tilting and / or turning the
- Security element causes a movement effect, on the
- Main level is related. Instead of a movement effect, the
- Objects also show a tilting effect. From WO 2011/066990 A2 a three-dimensional appearing object is known, which appears to the viewer in front of or behind the main plane arched shape. When the security element is tilted, the position of the object relative to the main plane remains unchanged.
- the invention has for its object to provide a security element with higher security against counterfeiting.
- Security element for securing a value document, security document or a valuable object, with predetermined areas, the viewer in diffuse lighting, especially when viewed in daylight, in a first visually recognizable color appear and when lighting with a
- point light source in particular when viewed with the flashlight of a smartphone in a darkened room, appear in a second visually recognizable color and form markings in the form of patterns, characters or a coding that the viewer in diffuse lighting, especially when viewed in the Daylight, are not recognizable and are only in the illumination with a point light source, especially when viewed with the flashlight of a smartphone in a darkened room, recognizable
- the security element comprises a layer with a reflective microstructure and the viewer facing semitransparent functional layer and the semitransparent functional layer is such that it has the first visually recognizable color when viewed in reflected light and has the second visually recognizable color when viewed in transmitted light.
- Micro-glass beads based retroreflective structure is formed, wherein the reflective microstructure preferably with a
- Metallization more preferably provided with a reflective metal coating.
- a security element according to clause 1, wherein the mosaic reflective microstructure consists of a multiplicity of reflective mosaic elements characterized by the parameters size, contour, relief, reflectivity, and spatial orientation and are such that the markings in the form of patterns, signs or an encoding while tilting the Security elements have a dynamic motion effect by different groups of mosaic elements with different characteristic parameters incident light in different
- a security element according to any one of clauses 1 to 4, wherein the markings are formed in the form of patterns, characters or a coding by recesses in an opaque layer disposed between the semitransparent functional layer and the layer with the retroreflective structures in which the opaque layer is in particular a metallization or a colored layer.
- Markers preferably at least partially to the first
- the two semitransparent metallic layers are formed independently of a metal and the metal in each case from the group consisting of Al, Ag, Ni, Cr, Cu, Au, Si and an alloy of a or more of the aforementioned elements, and the dielectric layer is a Si0 2 layer, a ZnO layer, a ZnS layer, an AhCb layer, a TiO 2 layer, a nitride layer, or oxynitride of one of the elements Si , Zn, Al or Ti or a MgF2 layer or, for example, technically available, nitrocellulose layer.
- Security element according to one of the clauses 1 to 12, wherein the predetermined areas appear to the viewer in diffuse lighting, especially when viewed in daylight, gold and lighting with a point light source, especially when viewed with the flashlight of a smartphone in a darkened room, appear bluish.
- Recesses in the form of patterns, characters or a coding is arranged.
- a security element for securing a data carrier provided with a retroreflective structure, wherein the security element has predetermined areas which appear to the observer in diffuse illumination, in particular when viewed in daylight, in a first visually recognizable color and in which Lighting with a point light source, in particular when viewed with the flashlight of a smartphone in a darkened room, appearing in a second visually recognizable color and forming markings in the form of patterns, characters or a coding which are for the
- Flashlight of a smartphone in a darkened room, recognizable are, wherein the security element one for bonding the
- Viewers facing facing semitransparent functional layer and the semitransparent functional layer is such that they are in the
- Contemplation in reflected light has the first visually recognizable color and when viewed in transmitted light has the second visually recognizable color.
- the retroreflective structure of the data carrier is based on a reflective microstructure, in particular in the form of a retroreflective structure with triangular or square cube corners, or in the form of a microglass-based retroreflective structure, the reflective microstructure preferably having a metallization preferably with a mirroring
- multilayer structure having two semitransparent metallic layers and a dielectric layer arranged between the two semitransparent metallic layers.
- Security element according to clause 20, wherein the two semi-transparent metallic layers are independent are each formed of a metal and the metal is selected from the group consisting of Al, Ag, Ni, Cr, Cu, Au, Si and an alloy of one or more of the aforementioned elements, and the dielectric layer is a Si0 2 layer, a ZnO layer, a ZnS layer, an Al 2 O 3 layer, a TiO 2 layer, a layer of a nitride or oxynitride of any of Si, Zn, Al or Ti, or a MgF 2 layer or For example, technically available, nitrocellulose layer.
- the multilayer structure based on only consisting of transparent layers interference layers, the multilayer structure is based in particular on, preferably alternating, layers of Ti0 2 , A1 2 0 3 or other dielectrics.
- Plasmonic color filter based and in particular based on two-dimensional periodic nanostructures Plasmonic color filters on Two-dimensional periodic nanostructures are based, for example, from DE 10 2011 101 635 Al known.
- License plate a road sign or a road sign, a billboard or advertising space, or security clothing, comprising the
- An observation in reflected light in the sense of this invention is a lighting of the respective object from one side and a viewing of the object from the same side.
- a reflection in transmitted light is in the sense of this invention
- Diffuse lighting refers to diffuse light, which illuminates the scene evenly and with little or no shadow. Diffused light is produced by areal light sources.
- attractive security features are provided that are useful in changing viewing in diffused lighting, particularly when viewed in daylight, on the one hand, and in illumination with a point light source, especially when viewed with a smartphone's flashlight
- Light source especially when viewed with the flashlight of a smartphone in a darkened room, offers the viewer Incidentally, when viewing a with a smartphone camera with the flash on photos taken.
- a reflective microstructure in the form of a mosaic of a multiplicity of reflecting mosaic elements characterized by the parameters size, outline shape, relief shape, reflectivity and spatial orientation, can be used, such that the Markers in the form of patterns, characters or coding when tilting the security element have a dynamic movement effect in that different groups of mosaic elements with different characteristic parameters reflect incident light into different spatial areas.
- the mosaic elements preferably have a lateral dimension of less than 30 pm and below the resolution limit of the eye. It is preferred that
- Markings in the form of patterns, characters or a coding are formed as a motif in the form of an embossed structure in an embossing lacquer layer, wherein the embossing structure embossed embossed elements with surfaces
- the embossing structure here consists of a reflective microstructure in the form of a mosaic of a multiplicity of reflecting mosaic elements, which are characterized by the parameters size, outline shape, relief shape, reflectivity and spatial orientation. Reflective microstructures for displaying objects that tilt and / or rotate with the
- the reflective microstructure may preferably be a planar
- the planar shape of the security element defines a main plane.
- the reflective mosaic elements are preferably oriented so that the object causes a movement effect when tilting and / or rotating the security element, which is related to the main plane. Instead of a movement effect, the objects can also show a tilting effect. From WO 2011/066990 A2 a three-dimensional appearing object is known, which appears to the viewer in front of or behind the main plane arched shape. When tilting the security element, the position of the object remains unchanged to the main level.
- a retroreflective structure can be used.
- Retroreflective structures e.g. the light of
- Cube corner structures are based e.g. on embossed relief structures, which are mirrored with a reflective metal layer.
- the cube-corner structures may be present in particular with triangular or quadrilateral surfaces.
- the relief structures are embossed in a plastic material or in a UV varnish.
- the security element according to the invention is expediently based on a carrier film such as polyethylene terephthalate (PET), Polymethylmethacrylate (PMMA), polypropylene (PP), polyethylene (PE), polycarbonate (PC) or the like.
- a carrier film such as polyethylene terephthalate (PET), Polymethylmethacrylate (PMMA), polypropylene (PP), polyethylene (PE), polycarbonate (PC) or the like.
- the layer having the retroreflective structure can be any layer having the retroreflective structure.
- a layer thickness in a range from 10 ⁇ m to 200 ⁇ m, preferably in a range from 30 ⁇ m to 150 ⁇ m, and particularly preferably in a range from 40 ⁇ m to 150 ⁇ m.
- the height of the retroreflective structure, in particular of the triangular or quadrangular cube corners, is expediently at least 10 ⁇ m, preferably at least 30 ⁇ m, and expediently less than 200 ⁇ m, preferably less than 150 ⁇ m.
- the semitransparent functional layer has on the one hand when viewed in incident light and on the other hand when viewed in transmitted light
- Such a semitransparent functional layer is in particular a so-called Fabry-Perot thin-film element
- the two semitransparent metallic layers are preferably selected from Al or Ag;
- the dielectric layer is in particular a SiO 2 layer or an MgF 2 layer, preferably a SiO 2 layer;
- the respective preferred layer thickness is in a range of 5 nm to 20 nm, particularly preferably in a range of 10 nm to 14 nm;
- the Si0 2 dielectric layer preferably has a layer thickness in a range of 50 nm to 600 nm, more preferably in a range of 80 nm to 260 nm, and particularly preferably in a range of 210 nm to 260 nm, the ranges of 80 nm up to 100 nm and from 210 nm to 240 nm are especially preferred for providing a gold / blue color change;
- the respective preferred layer thickness is in a range from 15 nm to 30 nm, particularly preferably from 15 nm to 25 nm;
- Dielectric Si0 2 layer preferably has a layer thickness in a range of 50 nm to 600 nm, more preferably in a range of 80 nm to 260 nm, and particularly preferably in a range of 210 nm to 260 nm, wherein the ranges from 80 nm to 100 nm and from 210 nm to 240 nm are especially preferred for providing a gold / blue color change.
- the above-mentioned multi-layered structures with two semi-transparent metallic layers and a dielectric layer arranged between the two semitransparent metallic layers may have a symmetrical three-layer structure in which both the material and the layer thickness of the two semitransparent metallic layers
- Layers are identical. Alternatively, however, an asymmetric three-layer structure may be present, in which the material and / or the Layer thickness of the two semitransparent metallic layers are different, eg
- Layer thicknesses of the silver layer and the aluminum layer are identical or different;
- the abovementioned multi-layered layer structures not only make it possible to produce a semitransparent functional layer which appears gold-colored when viewed in reflected light and shows a blue hue when viewed in transmitted light, but further color changes can be produced depending on the choice of the layer thickness, in particular of the dielectric layer, e.g.
- a semitransparent functional layer which when viewed in incident light on the one hand and when viewed in transmitted light on the other
- Effect pigment composition based.
- Printed layers based on an effect pigment composition which, when viewed in reflected light, exhibit a different color than when viewed in transmitted light, in particular a gold / blue color change, a gold / violet color change, a green / gold / magenta color change, a Violet / green color change or one Silver / opaque color changes are described, for example, in WO 2011/064162 A2.
- the pigments preferably have a longest dimension of edge length from end-to-end in a range of 15 nm to 1000 nm and are based on a transition metal selected from the group consisting of Cu, Ag, Au, Zn, Cd, Ti, Cr, Mn, Fe, Co, Ni, Ru, Rh,
- the transition metal is preferably Ag.
- the aspect ratio i.e., the ratio of the longest dimension from end-to-end in terms of thickness
- the aspect ratio is preferably at least 1.5, more preferably in a range of 1.5 to 300.
- Metal pigment is preferably below 10: 1, in particular below 5: 1.
- the color can be seen in transmission and the color when viewed in reflection (eg, blue in Transmission and silver, gold, bronze, copper or violet in reflection, in addition also violet, magenta, pink, green or brown in transmission and different colors in reflection, which depend on the choice of pigment / binder ratio). Colors with
- Gold / blue color change between reflection and transmission are e.g. mentioned in Examples 1, 2 and 3 in Table 1 of WO 2011/064162 A2. Further, Example 4 shows a color with gold / violet color change, Example 5 a color with green-gold / magenta color change, Example 7 a color with violet / green color change and Example 8 a color with silver / opaque color change.
- the security element according to the invention expediently has the following structure, wherein additional layers and films are conceivable: Adhesive layer suitable, for example, for applying the security element to a value document substrate, such as a banknote substrate;
- the security element according to the invention may have the following structure, wherein additional layers and films are conceivable:
- Adhesive layer e.g. for applying the film to a
- Value document substrate such as a banknote substrate
- a protective lacquer or a protective film to protect the semi-transparent functional layer from harmful environmental influences is not limited to, but not limited to,
- Recesses in the form of patterns, characters or a coding is arranged.
- the opaque layer may in particular be a metallization obtainable, for example, by vapor deposition or a color layer obtainable, for example, by means of a printing process.
- a metallization obtainable, for example, by vapor deposition
- a color layer obtainable, for example, by means of a printing process.
- the production of structured metallizations by means of a washing process is known in the art, see for example the document EP 1972462 Bl and the prior art cited therein.
- to Production of the color layer may further be platelet-shaped
- WO 01/069823 A1 WO 2005/051675 A2 (see, for example, the description on page 11, line 10, to page 12, penultimate paragraph) and WO 2011/064162 A2. The ones described therein
- platelet-shaped metal pigments have the advantage that they are a substrate with relief structure, in particular a relief with
- Microstructures and / or nanostructures adapt so well that the difference to a conventional, available by vapor deposition metallization is almost unrecognizable.
- the simple, printing-technical production of the reflection layer makes it possible to dispense with complex process steps, such as printing the carrier with a soluble wash in the form of a desired recess within the reflection layer to be produced, generating a metallization by vapor deposition and washing the washing paint together with the above the washing paint applied metallization.
- an embossing lacquer layer with an embossed relief, wherein the embossed relief is in particular a relief having micro and / or nanostructures.
- the semitransparent functional layer adapts to the relief, so that when the security element is viewed in incident light, the observer receives additional optically variable information, e.g. in the form of patterns, signs or one
- optically variable security elements with a microstructure that are intended for
- Securing banknotes are suitable, for example, from WO 2007/079851 Al and WO 2011/066991 A2 known.
- the security element according to the invention can have the markings in the form of a coding, for example in the form of a one-dimensional bar code or a two-dimensional code or QR code. Such a code can be easily scanned with the smartphone.
- the security element according to the invention can be present in particular as a patch or label, as a strip or as a thread.
- the security element may be in the form of a transfer element formed on a temporary support.
- FIG. 1 shows a security element according to the invention according to a first embodiment in a cross-sectional view
- FIG. 2 a cross-sectional view of a security element according to the invention in accordance with a second exemplary embodiment
- Figure 3 shows a security element according to the invention according to a third embodiment in plan view in the
- Figure 4 shows the security element according to the invention according to the third embodiment in plan view in the Looking through the pocket of a smartphone in a darkened room;
- FIG. 7 a cross-sectional view of a security element according to the invention in accordance with a fourth exemplary embodiment
- Figure 8 shows the security element according to the invention according to the third embodiment in a cross-sectional view
- Figure 9 shows an embodiment of a retroreflective
- Figure 10 shows another embodiment of a
- Figure 11 shows an embodiment of an inventive
- Vehicle license plate is suitable.
- FIG. 1 shows a security element 1 according to the invention in a cross-sectional view according to a first exemplary embodiment.
- Microstructure is formed in the example by a retroreflective structure.
- the security element 1 is based on a carrier foil 2, e.g. a polyethylene terephthalate (PET) film on the viewer
- the semitransparent functional layer 3 is obtainable by vapor deposition and has a multilayer construction with two
- semitransparent functional layer 3 appears golden when viewed in reflected light and shows a blue hue when viewed in transmitted light.
- the carrier film 2 is on the semi-transparent
- the embossing lacquer layer 4 is based e.g. on a UV varnish, in which the relief of the retroreflective structure is embossed. The relief of the
- Embossing lacquer layer 4 is provided with a reflective metal coating 5, in FIG.
- Example an aluminum metallization, provided, so as to form together with the relief of the embossing lacquer layer 4, the retroreflective structure.
- Adjacent to the specular metal coating 5 is an adhesive layer 6, e.g. for applying the
- Security element 1 on a value document substrate such as a
- FIG. 2 shows a security element 7 according to the invention in a cross-sectional view according to a second exemplary embodiment.
- the reflective microstructure is formed in the example by a retroreflective structure.
- the security element 7 is based on a carrier foil 8, e.g. a polyethylene terephthalate (PET) film, which forms an outer layer of the security element 7 in the present example.
- PET polyethylene terephthalate
- the carrier film 8 is at her
- the semitransparent functional layer 9 is obtainable by vapor deposition and has a multilayer structure with two semitransparent Al layers and an SiC> 2 layer arranged between the two semitransparent Al layers.
- the semitransparent functional layer 9 appears in the Viewing in the incident light golden and shows when viewing in the
- the semitransparent functional layer 9 is on the opposite side of the support film 8 with a
- Embossing lacquer layer 10 provided.
- the embossing lacquer layer 10 is based on a UV lacquer in which the relief of the retroreflective structure is embossed.
- the relief of the embossing lacquer layer 10 is provided with a reflective metal coating 11, in the example an aluminum metallization, in order in this way together with the relief of the embossing lacquer layer 10
- an adhesive layer 12 Adjacent to the specular metal coating 11 is an adhesive layer 12, e.g. for applying the retroreflective sheeting 7 to a value document substrate such as a banknote.
- FIG. 3 shows a security element 13 according to the invention according to a third exemplary embodiment in plan view when viewed in daylight.
- the security element 13 appears to the viewer in the form of a
- FIG. 4 shows the security element 13 according to the invention according to the third embodiment in plan view when illuminated with a point light source, in particular when viewed with the flashlight of a smartphone in a darkened room.
- the viewer takes the repeating characters "PL" and the
- Line-shaped, square border in a bright, blue color against a dark, black background true.
- FIG. 8 shows a cross-sectional view of the inventive security element 13 according to the third exemplary embodiment.
- the security element 13 is based on a carrier film 14, for example a polyethylene terephthalate (PET) - Film which forms an outer layer of the security element 13 in the present example.
- the carrier film 14 is provided on its inside with a semitransparent functional layer 15.
- the semitransparent functional layer 15 is obtainable by vapor deposition and has a multilayer structure with two semitransparent Al layers and an S1O2 layer arranged between the two semitransparent Al layers.
- the semitransparent functional layer 15 appears in the
- the semitransparent functional layer 15 is on the opposite side of the support film 14 with an optional, the semitransparent functional layer 15 protective transparent
- Intermediate layer 16 in the example an intermediate coating provided.
- the optional intermediate layer 16 has opaque areas 17, e.g. are available by printing with a black ink.
- the opaque regions 17 may be provided by structured metallization.
- a structured metallization is e.g. through full-surface
- the security element 13 has an embossing lacquer layer 18.
- the embossing lacquer layer 18 is based on a UV lacquer into which The relief of the embossing lacquer layer 18 is provided with a reflective metal coating 19, in the example an aluminum metallization, in order in this way together with the relief of the
- Embossing lacquer layer 18 to form the retroreflective structure Adjacent to the reflective metal coating 19, an adhesive layer 20 is arranged, for example, for the application of the security element 13 to a
- Value document substrate e.g. a banknote, is suitable.
- FIGS 5 and 6 show illustrations for explaining the operation of the subject invention.
- FIG. 5 shows a semitransparent functional layer 21, which is obtainable by vapor deposition, and a multilayer structure with two semitransparent Al layers and one between the two
- the semitransparent functional layer 21 appears golden when viewed in reflected light and shows a blue hue when viewed in transmitted light.
- Reference numeral 22 denotes the incident white light.
- FIG. 6 shows the combination of those known from FIG.
- color filter 21 together with the retroreflectors 25 the blue transmitted color portion 24 of the light spectrum is reflected by the retroreflectors 25 and transmitted a second time through the gold-blue color filter 21 (see the dashed arrows with the reference numerals 26 and 27, each denoting the blue light).
- the blue light 27 is for the Observers perceived, in the case of the embodiment of Figure 4 in the form of the luminous, blue letters "PL" and the line-shaped, square border.
- Embossed structures such as e.g. Micromirror arrangements or
- Has scattering structures or diffractive structures This allows e.g. Realize security elements based on the known in the prior art micromirror technology that does not affect the color retroreflection at night. In the event of a vertical incidence of light at night, scattering structures can cause the gold-colored light component to be scattered.
- FIG. 7 shows a security element 28 according to the invention in a cross-sectional view according to a fourth exemplary embodiment.
- the security element 28 is based on a carrier foil 29, e.g. a polyethylene terephthalate (PET) film, which on the side facing the viewer with a PET film.
- PET polyethylene terephthalate
- Semitransparent functional layer 31 is provided.
- the semitransparent functional layer 31 is obtainable by vapor deposition and has a multilayer structure with two semitransparent Al layers and an Si0 2 layer arranged between the two semitransparent Al layers.
- the semitransparent functional layer 31 appears in the
- the semitransparent functional layer 31 is applied to the carrier film 29 by means of an embossing lacquer layer 30.
- the embossing lacquer layer 30 is based on a UV lacquer and has an embossed relief containing microstructures.
- Functional layer adapts to the relief, so that the viewer in the Considering the security element in reflected light can perceive an additional, dependent on the viewing angle, optically variable information in the form of patterns, characters or a coding.
- semitransparent functional layer 31 is provided with an optional,
- transparent protective layer 32 e.g. a protective lacquer, provided.
- Support film 29 has an embossing lacquer layer 33 on the side opposite the semitransparent functional layer 31.
- the embossing lacquer layer 33 is based on a UV lacquer in which the relief of the reflective
- Microstructure in the example a retroreflective structure is embossed.
- the relief of the embossing lacquer layer 33 is provided with a reflective metal coating 34, in the example an aluminum metallization, in order in this way together with the relief of the embossing lacquer layer 33
- an adhesive layer 35 Adjacent to the specular metal coating 34 is an adhesive layer 35, e.g. for applying the retroreflective sheeting 28 to a value document substrate such as a banknote.
- FIG. 9 shows an exemplary embodiment of a retroreflective structure in plan view.
- the retroreflectors are based on
- FIG. 9 shows the geometry of embossed retroreflectors
- the surface of the relief structure can with a
- reflective metal layer is present in mirrored.
- FIG. 10 shows a further exemplary embodiment of a
- FIGS. 1, 2, 6, 7 and 8 show exemplary embodiments in which the reflective microstructure is formed in the form of a retroreflective structure.
- the mosaic reflective microstructure could be formed from a plurality of reflective mosaic elements that are arranged such that the markings in the form of patterns, characters, or an encoding as the security element is tilted
- the relief 5 shown in FIG. 1, the relief 11 shown in FIG. 2, the relief 25 shown in FIG. 6, the relief 34 shown in FIG. 7 or the relief 19 shown in FIG in the figure 7 have reliefs 31, ie identical with the relief 31, different or at least partly identical.
- FIG. 11 shows an exemplary embodiment of a device according to the invention
- Security element that is used to secure one with a
- the security element 21 is based on a carrier foil 22, for example a polyethylene terephthalate (PET) film, which forms an outer layer of the security element 21 in the present example.
- the carrier film 22 is provided on its inside with a semi-transparent functional layer 23.
- the semitransparent functional layer 23 is obtainable by vapor deposition and has a multilayer structure with two semitransparent Al layers and an Si0 2 layer arranged between the two semitransparent Al layers.
- the semitransparent functional layer 23 appears gold-colored when viewed in reflected light and shows a blue hue when viewed in transmitted light.
- the semitransparent Functional layer 23 is on the opposite side of the support film 22 with an optional, the semi-transparent functional layer 23 protective transparent intermediate layer 24, in the example an intermediate coat, provided.
- Reference numeral 25 denotes opaque areas which are obtainable, for example, by printing with a black ink. Alternatively, the opaque regions 25 may be provided by patterned metallization.
- a structured metallization is eg by full surface metallization and subsequent demetallization by means of a washing process or by full surface metallization and
- the opaque areas 25 represent e.g. Signs, patterns or a coding.
- the security element 21 has an adhesive layer 26.
- the mark 27 has a retroreflective structure 28 on the side opposite the security element 21.
Landscapes
- Laminated Bodies (AREA)
- Credit Cards Or The Like (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018003603.1A DE102018003603A1 (de) | 2018-05-03 | 2018-05-03 | Sicherheitselement, Datenträger und Verwendung |
PCT/EP2019/000130 WO2019210994A1 (de) | 2018-05-03 | 2019-04-24 | Sicherheitselement, datenträger und verwendung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3787906A1 true EP3787906A1 (de) | 2021-03-10 |
Family
ID=66476587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19723005.5A Withdrawn EP3787906A1 (de) | 2018-05-03 | 2019-04-24 | Sicherheitselement, datenträger und verwendung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3787906A1 (de) |
CN (1) | CN111836727B (de) |
DE (1) | DE102018003603A1 (de) |
WO (1) | WO2019210994A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114905881B (zh) * | 2021-02-10 | 2023-08-22 | 中钞特种防伪科技有限公司 | 防伪元件及其制造方法以及防伪产品 |
CN115674932A (zh) * | 2021-07-28 | 2023-02-03 | 中钞特种防伪科技有限公司 | 防伪元件、产品和用于制造防伪元件的方法 |
Family Cites Families (24)
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US4478769A (en) | 1982-09-30 | 1984-10-23 | Amerace Corporation | Method for forming an embossing tool with an optically precise pattern |
US4763985A (en) | 1986-08-01 | 1988-08-16 | Minnesota Mining And Manufacturing Company | Retroreflective sheet with enhanced brightness |
US5759468A (en) | 1993-10-20 | 1998-06-02 | Minnesota Mining And Manufacturing Company | Raised zone retroreflective cube corner article and method of manufacture |
US20040209049A1 (en) * | 2003-04-17 | 2004-10-21 | Marco Bak | Laser marking in retroreflective security laminate |
GB0326576D0 (en) | 2003-11-14 | 2003-12-17 | Printetch Ltd | Printing composition |
AU2004290233B2 (en) * | 2003-11-14 | 2008-04-10 | Kiwa Chemical Industry Co., Ltd. | Retroreflective Sheet for Security and Method for Manufacturing the Same |
CN100426012C (zh) * | 2004-04-28 | 2008-10-15 | 纪和化学工业株式会社 | 色相可变型逆反射薄片 |
GB2433637A (en) | 2005-12-21 | 2007-06-27 | 3M Innovative Properties Co | Semi-transparent retroreflective material |
DE102005061749A1 (de) | 2005-12-21 | 2007-07-05 | Giesecke & Devrient Gmbh | Optisch variables Sicherheitselement und Verfahren zu seiner Herstellung |
DE102007055112A1 (de) | 2007-01-05 | 2008-07-10 | Giesecke & Devrient Gmbh | Verfahren zur Herstellung von Sicherheitsfolien |
DE102007005884B4 (de) * | 2007-02-07 | 2022-02-03 | Leonhard Kurz Stiftung & Co. Kg | Sicherheitsdokument |
DE102007039996B4 (de) * | 2007-02-07 | 2020-09-24 | Leonhard Kurz Stiftung & Co. Kg | Sicherheitselement für ein Sicherheitsdokument und Verfahren zu seiner Herstellung |
US20120029121A1 (en) | 2008-12-19 | 2012-02-02 | Basf Se | Thin aluminium flakes |
CN102639651B (zh) | 2009-11-27 | 2016-03-16 | 巴斯夫欧洲公司 | 用于加密元件和全息图的涂料组合物 |
DE102009056934A1 (de) | 2009-12-04 | 2011-06-09 | Giesecke & Devrient Gmbh | Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes |
DE102010047250A1 (de) | 2009-12-04 | 2011-06-09 | Giesecke & Devrient Gmbh | Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes |
DE102009058243A1 (de) | 2009-12-14 | 2011-06-16 | Giesecke & Devrient Gmbh | Dünnschichtelement mit Mehrschichtstruktur |
DE102011101635A1 (de) | 2011-05-16 | 2012-11-22 | Giesecke & Devrient Gmbh | Zweidimensional periodisches, farbfilterndes Gitter |
DE102012020550A1 (de) * | 2012-10-19 | 2014-04-24 | Giesecke & Devrient Gmbh | Optisch variables Flächenmuster |
US9529125B2 (en) | 2013-01-28 | 2016-12-27 | Aura Optical Systems, Lp | Metalized microprismatic retroreflective sheeting with improved observation angularity |
DE102013019944A1 (de) | 2013-11-27 | 2015-05-28 | Giesecke & Devrient Gmbh | Sicherheitselement mit magnetisch ausrichtbaren Magnetpigmenten und einem zweiten Motiv sowie Verfahren zu dessen Herstellung |
DE102015005969A1 (de) | 2015-05-08 | 2016-11-10 | Giesecke & Devrient Gmbh | Optisch variables Sicherheitselement |
DE102015008971A1 (de) * | 2015-07-10 | 2017-01-12 | Giesecke & Devrient Gmbh | Sicherheitselement und Datenträger |
DE102015010191A1 (de) * | 2015-08-06 | 2017-02-09 | Giesecke & Devrient Gmbh | Sicherheitselement mit Subwellenlängengitter |
-
2018
- 2018-05-03 DE DE102018003603.1A patent/DE102018003603A1/de not_active Withdrawn
-
2019
- 2019-04-24 CN CN201980017877.2A patent/CN111836727B/zh active Active
- 2019-04-24 EP EP19723005.5A patent/EP3787906A1/de not_active Withdrawn
- 2019-04-24 WO PCT/EP2019/000130 patent/WO2019210994A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN111836727B (zh) | 2022-08-16 |
CN111836727A (zh) | 2020-10-27 |
WO2019210994A1 (de) | 2019-11-07 |
DE102018003603A1 (de) | 2019-11-07 |
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