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
  • B42D25/328—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
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/24—Passports
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/29—Securities; Bank notes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/324—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
  • B42D25/355—Security threads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
  • B42D25/373—Metallic materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/405—Marking
  • B42D25/41—Marking using electromagnetic radiation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/45—Associating two or more layers
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/0005—Adaptation of holography to specific applications
  • G03H1/0011—Adaptation of holography to specific applications for security or authentication
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
  • G03H1/0236—Form or shape of the hologram when not registered to the substrate, e.g. trimming the hologram to alphanumerical shape
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
  • G03H1/024—Hologram nature or properties
  • G03H1/0248—Volume holograms
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
  • G03H1/2202—Reconstruction geometries or arrangements
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
  • G03H1/2645—Multiplexing processes, e.g. aperture, shift, or wavefront multiplexing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/23—Identity cards
• • 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
  • B42D25/333—Watermarks
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/0005—Adaptation of holography to specific applications
  • G03H1/0011—Adaptation of holography to specific applications for security or authentication
  • G03H2001/0016—Covert holograms or holobjects requiring additional knowledge to be perceived, e.g. holobject reconstructed only under IR illumination
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/04—Processes or apparatus for producing holograms
  • G03H1/0402—Recording geometries or arrangements
  • G03H2001/043—Non planar recording surface, e.g. curved surface
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/04—Processes or apparatus for producing holograms
  • G03H1/0402—Recording geometries or arrangements
  • G03H2001/0434—In situ recording when the hologram is recorded within the device used for reconstruction
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H2270/00—Substrate bearing the hologram
  • G03H2270/30—Nature
  • G03H2270/31—Flexible

Definitions

• the invention is based on the finding that by shaping the above-specified volume hologram layer, an optically variable effect can be generated, which differs from the aforementioned known optically variable effects. While at previous
• Volume hologram stored in so-called Bragg planes and contain the holographic information as a variation of the refractive index of the material.
• the defined area occupied by the area is determined in the non-bent state of the security element.
• Further advantageous embodiments of the invention are in the
• the grid width is smaller than the resolution limit of the unarmed human eye, in particular that the grid is less than 300 ⁇ , preferably less than 150 ⁇ , is.
• Generating the first information in the first predefined bent state of the security element in the first viewing situation contributes.
• the alignment of the Bragg planes in the two or more first zones in the flat state is not equal to each other.
• the third volume hologram is formed such that a fourth information in a third predefined bent state of the security element for a viewer in the first
• the second volume hologram is formed such that a fifth information in the unbent state of the security element in the first
• the security element in at least a third area a relief structure selected from the group diffractive grating, Kinegram® or hologram, Blazegitter, binary grating, multi-level
• the reflection layer no longer completely covers the first volume hologram, so that the first volume hologram becomes visible or at least partially visible.
• Volume hologram layer and the partially metallized and / or screened reflection layer has a transparent spacer layer
• Security element two grid-shaped, preferably partially metallized
• the reflection layer and / or the reflection layers can be formed by a transparent reflection layer, preferably a thin or finely structured metallic layer or a dielectric HRI or LRI layer (high refraction index - HRI, low refraction index - LRI).
• a transparent reflection layer preferably a thin or finely structured metallic layer or a dielectric HRI or LRI layer (high refraction index - HRI, low refraction index - LRI).
• a dielectric HRI or LRI layer high refraction index - HRI, low refraction index - LRI
• Integrate volume holograms in the volume hologram layer which show different optical effects in the bent state when viewed from the front and the back of the security document. These different optical effects can either be seen if the bend is kept the same, ie once convex and once concave. The different effects can also be seen, though
• Fig. 5a, b and Fig. 6a, b show schematically bending variants of a
• Fig. 8 shows a diagram showing bending variants
• Fig. 9b shows a schematically and simplified represented
• Fig. 12 shows schematically an example of an application
• Fig. 17 shows a schematic representation of characteristics for
• FIG. 18 shows the dependence of the determined line widths and line distances on the angle of curvature each show schematically a flat
• Security element shows a plan view of a section of a line grid executed layer shows a plan view of a section of a screened layer of areal
• FIG. 27 shows schematically a flat security document with a security element Fig. 28a to 28d show a possible manufacturing method for in
• Transfer film is provided so that an application of the
• Lighting device 8 for example, the sun, illuminated. As shown in FIG. 2a, light from the security element 1 passes here under the different viewing angles CM, C (2 and 03 into the eye of FIG.
• Security element 1 enters the eye of the observer 7, such that the angles CM ', C ⁇ ' and 03 'are all smaller in the tilted state of the security element 1.
• the horizontal axis which here corresponds to the x-axis, away from the viewer, thus all reduce
• Security element 1 on a changed geometry also means buckling, so that a bent security element 1 can have one or more break points or bend lines, on which the security element 1 is sharply or abruptly bent in Fig. 3a.
• bending also means buckling, so that a bent security element 1 can have one or more break points or bend lines, on which the security element 1 is sharply or abruptly bent in Fig. 3a.
• Level at which security document 2 along the section A - B shown in Fig. 1 in a side view as in Fig. 2a, wherein light from the security document 2 arranged on the security element 1 in this case under the different viewing angles CM, C (2 and 03 in the eye If the security element 1, as shown in Fig. 3b, bent around the bending point 9 of the viewer 7 or
• the viewing angles ⁇ ⁇ and 03 ', under which light from the security element 1 enters the eye of the viewer 7, on different sides of the bending point 9 change in different ways.
• the viewing angle ⁇ ⁇ smaller, whereas the
• Security document 2 and arranged thereon security element 1 are bent around the horizontal axis.
• FIG. 6b shows the security document 2 with the security element 2 and the security element 1 arranged thereon bent about the vertical axis is bent around the bending line 9, as shown in Fig. 6b.As already explained change here in the bent state of the security element 1, the
• the volume hologram layer 1 1 is preferably a layer of a photopolymer, in particular of Omni DX 796 from DuPont, Wilmington, United States of America. Further, it is also possible that the volume hologram layer 1 1 is formed of a silver halide emulsion or dichromated gelatin.
• the layer thickness of the Volumenhologramm für 1 1 is preferably between 3 ⁇ and 100 ⁇ , in particular mussl O ⁇ and 30 ⁇ .
• This three-dimensional refractive index pattern can be generated by a holographic interference arrangement, for example by a structure in which a coherent light beam, in particular a laser source, on a arranged on the volume hologram layer 1 1 master with a
• Security elements 1 is here referred to the above statements. That in the Volume hologram layer 1 1 introduced volume hologram is thus designed for a predetermined bent state of the security element.
• the volume hologram has the zones 10a, 10b and 10c, the zones 10a, 10b and 10c providing information to the viewer 7 in a predefined bent state of the security element 1 in a viewing situation.
• bending variants 801 shown in FIG. 8 can be further specified.
• bending variants 801 may be further specified by means of the bend radius, the above-described geometric characteristics of the curved state of the security element, or by the mathematical Laplace function.
• Fig. 8 represents only one possible division, further divisions are possible.
• the divisions can therefore determine the predetermined bent state of the security element, in which as described above a Information for a viewer in a viewing situation is visible and in the unbent state of the security element in the
• volumenhologramm Mrs 1 1 applied.
• the volume hologram layer 11 is preferably applied to the carrier layer 16 by printing, casting, eg slot casting or knife coating.
• the Volumenhologramm Mrs 1 1 consists for example of Omni DX 796 DuPont, Wilmington, United States of America and has a layer thickness between 3 ⁇ and 100 ⁇ on.
• the layer thickness of Volunnenhologrannnn für 1 1 in Fig. 10a is for example 25 ⁇ .
• Barrier layer and / or at least one stabilizing layer and / or at least one adhesive layer in particular comprising acrylates, PVC, polyurethane or polyester.
• FIG. 11 a shows the photographed volume hologram in the flat state and FIG. 11 b shows the photographed volume hologram in FIG
• Volumenhologramm Mrs 1 1 to be written volume hologram is visible only in the bent state for the viewer.
• the master 18 can have at least two partial regions which reflect or diffract incident light into at least two different zones of the volume hologram layer 11.
• the subregions are in this case designed such that they reflect and / or diffract the incident light in a predetermined angular position, which is determined in such a way that the desired alignment of the Bragg planes in the volume hologram layer 1 1 arises.
• the angular position into which the at least two subregions reflect and / or diffract the incident light beam are different on the one hand and also depend on the angular position in which the coherent light beam 19 is radiated onto the at least two subregions.
• deflection angle is to be understood as the angle by which the surface structure of the master 18 in the respective subregion is perpendicularly incident
• the information generated by the volume hologram in the bent state of the security element appear in different colors and / or are visible in different viewing situations.
• the surface structures of the master 18 partially provide no information.
• the areas of the master 18 that do not provide information may be used as a background structure.
• Such background structures can be so for example be formed so that stray light and / or disturbing reflections are reduced.
• the master 18 has a symmetrical lattice structure in a first partial region and a first asymmetric lattice structure, in particular a blazed lattice, in a second partial region, wherein the lattice periods and / or lattice depths of the lattice structures differ in the first and second partial regions , Furthermore, the master 18 can, in a third subregion, have a second asymmetrical lattice structure,
• FIGS. 13a to 13i show schematically application examples of FIG.
• FIGS. 13a to 13i show possible optically variable effects of FIG.
• the Bragg planes are thus oriented in the zone of the volume hologram layer forming the letter B in such a way that the letter B is visible to the observer both in the unbent state and in the predefined curved state. If the security element 1 is bent into the predetermined bent state, further information 21 is available to the viewer
• predefined bent states of the letter B comparatively clearly recognizable.
• the viewer in a first predefined bent state of the security element 1, in addition to the letter B, the viewer only sees the information 22, which represents the letter A.
• the information disappears 22, but now is for the viewer in addition to the letter B, the information 40, which the Letters C represents recognizable.
• the volume hologram has in this case, therefore, two information 22, 40, which in two different
• FIG. 13c corresponds to FIG. 13b with the difference that now the letter A can be recognized by the observer both in the non-bent state and in the two bent states.
• the information 23, 41 is here on the same side of the bending line of FIG. 13b.
• Such a security element 1 can be produced for example by means of a master whose surface structure
• the azimuth angle of the grating may be, for example, 0 °, the line density being adjusted according to the curvature of the security element 1 in the bent states.
• the line density in the portion which is to represent the letter A in the volume hologram to be written may be 600 lines / mm, and 1000 lines / mm in the portion which is to later represent the letter B.
• the line density may for example be 1400 lines / mm.
• FIG. 13d corresponds to FIG. 13b with the difference that the information 24 and 42 light up in respectively different colors. As already explained, This can be different during the production of the security feature 1, for example by exposure to coherent light beams
• Fig. 13e shows an optical effect perceivable to the viewer when bending the security element 1 around the horizontal axis into a convex shape.
• Security elements 1 the color. It does not change the subject or it does not appear to the viewer a new motive in a bending for the viewer, but only the color impression of the perceptible information changes. Such an effect can be achieved for example by two nested volume holograms. The first
• Volume hologram is as explained above formed such that the information 25 in the bent state of the security element 1 is visible to the viewer in a different color than in the unbent state.
• the second volume hologram is a
• Volume hologram which is designed such that the information 25 is already visible in the unbent state of the security element 1. However, the information 25 generates in the unbent state of the
• the first volume hologram is preferably in at least a first area of the volume hologram layer and the second volume hologram in at least a second area of the volume hologram
• Fig. 13g corresponds to Fig. 13a with the difference that the
• Security document 2 has a pressure 60, which is supplemented by bending the security element 1 in a predefined bent state by the then visible to the viewer information 27 of the volume hologram.
• the volume hologram and the print are aligned register exactly with each other.
• the pressure 60 shows the information which becomes visible to the viewer when bent into the predefined bent state of the security element 1.
• the security element 1 it is possible for the security element 1 to be applied to a pressure 60 already applied to the security document 2.
• the pressure 60 can in this case again show the information which becomes visible to the viewer when bending into the predefined bent state of the security element 1 or the information of the pressure and that of the volume hologram are complementary. In the two last-mentioned cases, the pressure thus forms a reference for the information recognizable to the viewer only in the bent state of the security element 1.
• pressure and volume hologram are designed so that when bending the security document a word
• Fig. 13h shows a security document 2 with a security element 1, wherein the security element 1 in two different curved
• FIG. 13i shows a security document 2 with a security element 1.
• the security element 1 generates in the unbent state for the viewer a design with two dark rectangles, the rectangles appear blue, for example in the color against a white background.
• the bent state of the security element 1 changes both the recognizable for the viewer design and the color impression.
• the dark rectangles vanish and a strip-shaped color impression, for example of two red and one white stripes, is produced for the viewer.
• Security element 1 in particular the volume hologram layer of the security element 1, is here referred to the above statements.
• the security element 1 in the square areas 50 a is here referred to the above statements.
• the reflective layer is preferably a metal layer of aluminum, chromium, gold, copper, silver or an alloy thereof Metals, which is evaporated in a vacuum in a layer thickness of 0.01 ⁇ to 0.15 ⁇ .
• the reflection layer is preferably first applied over the entire surface. Subsequently, the reflective layer is removed again by surface area by means of known structuring methods (by means of etching resist, by means of photoresist, by means of a washing process), so that partial metallization in the regions 50 is produced. As shown in FIG. 13i, the regions 50 form a motif, for example in the form of squares. The areas 50 are thus visible to the viewer regardless of the bending of the security element 1 and thus complement each other with the effects of the security element 1, which is a function of the bending of the
• FIG. 13 j shows a security document 2 with a security element 1.
• the security element 1 shows this optical effects, which both a
• the volume hologram which in the bent state generates the information 29 in the form of the three-dimensional impression of the motif, may for example be a CGH calculated for a curved surface as it is in the bent state.
• this volume hologram can also be a 3D hologram, which is based on a master, which, as explained above, is based on a curved-exposed intermediate master.
• Fig. 14 schematically shows an example of application of a security element 1 with a volume hologram layer.
• a volume hologram is introduced in a region 51, which is formed in such a way that complete image information is only visible in a bent state of the security element 1.
• part of the information 30u is already in the unbent state of FIG. 14
• the region 52 is configured in the form of a pattern in the form of a flame motif.
• the relief structure is, for example, a binary or continuous Fresnel-like free-form surface, which is characterized in particular by the fact that it
• Replizierlack Anlagen has in particular a layer thickness between 0.1 ⁇ and 20 ⁇ , preferably 0.2 ⁇ and 10 ⁇ , more preferably 0.4 ⁇ and 5 ⁇ on.
• the security element 1, in particular in the area 50 has a reflection layer.
• the reflective layer is preferably a metal layer of aluminum, chromium, gold, copper, silver or an alloy of such metals, which is evaporated in a vacuum in a layer thickness of 0.01 ⁇ m to 0.15 ⁇ m.
• FIGS. 15 a to 15 c schematically show the bending of a security document 2 with a security element 1.
• the security element 1 is applied to the substrate 17 by means of the adhesive layer 15.
• the substrate 17 is preferably a substrate 17
• the second information may be, for example, an open flower of a flower.
• the Bragg planes in the zones 10k are aligned in such a way that the second information in the second predefined bent state is visible to the viewer 7.
• the lacquer layer 1711 is preferably transparent and has a layer thickness between 0.1 ⁇ m and 10 ⁇ m, preferably between 0.3 ⁇ m and 1 ⁇ m, more preferably between 0.5 ⁇ m and 1 ⁇ m.
• the resist layer 1712 is preferably a transparent spacer layer disposed between the volume hologram layer 11 and the reflection layer 17r.
• the reflection layer 17r is preferably a
• reflection layer 17r is applied only in regions, so that a partial metallization or partial coating is present.
• the reflection layer 17r can first be applied over the entire surface and subsequently by means of known structuring methods (for example by means of etching resist, by means of photoresist, by means of washing methods)
• Reflection layer 17r are arranged.
• the regions with the volume hologram 11 are preferably arranged in the register with the reflection layer.
• the grid is thus preferably also a line grid, which is arranged in particular register-accurate with the line grid of the reflection layer 17r.
• the adhesive layer shown in Fig. 16a and 16b has a layer thickness of 2 ⁇ on.
• Volume hologram can be visible and from the volume hologram 1 1 v diffracted and / or reflected light 14 at the reflection layer 17r can pass to the viewer. For the viewer, the volume hologram 1 1 v is then at least partially visible in the predefined bent state of the security element 1. On the security element 1 incident light 19e passes through the partially metallized reflection layer 17r to the
• volume hologram 1 1 v is there reflected and / or diffracted and can now at least partially pass the reflection layer 17r to the viewer due to the bending of the security element 1.
• the line widths and line spacings of the rasters of the reflection layer 17r and / or the volume hologram 11 are 1 and v
• Curvature angles also increase the widths and distances of the grid.
• the spacer layer or lacquer layer 1712 may not be provided with a constant thickness, as shown in FIGS. 16a and 16b, but with a variable thickness. This is shown for example in FIG. 19.
• the thickness of the spacer layer increases.
• the thickness of the spacer layer changes perpendicular to the bending line.
• the bendline extends out of the leaf level. It is advantageous if the spacer layer in the region of the bending line or along the bending line has the greatest layer thickness and the layer thickness decreases or becomes smaller with distance from the bending line. This means, in particular, that in the region of small bending angles a greater layer thickness of the spacer layer and in the region of greater bending angles a smaller layer thickness of the
• the advantage is that, by varying the thickness of the spacer layer, the line widths and line spacings of the screens of the reflection layer 17r can be made more uniform and thus the volume hologram 11b is equally well visible at all points in the bent state and, moreover, the appearance of the metallization is more uniform ,

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• 2017
  • 2017-02-27 EP EP17707332.7A patent/EP3426496A1/de not_active Withdrawn
  • 2017-02-27 WO PCT/EP2017/054514 patent/WO2017153196A1/de not_active Ceased
  • 2017-02-27 JP JP2018547351A patent/JP2019512732A/ja active Pending
  • 2017-02-27 CA CA3016661A patent/CA3016661A1/en not_active Abandoned
  • 2017-02-27 US US16/083,207 patent/US20190092081A1/en not_active Abandoned
  • 2017-02-27 AU AU2017230258A patent/AU2017230258A1/en not_active Abandoned
• 2021
  • 2021-09-17 US US17/477,986 patent/US20220105743A1/en not_active Abandoned

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