EP3980275A1 - Élément de sécurité de vérification - Google Patents

Élément de sécurité de vérification

Info

Publication number
EP3980275A1
EP3980275A1 EP20732156.3A EP20732156A EP3980275A1 EP 3980275 A1 EP3980275 A1 EP 3980275A1 EP 20732156 A EP20732156 A EP 20732156A EP 3980275 A1 EP3980275 A1 EP 3980275A1
Authority
EP
European Patent Office
Prior art keywords
see
area
security element
security
partial areas
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.)
Pending
Application number
EP20732156.3A
Other languages
German (de)
English (en)
Inventor
Juri Attner
Philipp Schuler
René Staub
Harald Walter
Klaus Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OVD Kinegram AG
Leonhard Kurz Stiftung and Co KG
Original Assignee
OVD Kinegram AG
Leonhard Kurz Stiftung and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by OVD Kinegram AG, Leonhard Kurz Stiftung and Co KG filed Critical OVD Kinegram AG
Publication of EP3980275A1 publication Critical patent/EP3980275A1/fr
Pending legal-status Critical Current

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
    • B42D25/351—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
    • B42D25/324—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
    • B42D25/36—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
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/445—Marking by removal of material using chemical means, e.g. etching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/364—Liquid crystals

Definitions

  • the invention relates to a see-through security element, a method for producing a see-through security element and a security document with a see-through security element.
  • the task is achieved by a see-through security element with a front side formed by a first main surface of the see-through security element and one by a second main surface of the see-through security element
  • the see-through security element has at least a first area and / or at least a second area, when viewed perpendicular to the plane spanned by the first main surface, the see-through security element having a first element which has one or more transparent first partial areas and at least one having reflective second partial area, wherein the see-through security element has a second element which has one or more first partial areas, which in transmission each form a color filter matched to a respective assigned color, and has at least one second partial area which is colorless, in particular colorlessly transparent or forms a color filter in transmission and / or reflection which is matched to a color which is not one of the one or more first sub-areas of the second
  • Element is assigned, wherein the first sub-areas of the first element and the first sub-areas of the second element when viewed perpendicular to the plane spanned by the first main surface at least partially overlap.
  • one or more layers of paint are preferably applied to the first element, which by means of
  • Exposure are changeable in their solubility and / or color filter effect, and the one or more color layers exposed through the first element using the first element as an exposure mask.
  • the invention has the advantage that the security against forgery of
  • the invention makes it possible to provide see-through security elements which show colored features when viewed through transmitted light and, in particular, show a different colored appearance and / or different motifs when viewed through reflected light and transmitted light. Due to the provision of these various security features by the linked elements of the
  • the first partial areas of the first element and the first partial areas of the second element are preferably perpendicular to that of the first main surface when viewed
  • Spanned plane is arranged in register with one another in such a way that a first colored feature is visible in the first area when viewed through transmitted light, which, in particular, when viewed from the front and rear side is not or almost invisible.
  • the first feature in transmitted light is, for example, a single or multiple colored design element which can be seen in transmitted light and not or almost not to be seen in incident light.
  • Register or register or register accuracy or register accuracy is preferably to be understood as a positional accuracy of two or more elements and / or layers, here in particular the elements and / or subregions.
  • the register accuracy should move within a specified tolerance and be as low as possible. At the same time, the register accuracy of several elements, sub-areas, in particular one or more
  • Foil elements, foils, plies and / or layers to one another are important
  • markings in particular by means of sensor marks, preferably optically detectable registration marks or register marks.
  • markings in particular registration marks or register marks, preferably represent either special separate elements or areas or layers or are preferably themselves part of the elements or areas or layers to be positioned.
  • a colored feature preferably represents a feature which, at least in some areas, has one or more colored areas, i. H. has areas colored in one color.
  • a colored feature can have several colorless areas one after the other, which for example appear light or dark.
  • the color of transmitted or reflected light can be quantified by specifying a color locus in a color system.
  • the color of a feature or a sub-area of a feature is determined by the Chroma or chromaticity C * described in the CIEL * a * b * color space.
  • the L * value which is perpendicular to the color plane (a * b *), is a measure of the brightness of the color.
  • a colored feature in transmitted light when viewed perpendicularly, preferably has at least a partial area that has a chroma C * greater than 10, particularly preferably C * greater than 20.
  • the standard illuminant D65 and the 10 ° CIE standard observer are assumed as the light source.
  • the one or more first partial areas of the first element are each completely enclosed by the at least one second partial area of the first element, and / or the one or more first partial areas of the second element are each completely enclosed by the at least one second partial area of the second element enclosed.
  • the one or more first partial areas of the first element provided there and / or the one or more first partial areas of the second element provided there each have a dimension of less in at least one lateral direction than 500 m ⁇ p, preferably less than 300 gm. More preferably, in the first area, the one or more first subareas of the first element and the one or more first subareas of the second element each have a dimension between 5 gm and 300 gm, preferably between 10 gm and 200 gm, more preferably in at least one lateral direction between 15 gm and 150 gm.
  • a lateral direction is understood here to mean a direction which lies in the plane spanned by the first main surface of the see-through security element.
  • the subregions when viewed perpendicular to the plane spanned by the first main surface of the see-through security element, the subregions have a width dimension of less than 500 gm, preferably less than 300 gm, and possibly also a length dimension of less than 500 gm, preferably less than 300 gm on.
  • Visibility of the first colored feature is sufficiently preserved in transmitted light viewing, and on the other hand the first colored feature is almost not recognizable when viewed from the front and / or rear side when viewed using incident light.
  • the one or more first sub-areas of the first element and the one or more first sub-areas of the second element each have a dimension of more than 300 gm, preferably of more than 500 gm, particularly in at least one lateral direction preferably of more than 700 gm.
  • the first partial areas of the second element are each congruent with an assigned partial area of the first element when viewed perpendicular to the plane spanned by the first main surface. This further increases the color contrast between the optical appearance of the first area in incident light viewing and transmitted light viewing.
  • the first partial areas of the first element of a first group of first are preferably in the first area of the see-through security element
  • Sub-areas and a second group of first sub-areas assigned are assigned.
  • the one or more first sub-areas of the first element which are assigned to the first group each overlap with an assigned first
  • Partial area of the second element congruent when viewed perpendicular to the plane spanned by the first main surface.
  • the one or more first sub-areas of the first element which are assigned to the second group each overlap with the at least one second sub-area of the second
  • transmitted light viewing which is multicolored and has differently colored sub-areas and / or has colorless sub-areas in addition to colored sub-areas.
  • the one or more first partial areas of the first element and the one or more first partial areas of the second element are each preferably in the form a line and / or a grid element formed. Studies have shown that a line-based design of the sub-areas can achieve particularly large contrast differences in incident and transmitted light viewing, especially when motifs or sub-motifs of the first feature are fine
  • One or more first partial areas of the first element and one or more first partial areas of the second element are therefore preferably in the form of a thin, continuous line or in the first and / or second area
  • Shaped sections of a line are preferably selected between 5 pm and 300 pm, preferably between 10 pm and 200 pm, more preferably between 15 pm and 150 pm.
  • the lines preferably each form a line of a motif or partial motif of the first feature.
  • the grid elements here preferably have a dimension between 5 ⁇ m and 300 ⁇ m in at least one lateral direction, preferably in all lateral directions, preferably between 10 gm and 200 gm, more preferably between 15 gm and 150 gm.
  • the grid elements can be square, circular disk-shaped, rectangular and / or elliptical and / or alphanumeric and / or
  • the grid elements be shaped motif-shaped grid elements.
  • the grid elements it is also possible for the grid elements to have any other shape and thus for example also to be in the form of an alphanumeric character, in particular in the form of a micro-script.
  • the first partial areas of the first and / or second element forming the raster elements are preferably arranged with respect to their spatial arrangement relative to one another in such a way that they form a motif or partial motif of the first and / or second feature and are thus provided, for example, in an area whose shape the shaping of the motif or part of the motif. It is also possible here for the grid width of the grid and / or the size of the grid points to be varied locally in order to vary the brightness of the partial motif or motif of the first feature accordingly locally. This also makes it possible to provide a first and / or second colored feature which not only has areas with different colors or chroma, but also with different brightness.
  • the grid width of the grid is preferably selected between 5 ⁇ m and 300 ⁇ m, more preferably between 10 ⁇ m and 200 ⁇ m, more preferably between 15 ⁇ m and 150 ⁇ m. Furthermore, it is also possible that the grid is a line-shaped grid in which the grid elements follow one another in the direction of a line. This makes it possible to combine the advantages of a line-based and area-based design of the first and / or second colored feature with one another.
  • the area proportion F of the one or more first partial areas of the first element is preferably less than 20%, preferably less than 10%, more preferably less than 5%.
  • the area fraction F is the ratio of the area of the first area which is occupied by the one or more first partial areas of the first element to the area of the first area which is occupied by the one or more first sub-areas
  • Sub-areas and the at least one second sub-area of the first element is occupied.
  • the first area of the see-through security element is preferably the smallest possible rectangular area at which each edge of the rectangular area adjoins the first feature at at least one point, when viewed perpendicular to that of the first main area
  • the advantage is achieved that the visibility of the first colored feature in reflected light viewing is reduced or preferably almost completely prevented and is only made possible in transmitted light viewing and this first colored feature is particularly clearly visible.
  • the at least one second partial area of the first element preferably completely encloses the first area of the see-through security element, when viewed perpendicular to the plane spanned by the first main surface.
  • the at least one second area of the first element preferably extends from the first area of the see-through security element by at least a distance d, when viewed perpendicular to the plane spanned by the first main surface, where d is greater than 0.5 mm, in particular greater than 0 .8 mm, more preferably greater than 1 mm.
  • the second partial area of the first element thus encloses the first area starting from the first area
  • At least one of the first sub-areas of the first element and at least one of the first sub-areas of the second element when viewed perpendicular to the plane spanned by the first main surface, are arranged in such register with one another that in the second area, when viewed through transmitted light, a second colored A feature becomes visible which is directly adjacent to a third feature that is visible in reflected light viewing from the front and / or rear.
  • See-through security element at least one of the first sub-areas of the second element with a first sub-area of the first element when viewed perpendicular to the plane spanned by the first main surface such that the at least one first sub-area of the second element only partially overlaps the first sub-area of the first element, preferably around overlaps less than 50%, more preferably less than 30% overlap.
  • the shape of the first element differs. It is also advantageous here, when the at least one first partial area of the second element differs from the shape of the overlapped first partial area of the first element
  • Transmitted light viewing is further improved.
  • the at least one first partial area of the second element despite the formation of a different motif, preferably adjoins the at least one second partial area of the first element in some areas largely directly, preferably without an overlap and without a visible gap.
  • the first partial areas of the second element each have an overlap of not more than 100 ⁇ m, preferably not more than 50 ⁇ m, more preferably not more than 10 ⁇ m with the at least one second partial area of the first element, when viewed perpendicular to that of the first
  • the first sub-areas of the second element not with the at least one second sub-area of the first element, when viewed perpendicular to the plane spanned by the first main surface.
  • the first and / or second area Preferably in the first and / or second area the
  • This has the advantage that, on the one hand, the color contrast between incident light and / or
  • Transmitted light viewing can be improved and further
  • a third feature determined by at least one of the second partial areas of the first element is visible in reflected light viewing from the front and / or a third feature determined by at least one of the second partial areas of the first element in reflected light viewing from the rear .
  • the third features visible from the front and back in incident light observation preferably differ from one another, in particular in their color. This will make the
  • the at least one second sub-area of the first element preferably has an optical density of more than 0.8 OD, preferably more than 1.1 OD, more preferably more than 1.3 OD and particularly preferably more than 1.5 OD, averaged over the visible wavelength range.
  • the colors visible to humans are in the range between 380 nm [violet] and 780 nm [deep red] of the electromagnetic spectrum, with the relative sensitivity of the eye below 430 nm and above 690 nm less than 1% of the
  • the visible wavelength range is understood here to mean, in particular, the wavelength range between 430 nm and 690 nm.
  • the one or more first partial areas of the second element preferably have an associated L * value when measured in transmission
  • the at least one second sub-area of the first element has, in particular based on a pure mirror surface, a reflectivity averaged over the visible wavelength range of more than 40%, more preferably of more than 70%.
  • reflectivity is understood to mean the portion of the incident light which is reflected back, backscattered or bent back.
  • Transparent means, in particular, averaged light transmittance in at least one wavelength range of visible light, preferably in the visible wavelength range (in particular between 430 nm and 690 nm), and in particular understood in the entire spectrum of visible light of more than 30%, more preferably of more than 50%, preferably of more than 80%. This light transmission is preferably measured perpendicularly through the security element.
  • the one or more first sub-areas of the first element are
  • reflective is understood to mean that more than 10%, more preferably more than 20% of the light incident on the one or more first partial areas is reflected, backscattered or bent back from the front and / or back when viewed from the front, for at least one wavelength range, preferably averaged over the visible wavelength range (in particular between 430 nm and 690 nm).
  • the one or more first sub-regions of the first element can, for example, by applying a high-index material, e.g. E.g. ZnS or T1O2, or by applying a very thin metal layer, e.g. an aluminum layer with a transmission in the range from 0.1 OD to 0.5 OD, are reflective.
  • the at least one second partial region of the first element is preferably formed by at least one metallic layer or a sequence of layers comprising at least one metallic layer.
  • the at least one metallic layer is preferably not provided and / or removed in the one or more first subregions of the first element.
  • the at least one second partial area of the first element preferably has a second relief structure and at least one reflective layer which follows the contour of the relief structure on at least one main surface, preferably on both main surfaces.
  • the reflective layer is preferably a metallic layer.
  • the second relief structure in combination with the reflective layer, preferably provides an optically variable third feature, in particular in the first and / or second area of the see-through security element. It is also possible here for the at least one second partial area of the first element to have not only one reflective layer that is on at least one
  • Main area follows the contour of the relief structure, but preferably two or more reflective layers of this type are provided, which preferably follow different relief structures on at least one main surface. This makes it possible to generate different, optically variable third features when viewed from the front and rear side, and thus further improve the security element's security against forgery.
  • the see-through security element preferably also has a third element which has one or more transparent first partial areas and at least one reflective second partial area.
  • the second element is in
  • See-through security element in this case preferably arranged between the first element and the third element, in particular when viewed perpendicular to the plane spanned by the first main surface.
  • the third element is preferably designed like the first element, so that reference is made to the previous explanations relating to the first element.
  • the one or more transparent first partial areas of the first element and the one or more transparent first partial areas of the third element preferably overlap at least in some areas, in particular overlap congruently. It is also advantageous if the at least one reflective second sub-area of the first element and the at least one reflective second sub-area of the third element overlap at least in areas, preferably overlap congruently, when viewed perpendicular to that of the first
  • the optical appearance of the see-through security element in incident light viewing from the front and rear shows a correspondingly different optical effect and, moreover, the previously described advantages of the invention, in particular the previously described incident light / transmitted light behavior, are retained.
  • first partial areas of the second element at least partially overlap the at least one second partial area of the first element and / or of the third element.
  • first partial areas of the second element which in transmission each form a color filter matched to a respective assigned color, to be provided by a colored lacquer layer, this colored lacquer layer partially and partially with the second areas of the first Element and / or third element is applied overlapping.
  • the colored lacquer layer is preferably between the two opaque and
  • One or more first partial areas of the first element preferably have a first relief structure.
  • the first relief structure is preferably a relief structure which has an optically variable effect when viewed through transmitted light. This makes it possible to integrate further optically variable effects in the first and / or second feature.
  • the first and / or second relief structure is preferably a relief structure which generates an optically variable effect.
  • These relief structures are preferably a relief structure selected from: diffractive structure, in particular hologram, zero-order diffraction grating, matt structure, in particular anisotropic matt structure, achromatic structure, in particular a micro lens structure, micro mirror structure or micro prism structure.
  • Movement effects and / or color change effects are preferably provided as optically variable effects. Investigations have shown that this further obscures the visibility of the first feature in incident light viewing for the human observer.
  • the at least one second partial area of the first element preferably has a color shift effect when viewed from the front and / or rear side.
  • the at least one second sub-area of the first element points to this
  • a thin film layer stack for generating a color shift effect by means of interference and / or at least one liquid crystal layer and / or one or more layers comprising optically variable pigments, in particular
  • This volume hologram preferably provides optically variable effects in the third feature when viewed from the front and / or rear side. This measure also further improves the security against forgery.
  • the at least one second partial area of the first element preferably has one or more lacquer layers which are colored in particular by means of a colorant, in particular a dye and / or a colored pigment.
  • the measures described above for forming the at least one second sub-area of the first element can be combined with one another in any way.
  • the layers proposed above for this purpose can also only be provided in areas and in particular in pattern form in the at least one second sub-area of the first element, so that the effects described above are only provided in areas by the at least one second sub-area of the first element.
  • the layers specified above for this purpose are preferably not provided or removed in the one or more first partial areas of the first element in order to make the one or more first partial areas of the first element transparent.
  • the see-through security element may have one or more further color filter layers which at least partially overlap the one or more first subregions of the second element, when viewed perpendicular to that of the first main surface of the
  • the color or the colors of the first colored feature preferably does not match any color which the see-through security element shows in the first area in incident light viewing from the front and / or rear.
  • the recognizability of the first colored feature is further improved and, as a result, the security against forgery of the see-through security element is further improved.
  • the first and / or second colored feature are monochrome. This is preferably achieved in particular in that in the first and / or second areas of the see-through security element, the same color is assigned in each case in one or more first partial areas of the second element.
  • a monochrome configuration of the first and / or second feature improves the recognizability of the first and / or second colored feature.
  • the first and / or second colored feature is multicolored and has partial areas with different colors.
  • the first partial areas of the second element are preferably assigned to two or more groups of partial areas.
  • Each of the groups of first partial areas is assigned a respective color.
  • the colors assigned to the groups differ from one another.
  • the color filters, which are formed in the respective first partial areas are matched to the respectively assigned color.
  • a first group of first partial areas of the second layer is assigned a first color
  • a second group of first partial areas of the second layer is assigned a second color
  • optionally a third group of first partial areas of the second layer is assigned a third color.
  • the first, second and third colors are different from each other.
  • the one or more first partial areas of the second element are preferably formed by at least one translucent color layer, or a sequence of layers comprising at least one translucent color layer.
  • the at least one translucent color layer is preferably not provided and / or removed in at least a second partial area of the second element.
  • the translucent color layer preferably consists of a lacquer, in particular a photoresist, which is colored with a colorant, in particular a dye or pigment, in such a way that the color layer forms a color filter in transmission which is matched to the assigned color.
  • the second element further preferably has a photochromic layer or is formed by a photochromic layer which is in the one or more first partial areas of the second element is activated by irradiation and the at least one second partial area of the second element is not activated, or vice versa.
  • the activation of the photochromic layer takes place here preferably by means of irradiation with a wavelength outside of visible light, for example by means of UV radiation.
  • the photochromic layer is formulated accordingly in order to provide the corresponding color filter effects, as described above, correspondingly after exposure in the one or more first partial areas of the second element and the at least one second partial area.
  • Exposure mask for structuring one or more layers of the second element. This makes it possible to “position” the first and / or second partial areas of the second element in register with the first and / or second partial areas of the first element and thereby to achieve the effects described above.
  • the first element preferably has at least one or more metal layers. These one or more metal layers are preferably removed in the one or more first partial areas of the first area by means of demetallization in order to achieve the above-described optical properties in the one or more first partial areas.
  • one or more layers of color are preferably printed on using a printing process
  • the one or more colored layers are preferably next to one another and / or also printed overlapping on the first element. In this case, it is also advantageous if two or more different color layers are printed on, in particular color layers are printed on which are each in
  • transmission color filters that are matched to different colors. These two or more different colored layers can be applied to the first element lying next to one another and / or partially overlapping one another.
  • the one or more colored layers are preferably each formed from a colored, negative radiation-sensitive or radiation-activated photoresist and / or from a photochromic material, as already explained above.
  • one or more, in particular colored, blocker layers are additionally applied to the first element, in particular
  • a blocker layer is understood here to mean a layer which is “impermeable” to the wavelength used for the exposure or irradiation in such a way that any underlying photoresist layers and / or photochromic layers are not activated by the exposure.
  • the blocker layer like the colored photoresist layer, can use
  • Digital printing for example by means of inkjet printing, can be partially applied. This allows individual identifications of individual see-through security elements to be generated.
  • a colored photoresist layer can also be applied over the entire surface and the
  • Exposure can only be carried out partially. This exposure can take place, for example, via a mask and / or by means of controllable UV light-emitting diodes.
  • the one or more colored layers are then correspondingly exposed by the first element, whereby a corresponding activation of the photochromic layer or, in particular, the negative photoresist occurs in register with the one or more first partial areas of the first element.
  • the security element is preferably designed as a laminating film, a transfer film or an inlay.
  • the see-through security element preferably has the shape of a
  • the see-through security element can, however, also over the entire area in one
  • Security document for example an ID document, can be provided.
  • the see-through security element is preferably integrated as a security element in a security document, for example in an ID document, in a bank note, in a security and / or in a certificate. It is advantageous here if the security document has a transparent or translucent layer structure at least in some areas or has one or more recesses in the form of windows.
  • the see-through security element is applied to the security document and / or integrated into the layer structure of the security document in such a way that the see-through security element at least has a transparent or translucent area of the security document and / or one or more of the windows made in the security document overlapped in areas, when viewed perpendicular to that of the first
  • the see-through security element is applied to or integrated into a security document so that it does not overlap with a transparent or translucent area of the security document and / or with one or more of the windows made in the security document. It is advantageous here if the security document is still sufficiently translucent in the area of the applied see-through security element so that the see-through security element can still be checked, similar to a watermark on a bank note. A sufficiently translucent one
  • a security document is, for example, a paper bank note, since it is one that is visible to the human eye when it is held against a bright light source
  • FIGS. 1 a and 1 b show a plan view of a security document with a see-through security element.
  • Fig. 1c shows a plan view of a see-through security element.
  • 1 d shows a sectional view of a see-through security element.
  • Fig. 2 shows a plan view of a see-through security element.
  • 3 shows a plan view of a see-through security element.
  • FIGS. 4a and 4b each show a plan view of a
  • FIGS. 5a to 5d each show a plan view of a
  • FIGS. 6a and 6b each show a plan view of a
  • FIG. 7a and 7b each show a plan view of a section of a see-through security element.
  • Fig. 8a shows a plan view of a section of a
  • Fig. 10 shows several top views of respective sections of a
  • FIGS. 11a to 11f each show sectional views to illustrate a method for setting up a see-through security element.
  • FIGS. 12a to 12f each show sectional views to illustrate a method for setting up a see-through security element.
  • 13a to 13h each show sectional views to illustrate a method for setting a see-through security element.
  • 14a to 14f each show sectional views to illustrate a method for setting up a see-through security element.
  • 15a to 15i each show sectional views to illustrate a method for setting a see-through security element.
  • FIG. 16 shows a plan view of a see-through security element and a section of this see-through security element.
  • 17a shows a sectional illustration of a security document with two see-through security elements.
  • 17b shows schematic top views of see-through security elements and image information.
  • 17c shows a sectional illustration to illustrate a method for setting up a see-through security element.
  • 18a and 18b each show sectional views to illustrate a method for setting a see-through security element.
  • 1 shows a schematic plan view of a security document 1.
  • the security document 1 is preferably a bank note. However, it is also possible that the security document 1 is, for example, an ID document, a certificate, a ticket.
  • the security document 1 has a substrate 10 in which a transparent window 11 is made.
  • the substrate 10 is preferably a paper substrate
  • the window 11 can be made in the substrate 10 in that a recess has been made in the substrate 10 of the security document 1 in this area and / or that the layers of the substrate 10 provided there are transparent in this area.
  • a window security element 2 is provided in the security document 1 in the area of the window 11.
  • the window security element 2 can, as indicated in FIG. 1 a, have a patch shape, for example a size of 28 mm ⁇ 21 mm.
  • the see-through security element 2 preferably overlaps the window 11 at least in certain areas and preferably covers that
  • See-through security element 2 here preferably a larger one
  • the window 1 completely overlaps and furthermore has an outer contour that differs from the window 11, here for example a rectangular outer contour with rounded corners compared to the circular boundary line of the window 11.
  • the security element 2 is here preferably applied to one of the main surfaces of the substrate 10, for example in the form of a lamination or transfer film on one of the main surfaces of the substrate 10.
  • Layer structure of the substrate 10 is integrated, for example by being introduced into a paper layer of the substrate, between two paper layers of the substrate 10 and / or, possibly also over the entire surface, between plastic layers of the substrate 10 during the manufacturing process.
  • the see-through security element 2 has a different shape.
  • the see-through security element 2 can be designed in the form of a security thread or security strip, which in particular spans the entire area of this security document from one longitudinal edge to another longitudinal edge.
  • the see-through security element may have the same size expansion as the substrate 10 and to be applied over the entire area to the substrate 10 or to be integrated between layers of the substrate 10. This is particularly advantageous when the security document 1 is a card-shaped security document, for example in the form of an ID document or the data page of a book-shaped document.
  • the security document 1 is preferably printed on the front and / or back and / or provided with further security elements.
  • the security document 1 has further security features 12 on the front side shown in FIG. 1 a.
  • the security features 12 are, for example, each an imprint with a security ink, for example an optically variable ink and / or further, preferably optically variable security elements which are applied to the substrate 10 or integrated into the substrate 10.
  • FIG. 1 a illustrates a schematic plan view of the front side of the security document 1
  • FIG. 1 b illustrates a schematic plan view of the front side of the security document 1
  • 1 b is a schematic plan view of the rear side of the security document 1.
  • the see-through security element 2 is applied to the front side of the substrate 10 in this exemplary embodiment.
  • a feature 33 in particular an optically variable feature 33
  • a feature 34 in particular an optically variable feature 34
  • the optically variable features 33 and 34 can represent identical motifs apart from a mirrored appearance.
  • the optically variable features 33 and 34 can, however, also represent different motifs.
  • FIG. 1 c shows, by way of example, the colored features 31 which become visible in a respective area 41 when viewed through transmitted light.
  • These colored features 31 are, on the one hand, a colored symbol in the form of a
  • Transmitted light viewing Become visible.
  • the colored areas are indicated by white lines in FIG. 1c.
  • the basic structure of the see-through security element 2 is shown schematically in FIG. 1 d:
  • the see-through security element 2 has a first main surface 201 and a second main surface 202 opposite it.
  • the Main surface 201 here forms the front of see-through security element 2 and main surface 202 forms the back of see-through security element 2.
  • the see-through security element 2 has a first element 21 and a second
  • This substrate layer 23 can also include several layers, for example one or more additional lacquer layers and / or adhesion promoting layers and / or release layers.
  • the carrier layer 23 preferably has one or more release or adhesion-promoting layers on its side oriented towards the lacquer layer 24. If one or more release layers are provided here, the see-through security element 2 is a transfer film.
  • adheredation promoting layers are provided here.
  • the see-through security element is a
  • Adhesion-promoting layers and / or the carrier layer 23 to be dispensed with This is particularly the case when the see-through security element 2 is arranged between one or more layers of the security document 1 and / or the window 11 is not covered by an opening in the substrate 10 of the
  • the lacquer layer 24 preferably consists of a protective lacquer layer and / or a lacquer layer in which a relief structure is molded. It is also possible here that two or more such lacquer layers 24 in the
  • See-through security element 2 are provided.
  • the lacquer layer 24 is preferably arranged between the carrier layer 23 and the first element 21 in the see-through security element 2.
  • the first element 21 has one or more first transparent partial areas 211 and at least one reflective, in particular highly reflective second partial area 212.
  • the first element 21 preferably has one or more metal layers, for example consisting of aluminum, copper, gold, silver, chromium.
  • the one or more metal layers of the first element 21 are preferably not provided or through in the one or more first partial regions 211
  • Demetallization is removed again, so that the transparency of the first element 21 in this partial area is not impaired by the one or more metal layers.
  • no layers of the first element 21 are provided in the one or more first subregions 211 of the first element 21 or only transparent layers of the first element 21 are provided.
  • the one or more metal layers it is also possible for the one or more metal layers to be provided in the one or more first partial regions 211 of the first element with a significantly smaller layer thickness than in the one or more second partial regions 212.
  • the one or more metallic layers are preferably applied in a layer thickness between 5 nm and 300 nm, more preferably between 10 nm and 100 nm, for example by means of a vapor deposition process, and
  • the one or more metallic layers are essentially or completely only present in the area of the one or more second partial areas 212, but not or at least only in a very small layer thickness in the area of the one or more first partial areas 211.
  • the first element 21 can also have one or more colored layers, in particular colored with metallic pigments, a thin-film layer system for producing
  • a relief structure is molded in one or more of the layers of the first element 21, which in particular generates an optically variable effect.
  • a relief structure for example a diffractive and / or refractive relief structure or a hologram
  • thermal replication and / or UV replication for example in register with the one or more second subregions 212 of the first element 21 will and through
  • a corresponding relief structure is formed on the surface of a metallic layer, which preferably generates optically variable effects when viewed from above.
  • the first element 21 can also have a preferably transparent lacquer layer, in which a corresponding relief structure is molded and which is then further provided on one or both sides with a reflective layer.
  • a corresponding relief structure can be molded in register with the one or more first subregions 211 and a transparent varnish layer with a different one in the one or more first subregions 211 at the interface with the varnish layer 24
  • Refractive index are applied, on the upper side of which the relief structure provided there is then correspondingly shaped inversely.
  • the relief structure in the one or more first partial areas 211 is preferably designed such that it generates diffractive and / or scattering effects, in particular optically variable effects, when viewed through transmitted light.
  • a full-surface metal layer is provided in the at least one second sub-area 212, in the front side of which diffractive and / or refractive microstructures are molded, which in reflected light observation of the Generate the front as feature 33 the representation of a sailboat on the water as well as the denomination 45 and the fictitious currency symbol ttf.
  • the feature 33 here preferably represents an optically variable feature so that, for example, the color and / or the position of the partial motifs of the feature 33, for example the
  • Sailboats the currency code, the denomination and the water changes when the see-through security element 2 is tilted and / or rotated.
  • Relief structures formed through both the front and the back of the one or more metal layers are obtained - as shown schematically in FIG. 1 b shown - a corresponding “mirror-inverted” optically variable impression, also when viewed from the rear, so that the feature 34 shows a corresponding optical impression.
  • Subareas 212 two or more reflective layers, in particular opaque metallic layers, are provided one above the other, in which
  • feature 34 can show a completely different motif or different partial motif, that is, for example, a completely differently designed sailing boat or a completely different motif, for example a portrait or a building or an endless pattern, such as for example a regular arrangement of many representations of denomination 45.
  • the one or more first subregions 221 of the second element 22, which in transmission each form a color filter matched to an assigned color, are provided by a colored lacquer layer , this colored lacquer layer being applied partially and partially overlapping with the second partial areas 212 of the first element 21.
  • a third element is provided further below the second element 22, which has one or more first transparent partial areas and at least one reflective, in particular highly reflective second partial area.
  • the one or more first transparent partial areas of the third element are here preferably like the one or more first transparent ones
  • Subregions 21 1 of the first element 21 are formed.
  • the at least one reflective second sub-area of the third element is preferably designed like the at least one reflective second sub-area 212 of the first element 21.
  • the one or more first transparent subregions 21 1 of the first element 21 and the one or more transparent subregions of the third element are preferably designed to be congruent with one another, when viewed perpendicular to the plane spanned by the first main surface 201.
  • the at least one reflective second sub-area 212 of the first element 21 is preferably formed congruently with the at least one reflective second sub-area of the third element.
  • the colored lacquer layer of the second element 22 is preferably provided between the two opaque and superimposed reflection layers of the first element 21 and the third element. As a result, those with the second partial areas 221 of the first element 22 and / or the second
  • Parts of the third element overlapping areas of the colored lacquer layer are not visible in incident light from the front or from the rear, or in transmitted light.
  • the color filter function is only visible in the first areas 211.
  • one or more colored layers may be provided in the one or more second partial areas 212, which influence the color impression of the feature 33 or 34 visible from the front and / or rear when viewed from the front. If, for example, a translucent colored lacquer layer is provided on the rear side of a metal layer in the at least one second partial area 212, the feature 34 shown from the rear side in reflected light observation can be additionally colored accordingly and a correspondingly different color impression of the features 33 and 34 can be achieved.
  • Sub-areas 212 is provided.
  • the color impressions of features 33 and 34 that can be recognized in incident light observation should be as different as possible from the color impressions of feature 31 that can be recognized in transmitted light observation.
  • the difference in color impressions should be chosen so that color-blind people, especially red / green, should also be selected
  • the color impressions in incident light and transmitted light should differ as clearly as possible in terms of brightness and / or chroma.
  • the one or more layers of the first element 21 are preferably designed in such a way that the one or more second partial areas 212, when viewed in reflected light from the front and / or rear side, have an optical density of greater than 0.8 OD, preferably of more than 1 , 1 OD, more preferably an optical density greater than 1.3 OD and particularly preferably more than 1.5 OD averaged over the visible wavelength range and / or a reflectivity in the visible wavelength range, based on a pure mirror surface, of more than 40% averaged over the visible wavelength range further preferably have more than 70%.
  • the second element 22 has one or more first partial areas 221, which in transmission each form a color filter matched to a respective assigned color.
  • the second element also has at least one second partial area 222.
  • the second element 22 is colorless, preferably colorlessly transparent. This is achieved, for example, in that the one or more first
  • Subregions 221 provided one or more layers, which in
  • Subregions 222 are not provided or are removed again. Furthermore, it is also possible for a color filter to be formed in transmission and / or reflection in the at least one second sub-area 222 which is matched to a color that is not assigned to any of the one or more first sub-areas 221 of the second element 22.
  • the second element 22 preferably has one or more translucent colored layers and / or photochromic layers, which are structured accordingly to form the one or more first partial areas 221 and second partial areas 222.
  • the main surface of the x / y plane spanned at least partially so that the in Color impression resulting from the transmitted light observation can be adjusted by means of the second element 22, preferably without thereby impairing the color impression which is shown in incident light observation from the front and / or rear side.
  • first subareas 211 of the first element 21 and first subareas 221 of the second element 22, when viewed perpendicular to the plane spanned by the first main surface 201, are arranged in register with one another in such a way that in the respective area 41 in transmitted light a first colored feature 31 becomes visible, which is not visible, in particular when viewed from the front or back, when viewed from above:
  • first feature 31 a colored lettering “KINEGRAM”, in a first area 41, for example in red color, and as the first feature 31 in a further first area 41 a schematic sun of the same color.
  • KINEGRAM colored lettering “KINEGRAM”
  • first area 41 for example in red color
  • first feature 31 in a further first area 41 a schematic sun of the same color.
  • first partial areas 211 are only provided in the first areas 41 and the entire remaining area of the
  • See-through security element 2 is covered over the entire area with a second partial area 212.
  • the see-through security element 2 thus appears metallic silver when viewed from the front as well as from the rear, as can also be seen in FIGS. 1 a and 1 b, the motifs (sailing boat, water, denomination, currency code) as explained above, can be generated by corresponding optically variable relief structures.
  • the colored features 31 shown in FIG. 1c appear to the viewer in the form of the motifs set out above in front of a full-area dark background.
  • the first subareas 211 and the first subareas 221 are positioned in such a way that, when viewed perpendicular to the plane spanned by the first main surface 201, the first subareas 221 are congruent with overlap a respectively assigned first sub-area 211.
  • the first partial areas 211 and 221 in the first areas 41 preferably have a dimension of less than 500 ⁇ m, preferably less than 300 ⁇ m, in particular less than 150 ⁇ m, in at least one lateral direction and are preferably designed as thin lines or grid elements . This also ensures that the optical effect of the first subregions 211 and 221 is essentially only recognizable when viewed through transmitted light and thus the reflected / transmitted light effect illustrated with reference to FIGS. 1 a to 1 c is brought about.
  • the see-through security element 2 outside the one or more first areas 31 is not formed over the entire area by a second partial area 212, but also has first partial areas 211 there.
  • FIG. 2 shows the security element 2.
  • first partial areas 211 are also provided, which are shown in FIG Viewing transmitted light, in particular, make colorless, recognizable motifs, here, for example, water lines and the stylized outline of a sailing boat visible as a further feature 35.
  • This see-through security element 2 thus has, for example, a partial metallization designed for viewing in reflection, which in this example is in the form of a sailing boat and water waves.
  • security features 31 are provided, which only in
  • Subareas 212 relief structures, in particular diffractive and / or refractive microstructures, are provided and so, for example, a Fresnel-like microstructure is provided in the second subarea 212, which forms the hull of the sailboat, which gives the illusion of an out of the plane of the
  • See-through security element 2 generated protruding trunk.
  • non-achromatic diffractive or reflective microstructures can be provided which imitate a flutter of the sails.
  • the see-through security element 2 when viewed through incident light, the reflection from the front and / or rear side appears in a different color than when viewed through transmitted light. If, for example, the color red is selected as the color for the features 31, the motifs of the appear
  • Features 33 preferably shiny silver or a color other than red.
  • the features 31 have several different colors and / or have colorless partial areas in addition to “colored partial areas”.
  • Such a design of the see-through security element 2 is shown in FIG. 3 indicated which, when viewed in transmitted light, generates the lettering “KINEGRAM” in red as the first feature 31, and as the first feature 31 generates a stylized sun in “blue color” (indicated here by dotted lines).
  • color filters are formed in the one or more first partial areas 221 of the second element 22, which are assigned to the different colors and these are assigned accordingly
  • Elements 21 are provided which do not overlap with assigned first partial areas 221 of the second element 22, but rather overlap with the at least one second partial area 222 of the second element 22.
  • the one or more first partial areas 211 of the first element 21 each have at least 80% of the area, preferably more than 90% of the area and in particular completely of the at least one second partial area 212 of the first element 21 are enclosed and / or that in the first areas 41 the one or more first sub-areas 221 of the second element 22 each at least 80% of the area, preferably more than 90% of the area and in particular completely by the at least one second sub-area 222 of the second Elements 22 are enclosed. Investigations have shown that such a design of the first and second partial areas 211, 212, 221, 222 further improves the concealment of the first features 31 in incident light observation. As already stated above, the one or more first partial areas 211,
  • 221 further preferably in the form of lines and / or raster points which have a width or diameter of less than 500 ⁇ m, preferably less than 300 ⁇ m, particularly preferably less than 150 ⁇ m.
  • the aim is preferably to achieve the highest possible reflectivity in incident light observation in the subregions 212, if possible a reflectivity of more than 30%, more preferably more than 50%, more preferably more than 70%.
  • reflectivity is to be understood here as the ratio of the light that is irradiated in the visible wavelength range to that of the back-reflected, back-diffracted or back-scattered light, i.e. the "total amount” of the light "returning" in the visible wavelength range towards the viewer when viewed from above .
  • the at least one second partial area 212 in particular the first areas 41, with optically active relief structures, in particular with diffractive, rainbow-generating, relief structures and / or diffractive, light-diffractive or reflective structures
  • achromatic relief structures that generate achromatic movement effects.
  • These movement effects can be arranged with further, optically variable, effects in the form of a grid or otherwise combined.
  • This means that at least one second partial area 212 is subdivided into a multiplicity of zones, in each of which a relief structure assigned to one of the effects is molded into a reflective layer, which is provided in the at least one second partial area 212.
  • one or more of the first partial areas 21 1 and the one or more first partial areas 221 each preferably have a dimension between 5 ⁇ m and 300 ⁇ m in at least one lateral direction between 10gm and 200gm, more preferably between 15gm and 150gm.
  • the one or more first partial areas 21 1 and 221, as also indicated in FIG. 8, are preferably designed in the form of a fine, continuous line.
  • the width AL of at least 70%, more preferably at least 90% of the first partial areas 211 or 221 in the area 41 is preferably smaller than 300 ⁇ m.
  • the line width AL in the first area 41 is preferably between 5 ⁇ m and 300 ⁇ m, more preferably between 10 ⁇ m and 200 ⁇ m, more preferably between 15 ⁇ m and 150 ⁇ m.
  • these lines can also be sub-structured, for example in the form of lines or dots, which are then grouped into corresponding lines “, Which ultimately form visible first features 31 when viewed through transmitted light.
  • the first partial areas 211 are also advantageous or 221 in the form of grid points which are arranged in the respective first area 41 according to a one- or two-dimensional grid.
  • the individual grid points can be shaped as desired, for example circular disk-shaped, square, rectangular in plan view, but also have a complex structure such as an alphanumeric character.
  • the grid points here preferably have dimensions of widths between 5 pm and 300 pm, preferably between 10 pm and 200 pm, more preferably between 15 pm and 150 pm, in one, more preferably in both lateral directions.
  • the diameter of this circular disk when viewed perpendicular to the plane spanned by the first surface 201 is between 5 pm and 300 pm, preferably between 10 pm and 200 pm, more preferably between 15 pm and 150 pm.
  • Such a configuration can provide a “flat” colored first feature 31 when viewed through transmitted light.
  • the individual “grid points” are arranged in relation to the grid in such a way that the human viewer perceives an “integral” effect as far as possible, and a perceptible “surface shape” appears to the viewer, which is preferably limited by the outline of the area in which the grid points are provided according to the grid, and the brightness of which is determined by the respective local spacing and size of the grid points.
  • the spacing between the grid points of the grid and / or the period of the grid is preferably in the range between 5 pm and 300 pm, preferably between 10 pm and 200 pm, more preferably between 15 pm and 150 pm. It is also advantageous if the at least one second sub-area 212 of the first element 21 completely encloses the one or more first sub-areas 211 of the first area 41, and further also completely encloses the respective first area 41 of the see-through security element 2, when viewed perpendicular to the plane spanned by the first main surface 201.
  • first partial areas 211 provided in the first area 41 are surrounded in all lateral directions at least at a distance d from the at least one second partial area 212. This is illustrated, for example, in FIG. 9: The second sub-area 212 there extends from the respective first sub-areas 211 by at least the distance d.
  • the distance d is preferably selected here to be greater than 0.5 mm, more preferably greater than 0.8 mm, and more preferably greater than 1 mm.
  • the at least one second partial area 212 starting from the first area 41, extends at least by the distance d, when viewed perpendicular to that of the first main surface
  • the second sub-area 212 completely encloses this "rectangle" in a strip which has a width d.
  • the outline contours of the first feature 31 are defined by the lateral arrangement of the first partial areas 211. This applies correspondingly if the first partial areas 211 are designed in the form of raster points.
  • this definition of the first area 41 results in the form of the area 41 shown in the lower representation of FIG Rectangle with a length b and a width a.
  • the rectangle can also be “rotated” here if a smaller area can be achieved with it.
  • the corresponding smallest rectangle that is arranged below is obliquely attached to the
  • the definition of the area 41 is based on the text adapted rectangle as the smallest rectangle.
  • the recognizability of the first feature 31 is further improved, and furthermore the “concealment” of the first feature 31 in incident light observation is further improved.
  • See-through security element 2 increases the optical contrast in transmitted light and thus simplifies the reliable examination of the properties by the viewer.
  • the area proportion F of the first partial areas 211 provided in the first area 41 to the total area of the area 41 is less than 20%, more preferably less than 10%, more preferably less than 5%.
  • the first area on which this calculation is based is preferably defined as explained above with reference to FIG. 10, ie defined by the smallest possible rectangle enclosing the first partial areas 211, which form the first feature 31.
  • the area portion F is thus determined from the total sum of the first partial areas 211 in the area 41 to the total sum of the first partial areas 211 and the second partial areas 212 in the area 41.
  • the see-through security element has a first element 21 which has one or more transparent first partial areas 21 1 and at least one reflective second partial area 212, and a second element 22 which has one or more first partial areas 221 which each in transmission form a color filter matched to a respectively assigned color, and have at least one second partial area 222 which is colorless, in particular colorless
  • the colored first partial areas 221 of the second element 22 can be seen in one or more colors when viewed through transmitted light. 16 shows this using a flower motif by way of example.
  • the grid for generating the grayscale image is shown in the enlarged section.
  • the reflective second partial areas 212 are represented here by dark areas that
  • transparent first partial areas 211 are represented by light areas.
  • the color layer 221 structured by means of the negative photoresist in register with the reflective second partial areas 212 is present in the transparent first partial areas 211.
  • two or more differently colored photoresists can also be used, overlapping the subregions 211, e.g. a yellow colored photoresist in the area of the whole flower and in the round center
  • the flower of the flower on the yellow-colored photoresist additionally a red-colored photoresist (see FIGS. 18a and 18b). Since the two colored photoresists are translucent, i.e. transparent or semi-transparent, photoresists, a mixed color of yellow and red arises when viewed through transmitted light in the partial areas 211 in the round center (pistil) of the flower. When viewed through transmitted light, the petals of the flower appear yellow in the partial areas 211. As a result, the flower appears two-colored in the subregions 211 when viewed through transmitted light. Alternatively, the two or more photoresists can also be applied in such a way that they do not overlap or only overlap in partial areas. Different colored photoresists are arranged in different partial areas 211. A reflective, opaque frame made up of the partial areas 212 around the flower can be used in order to compensate for any printing tolerances during the partial application of the negative photoresist.
  • the transparent first partial areas 211 So that the color in the transparent first partial areas 211 is not or as little as possible visible in reflected light observation, the transparent first partial areas
  • Subareas 211 preferably in at least 50% of the area of the grayscale image less than 30% area proportion of first element 21, more preferably less than 20% area proportion of first element 21 and particularly preferably less than 10% of the area of the first element 21.
  • the transparent first partial areas 211 further preferably comprise at least 70% of the area of the
  • Grayscale image less than 30% area proportion of the first element 21, more preferably less than 20% area proportion of the first element 21 and particularly preferably less than 10% area proportion of the first element 21.
  • brilliant, optically variable effects are located in the area of the gray level image of the first element 21 in the partial areas 212
  • Diffractive grating structures with a number of lines from 500 lines / mm to 2000 lines / mm and more preferably 600 lines / mm to 1500 lines / mm and / or refractive micromirrors and / or refractive structures with predominantly achromatic optical effects can be used here Use come. Such brilliant effects hide the color in the subregions 211, which is present in the register with the metallization in the subregions 212, particularly well.
  • first partial areas 221 of the second element 22 are also provided outside of the first areas 41. This is shown as an example in Fig. 4a and Fig. 4b:
  • FIG. 4a shows a see-through security element 2 of this type in incident light viewing from the front side and FIG. 4b in transmitted light viewing.
  • feature 31 already explained above are visible in transmitted light observation and features 33 and 34 already explained above are visible in reflected light observation.
  • colored features 32 are also visible when viewed through transmitted light, each of which is in the form of a part of a “cloud”. These features 32 are formed here by correspondingly shaped first partial areas 221 of the second element 22, which are arranged correspondingly overlapping within a large-area first partial area 211 of the first element 21. These first colored features 32 are preferably also visible in reflected light viewing, as indicated in FIG. 4a.
  • the first partial areas 221, which form the features 32 are preferably arranged in register with a first partial area 211 of the first element in such a way that the colored features 32 are located directly on an in
  • the security element 2 thus preferably has one or more second areas 42, in which, as illustrated in FIG. 1 d, at least one of the first sub-areas 221 of the second element directly adjoins a second sub-area 212 when viewed perpendicular to that of the first main surface 201 spanned plane.
  • the partial area 221 designed in the form of a “cloud” overlap with a first partial area 211 of the first element, which is designed, for example, in the “negative shape” of the sailboat, in such a way that this partial area 221 directly adjoins a first partial area 21 1 adjoining second sub-area 212.
  • the second partial area 212 which is designed in the form of a “sail”.
  • overlapping first and second partial regions 21 1 and 221 here have a different shape or form different motifs, in particular complementary motifs.
  • first sub-area 221 is provided within a first sub-area 211, but also two or more such sub-areas, which in particular each form color filters that are matched to different colors.
  • FIG. 5c shows a view of a see-through security element 2 when viewed from the front and FIG. 5d shows a through-light view of this see-through security element 2.
  • the feature 32 is here by a first partial area 221, which is shown in FIG Is formed in the form of a cloud and appears in the color “blue” when viewed through transmitted light, and a first partial area 221 is formed, which is arranged in register for this purpose and which is formed in the form of half a “sun”, which appears in the transmitted light as the color “yellow”.
  • FIGS. 4a to 5b illustrate a see-through security element 2 in which the first partial areas 221, which form the features 32, are shaped in the form of lines and which, as already explained with regard to FIGS. 4a to 5b, adjoin a second area 212 in register. These lines are shaped here in the form of a stylized cloud.
  • FIG. 6b Reflected light viewing from the front, and FIG. 6b with transmitted light viewing.
  • the features 32 appear here in transmitted light viewing in blue color.
  • the first partial areas 221 not only seamlessly adjoin the second partial area 212, but, as shown in FIG. 7a, a column of width s is provided between the first partial area 221 and the second partial area 212.
  • the width of the gap s is preferably less than 500 ⁇ m, preferably less than 300 ⁇ m, more preferably less than 150 ⁇ m and in particular less than 50 ⁇ m. So that
  • the register accuracy of the two elements can still be assessed very well for the human observer and accordingly a forgery can be easily checked. Furthermore, it is also possible that the first sub-area 221 and the second
  • Sub-area 212 each have an overlap t of not more than 100 pm
  • Fig. 7b preferably not more than 50 ⁇ m, more preferably not more than 10 ⁇ m. This is illustrated in Fig. 7b.
  • a security document preferably the security document 1 according to FIG. 1, has two or more see-through security elements.
  • a first see-through security element here preferably has a first element 21 and a second element 22.
  • See-through security element here preferably has a first element 21 and a second element 22.
  • the second see-through security element can only have a first element 21.
  • the first see-through security element can only have a first element 21.
  • See-through security element a first element 21 and a second element 22 and the second see-through security element has a first element 21 and a second element 22.
  • the first see-through security element has a first element 21, which has one or more transparent first partial areas 21 1 and one or more reflective second partial areas 212, the first
  • See-through security element has a second element 22 which has one or more first partial areas 221, which in transmission each form a color filter matched to a respective assigned color, and one or more second partial areas 222 which are colorless, in particular colorlessly transparent, or in Transmission and / or reflection form a color filter that is matched to a color that is not assigned to any of the one or more first subregions 221 of the second element 22, the first subregions 21 1 of the first element 21 and the first subregions 221 of the second Elements 22 at least partially overlap when viewed perpendicular to the plane spanned by the first surface area.
  • the second see-through security element has a first element 21, which has one or more transparent first partial areas 211 and one or more reflective second partial areas 212, the second
  • See-through security element has a second element 22 which has one or more first partial areas 221, which in transmission each form a color filter matched to a respective assigned color, and one or more second partial areas 222 which are colorless, in particular colorlessly transparent, or in Transmission and / or reflection form a color filter which is matched to a color which does not match any of the one or more first partial areas 221 of the second element 22 is assigned, the first partial areas 21 1 of the first element 21 and the first partial areas 221 of the second element 22 at least partially overlap when viewed perpendicular to the plane spanned by the first main surface.
  • FIG. 17a shows in a schematic sectional illustration the first and the second see-through security element 2a, 2b, which are arranged in a transparent area, in particular a transparent window area, on opposite sides of a substrate 10 of a security document, in particular a bank note made of a polymer substrate, and are spaced from one another at a distance h are.
  • the first see-through security element 2a functions here as a luminous layer and the second see-through security element 2b as
  • the first see-through security element 2b is preferred
  • See-through security element only the first element 21 is arranged.
  • the first element 21 of the first see-through security element 2a thus has first partial areas 21 1 and second partial areas 212, which are arranged in the form of moiré information.
  • the second element 22 of the first see-through security element 2a that is to say a structured colored layer, is arranged in the register.
  • the first element of the second see-through security element 2b thus also has first partial areas 21 1 and second partial areas 212, the first
  • Subareas 21 1 generate transparent openings and the second subareas 212 generate opaque (reflective) areas.
  • the first sub-areas 221 are in the register and second partial areas 222 of the second element, that is to say a structured one
  • the structured color layer is preferably only in one
  • See-through security element arranged, preferably in the second
  • See-through security element 2b mask layer
  • the second see-through security element 2b is shown viewed from the visible side in transmitted light. The light meets the first
  • See-through security element 2a i.e. the luminous layer - e.g. a protective layer of a security element - and guides the light on to the second elements 22, for example in the form of a structured color layer and to the first elements 21 in the form of moiré information.
  • the light penetrates the substrate 10 and the second see-through security element 2b (mask layer) through the transparent openings and thereby produces the desired effect, e.g. Moiré enlargements and / or movement effects.
  • 17b shows the second in a schematic plan view
  • See-through security element 2a (luminous layer) and the visible image information 36.
  • the second see-through security element 2b (mask layer) is designed as a line grid in the present example, with the first elements in the form of a line grid and the second elements in the form of a structured color layer.
  • the first see-through security element 2a (luminous layer) has in the
  • the moiré information in the first see-through security element can be any one of the first see-through security element.
  • Micro images are arranged according to a periodic grid, which are made visible as large images for the human observer by the so-called moiré magnification effect. If the banknote is now in
  • the visible large images appear to be moving.
  • One of the two see-through security elements 2a, 2b or both preferably has the (colored) first partial areas 221 of the second element 22 in register with the (reflective) second partial areas 212 of the first element 21, as shown schematically in FIG. 17c.
  • the movement effect appears in transmitted light in one or more colors.
  • FIGS. 1 1 a to 15 i are now illustrated below with reference to FIGS. 1 1 a to 15 i:
  • a substrate which comprises the carrier layer 23 and the one or more lacquer layers 24 optionally applied thereon.
  • this substrate which preferably has a replication layer as lacquer layer 24, into which microstructures by means of thermal
  • an opaque metal layer 60 is first deposited over the entire surface.
  • Fig. 1 1 a shows such a substrate.
  • the metal layer 60 can consist of aluminum, silver, chromium or copper, for example. This can be implemented, for example, by means of thermal evaporation in a vacuum.
  • the layer 60 is partially removed. This can take place, for example, by means of printing an etching resist and subsequent etching, or by means of a washing process. If a washing process is used, before the layer 60 is applied, a washing lacquer is printed on in corresponding areas, which then after the layer 60 has been applied in a washing process together with the overlying ones
  • Areas of the layer 60 is dissolved or removed.
  • first element 21 After the first element 21 has been produced by carrying out such processes, it becomes, as illustrated in FIG. 1 1 c, over the entire area
  • Photoresist layer 70 applied from a negative photoresist.
  • the first element 21 consists of the one or more first partial areas 211 and the one or more second ones
  • Subregions 212 As illustrated in the exemplary embodiment illustrated in FIG. 11 c, the one or more layers of the first element 21 are provided in the subregions 212, but not provided in the subregions 21 1.
  • the first element 21 consists of the metal layer 60, which is provided in the subregions 212 after the structuring process has been carried out, but is not provided in the subregions 211.
  • the photoresist is preferably a negative photoresist, which is colored accordingly, in transmission
  • a negative photoresist is characterized by the fact that, given sufficient exposure to a suitable wavelength, e.g. B. by means of UV radiation, cures, and thereby insoluble in the exposed areas in a certain solvent, z. B. acidic or basic aqueous solutions. With a masked exposure, colored areas of a defined shape and size can be achieved.
  • a suitable wavelength e.g. B. by means of UV radiation
  • the main constituents of a negative photoresist based on epoxy resins are generally low molecular weight organic compounds that have more than one epoxy group per molecule.
  • Resorcinol glycidyl ether and resins with a cycloaliphatic structure are preferably used as resin components for the production of photoresist.
  • catalysts such as e.g. Lewis bases and acids used.
  • the hardener is built into the three-dimensional network structure.
  • the catalyst favors the
  • the solvent used in the printing ink of such epoxy resin-based photoresists is preferably g-butyrolactone.
  • additives such as. B. long-chain epoxy resins are used to serve as an adhesion promoter, reactive thinner or as an additive or reduction in viscosity.
  • the photoresist SU-8 epoxy novolac based on bisphenol A is used as the negative photoresist; Triarylsulfonoime hexafluoroantimonate; g-butyrolactone
  • This photoresist is colored with Orasol dye or Microlith color pigments.
  • Water-based negative photoresists can be colored with Luconyl, for example.
  • the photoresist layer 70 is applied over the full area to the first element 21 by means of gravure printing, as illustrated in FIG. 11 c.
  • Photoresist layer 70 one or more further layers are provided. However, the total thickness of such layers is preferably not more than 15 ⁇ m, more preferably not more than 5 ⁇ m.
  • These intermediate layers can, for example, be additional lacquer layers to protect the metal layer 60 in particular in further process steps, an adhesion-promoting layer for improved bonding of the photoresist,
  • Replication layers a full-area or partial HRI layer, an SiOx layer or a further photo-structurable layer, but none
  • the photoresist layer 70 is exposed to a suitable wavelength through the first element 21, for example by means of UV radiation 80. This is used
  • the partial metal layer 60 as a mask for the exposure.
  • the photoresist is a negative photoresist, only the exposed parts of the photoresist layer 70 remain in a washing process carried out after exposure, as shown in FIG. 11 e. The so
  • See-through security element 2 are formed. Subsequently, an adhesive and / or bonding layer and / or protective layer is optionally applied. In Fig. 11f it is shown here that in a further step the adhesive layer 25 is applied over the entire area, for example by means of gravure printing.
  • first partial areas 221 which only partially overlap with a first partial area 21 1.
  • the imprint is preferably carried out in such a way that the layer boundaries of the partial photoresist layer 70 and / or the differently colored ones
  • Photoresist layers 70 lie in the second partial regions 212. This has the advantage that the insufficient registration of the
  • first partial areas 21 1 formed first partial areas 221 in which transmissive color filters are matched to different colors.
  • FIGS. 13a to 13h Another manufacturing method is now illustrated with reference to FIGS. 13a to 13h: In this method, the procedure is initially as already described with reference to FIGS. 12a to 12c. This is illustrated in FIGS. 13a to 13c.
  • a negatively colored photoresist is applied here in such a way that it not only covers one or more first partial areas 211, but also a second partial area 212 enclosing it.
  • Photoresist layer 70 is applied here for example by means of gravure printing. This application makes it possible to reduce the considerable tolerances of a
  • Gravure printing process which are in the range of +/- 0.1 mm across the direction of the printing process, to intercept.
  • a blocker layer 75 is partially printed on, for example by means of gravure printing.
  • the blocker layer 75 is a layer which is colored and at the same time blocks the exposure of the photoresist to the radiation used.
  • the blocker layer 75 is preferably a UV blocker layer.
  • the blocker layer 75 blocks the incident UV radiation at least in a partial area of the UV length range which is used for the exposure in such a way that a maximum of 25%, more preferably a maximum of 15% of the incident intensity passes through the blocker layer 75.
  • the UV wavelength range is preferably understood to mean a range between 250 nm and 405 nm.
  • the blocker layer 75 is preferably colored, as already stated above, preferably in a different color than the negative photoresist 70 Blocker layer 75 is preferably colored in such a way that it is in
  • Transmission forms a color filter which is matched to a color which differs from that of the colored photoresist layer 70.
  • Carrier layer 23, or the one or more lacquer layers 24, is introduced.
  • one or more further photoresist layers 70 can be printed, which are preferably designed differently from the already printed photoresist layer 70, as already explained above.
  • the partial photoresist layer 70 can be printed, which are preferably designed differently from the already printed photoresist layer 70, as already explained above.
  • a corresponding exposure then takes place, as shown in FIG. 13f.
  • the unexposed areas of the photoresist layer 70 are then washed off, as a result of which the perfect register between the differently colored areas and the first partial areas 21 1 is achieved.
  • Stabilization layers are introduced.
  • negative photoresist layers that have not been colored can be used as structurable barrier layers. These then prevent, for example, an unwanted one
  • This barrier layer can, for. B. also solving the
  • one or more additional layers for example the adhesive layer 25, can be applied.
  • the blocker layer 75 can be partially applied by means of digital printing, for example by means of inkjet printing. This allows individual identifications of individual
  • a colored photoresist layer 70 can also be applied over the entire area and the exposure can only be carried out partially. This exposure can take place, for example, via a mask and / or by means of controllable UV light-emitting diodes.
  • a photochromic layer 71 is applied over the entire area instead of a photoresist.
  • a photochromic layer is understood here to mean a layer which permanently changes its colors by exposure to radiation with a suitable wavelength or which permanently maintains its colors by exposure to radiation of a suitable wavelength.
  • the suitable wavelength is particularly UV radiation.
  • this layer can also be printed on only in certain areas - in the same way as described above with reference to FIGS. 12 and 13
  • different photochromic layers 71 are printed next to one another, which change their colors in different ways when irradiated or receive correspondingly different colors when irradiated.
  • the exposed portion of the photochromic layer is not washed off (as described in the previously described methods with respect to the photoresist layer 70). Rather, the exposed one remains
  • the photochromic layer 71 completely in the layer stack.
  • the photochromic layer 71 changes here due to the irradiation with the UV radiation 80 from transparent in the visible wavelength range to in the visible wavelength range
  • the photochromic layer 71 in transmission in these areas forms a color filter which is matched to a predefined color.
  • the photochromic layer 71 is already colored and only changes the color in the irradiated areas.
  • the photochromic layer 71 is preferably formulated in such a way that a corresponding color filter in transmission is formed in the exposed areas, as shown above, and a different color filter in reflection and / or transmission is formed in the non-exposed areas.
  • a second element 22 is formed by the photochromic layer 21, which forms a color filter in transmission in first subregions 221 that is matched to an assigned color, and is colorless / transparent in second subregions 222 or a color filter in reflection and / or form transmission that is matched to a color that is different from the color to which the color filters of the first partial areas 221 are matched.
  • one or more further layers for example the adhesive layer 25, are optionally applied.
  • the see-through security element may additionally have a third element which is provided below the second element.
  • a preferred setting method for setting such a see-through security element is described below with reference to FIGS. 15a to 15i:
  • FIGS. 15a and 15b in the same way as above with reference to FIGS. 1 1 a and 1 1 b,
  • the photoresist 70 is preferably only printed on in certain areas, in particular by means of gravure printing.
  • a colored lacquer can also be printed on a photoresist.
  • the photoresist 70 here overlaps at least a first partial area of the first element, at least in areas. Furthermore, it is also possible for the photoresist 70 to overlap the second partial area of the first element 21 at least in areas.
  • an optional intermediate layer 26 and one or more layers 27 are applied.
  • the optional intermediate layer 26 preferably consists of a transparent lacquer layer, in particular a transparent layer with a layer thickness of preferably less than 5 ⁇ m.
  • the optional intermediate layer 26 is preferably a replication layer in which
  • Microstructures can be molded by means of thermal replication and / or UV replication.
  • the one or more layers 27 are then applied to the intermediate layer 26, by means of which the third element is then produced in the following processing steps.
  • the layer 27 is preferably an opaque metal layer, which is designed like the metal layer 60 according to FIG. In this regard, reference is made to the preceding statements.
  • the metal layer 60 and the layer 27 consist of different metals, preferably consist of different metals with different intrinsic colors, such as aluminum on the one hand and copper on the other.
  • the photoresist layer 28 here can be designed like the photoresist layer 70 according to FIG. 11 c, so that reference is made to the preceding statements in this regard.
  • the partial metal layer of the first element 21 serves as a mask for the exposure.
  • the layer 27 is removed in the exposed area by means of etching or by means of a washing process and
  • the remaining areas of the photoresist layer 28 are stripped.
  • the illuminated photoresist layer 28 is used as an etching mask or washing mask in the etching and / or washing process.
  • an adhesive and / or flaft mediating layer and / or a protective layer is then applied.
  • an adhesive and / or flaft mediating layer and / or a protective layer is then applied.
  • the adhesive layer 25 is applied over the entire area, for example by means of gravure printing.
  • Intermediate layer 26 has a microstructure, in particular by means of thermal
  • the same microstructures, but also different microstructures can be molded into the lacquer layer 24 and the intermediate layer 26, for example when viewed from the front and rear

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Abstract

La présente invention concerne un élément de sécurité de vérification (2), un document de sécurité (1) ainsi qu'un procédé de fabrication d'un élément de sécurité de vérification (2). L'élément de sécurité de vérification comprend un premier élément ayant une ou plusieurs premières sous-zones transparentes et au moins une seconde sous-zone réfléchissante. L'élément de sécurité de vérification comprend un second élément ayant une ou plusieurs premières sous-zones, qui forment chacune en transmission un filtre chromatique accordé sur une couleur associée respective, et au moins une seconde sous-zone qui est formée incolore, en particulier transparente incolore ou forme en transmission et/ou en réflexion un filtre chromatique qui est accordé sur une couleur qui est associée à aucune de la ou des premières sous-zones du second élément. Les premières sous-zones du premier élément et les premières sous-zones du second élément se recouvrent au moins en partie.
EP20732156.3A 2019-06-06 2020-06-04 Élément de sécurité de vérification Pending EP3980275A1 (fr)

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DE102019115391.3A DE102019115391A1 (de) 2019-06-06 2019-06-06 Durchsichtsicherheitselement
PCT/EP2020/065543 WO2020245308A1 (fr) 2019-06-06 2020-06-04 Élément de sécurité de vérification

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DE102021109967A1 (de) * 2021-04-20 2022-10-20 Leonhard Kurz Stiftung & Co. Kg Verfahren zum Herstellen eines Mehrschichtkörpers, Mehrschichtkörper, Verwendung eines Mehrschichtkörpers, Verwendung einer ersten Schicht aus einem ersten Metall und einer zweiten Schicht aus einem zweiten Metall in einem Mehrschichtkörper sowie Verwendung einer Wärmebeaufschlagungsvorrichtung
CN113147216B (zh) * 2021-05-24 2022-09-13 中钞印制技术研究院有限公司 光学防伪元件及其检测、制造方法和装置、安全物品

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DE102004039355A1 (de) 2004-08-12 2006-02-23 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
JP5343373B2 (ja) 2008-03-06 2013-11-13 凸版印刷株式会社 セキュリティデバイス及びラベル付き物品
DE102008013073B4 (de) * 2008-03-06 2011-02-03 Leonhard Kurz Stiftung & Co. Kg Verfahren zur Herstellung eines Folienelements und Folienelement
DE102008013167A1 (de) 2008-03-07 2009-09-10 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102009033762A1 (de) * 2009-07-17 2011-01-27 Leonhard Kurz Stiftung & Co. Kg Verfahren zur Herstellung eines Mehrschichtkörpers sowie Mehrschichtkörper
GB2474903B (en) 2009-10-30 2012-02-01 Rue De Int Ltd Improvements in security devices
JP5428100B2 (ja) 2010-08-25 2014-02-26 独立行政法人 国立印刷局 透過潜像模様形成体
DE102010050031A1 (de) 2010-11-02 2012-05-03 Ovd Kinegram Ag Sicherheitselement und Verfahren zur Herstellung eines Sicherheitselements
DE102010054760A1 (de) * 2010-12-16 2012-02-16 Giesecke & Devrient Gmbh Sicherheitselement, Verfahren zum Herstellen desselben und Datenträger
EP2825391A4 (fr) * 2012-03-13 2015-11-18 Graphic Security Systems Corp Dispositif optique à images multiples
GB201301788D0 (en) 2013-02-01 2013-03-20 Rue De Int Ltd Security devices and methods of manufacture thereof
DE102013106827A1 (de) * 2013-06-28 2014-12-31 Leonhard Kurz Stiftung & Co. Kg Verfahren zur Herstellung eines Mehrschichtkörpers sowie Mehrschichtkörper
JP6394962B2 (ja) 2014-12-04 2018-09-26 独立行政法人 国立印刷局 透過潜像印刷物
DE102015106800B4 (de) 2015-04-30 2021-12-30 Leonhard Kurz Stiftung & Co. Kg Verfahren zum Herstellen eines Mehrschichtkörpers
DE102016013242A1 (de) * 2016-11-07 2018-05-09 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit optisch variablem Durchsichtselement
DE102017106545A1 (de) * 2017-03-27 2018-09-27 Ovd Kinegram Ag Verfahren zur Herstellung eines optischen Sicherheitsmerkmals sowie ein Sicherheitselement und ein Sicherheitsdokument

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JP2022535090A (ja) 2022-08-04
US20220324248A1 (en) 2022-10-13
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DE102019115391A1 (de) 2020-12-10
US12109834B2 (en) 2024-10-08

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