EP2323852A1 - Safety element having incident and transmitted light information - Google Patents
Safety element having incident and transmitted light informationInfo
- Publication number
- EP2323852A1 EP2323852A1 EP09777748A EP09777748A EP2323852A1 EP 2323852 A1 EP2323852 A1 EP 2323852A1 EP 09777748 A EP09777748 A EP 09777748A EP 09777748 A EP09777748 A EP 09777748A EP 2323852 A1 EP2323852 A1 EP 2323852A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- security element
- color layer
- viewed
- color
- layer
- 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.)
- Granted
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/378—Special inks
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
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- 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
Definitions
- the invention relates to a security element for a data carrier with a window area, which comprises incident and transmitted light information, a transfer element comprising such a security element for application to a data carrier, a data carrier with such a security element and method for producing such a security element and such data carrier.
- Data carriers such as valuables or identity documents, or other valuables, such as branded articles, are provided with security elements for the purpose of security, which permit verification of the authenticity of the object and at the same time serve as protection against unauthorized reproduction.
- security elements often produce a highly visible visual impression, which is why such security elements are used in addition to their function as securing means sometimes even as decorative elements for such media or for their packaging.
- a security element can be embedded in such data carriers, for example in a banknote or in a chip card, or designed as a self-supporting transfer element, for example as a patch or as a label, which, after its production, is to be secured to a data medium or other object, for example over a window area of the Disk, is applied.
- Data carriers in the context of the present invention are in particular banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers forgery, such as passports or other identification documents, and also card-shaped data carriers, in particular chip cards, as well as product security elements, such as labels, seals , Packaging and the like.
- the term “disk” also includes non-executable precursors of such data carriers, which, for example in the case of security paper, are in quasi-endless form and are processed further at a later time.
- Such data carriers can have window areas. These are translucent areas with high translucency, preferably transparent areas.
- the window areas of a data carrier are formed for example by a recess or in the simplest case by a hole in the substrate of the data carrier.
- a transparent region has a high light transmittance of at least 90%, ideally 100%, of the incident visible light.
- a transparent area does not produce a changed impression with respect to the color and / or intensity of the light passing through the transparent area.
- a translucent area visibly reduces the intensity of the transmitted light to a viewer and typically has a light transmission of 20% to 80%.
- Translucent areas can spectrally uniformly reduce the intensity of the transmitted light, such as a gray filter, or have different light transmittances for different spectral ranges, such as a color filter.
- Translucent areas typically have translucent areas which have spectrally different light transmittances and thus produce a color impression in a viewer.
- the light transmission depends on the layer thickness, so that the light transmission in a given spectral range can be reduced to the desired extent by means of a corresponding layer thickness.
- An opaque area generally has a low light transmission of, for example, less than 20%, preferably less than 10% and ideally of 0%.
- Opaque At least for one observer, the intensity of transmitted light is spectrally uniform, so that possibly existing different light transmittances are no longer perceived for different spectral regions.
- covering color layers produce opaque or translucent areas with a spectrally uniform light transmittance for the viewer.
- a viewing, for example a security element, in reflected light means illumination from one side and, for example, vertical viewing of the security element from the same side.
- a reflection in incident light is therefore present when the front of the security element is illuminated and also viewed.
- viewing in reflected light preferably takes place in front of a white background.
- a viewing in transmitted light is understood as an illumination of a security element from one side and a viewing of the security element from another side, in particular the opposite side.
- a reflection in transmitted light is thus, for example, when the back of the security element illuminated and the front of the security element is considered. The light thus shines through the security element and a viewer perceives the light passing through.
- transmitted light the resulting visual impression of the observer is generated by the light transmission of the different areas of the security element.
- a security element for window areas of a data carrier which consists of a substrate in the form of a plastic carrier film is made, on whose two opposite surfaces in each case a security feature is arranged. Between the security features is a full-surface, opaque intermediate layer, so that when viewing the security element from one side only one in the direction of observation on the front security feature is perceived and the back security element has no effect on the perceived impression.
- the security element comprises a transparent carrier foil, which is printed with opaque white halftone dots.
- the dimensions of the grid points are so small that the individual grid points can not be perceived by a viewer with the naked eye.
- These halftone dots are further printed on a front side of the security element with a brightly colored ink layer, so that there is a front-side motif for the viewer.
- a different color layer different from the first color-colored ink layer, is applied, so that a back motif results for the viewer on the back of the security element.
- the opaque white halftone dots serve as an opaque separating layer between the two, in the simplest case, independent motifs. Furthermore, it is proposed to print the back colored colored ink layer with an offset to the underlying, opaque white halftone dots, so that the back motif can be reversed recognized when looking at the front in incident light. Furthermore, it is proposed to partially replace the opaque white halftone dots by a continuous opaque white area, which can be recognized by a viewer when viewed in transmitted light. As another option, such a transmitted light motif To produce, it is proposed to partially remove the opaque white halftone dots and the optionally applied thereon further color layer by laser, so that there is a completely transparent area in the form of a motif. Thus, when viewing the front side in open-light, when looking at the rear side in incident light and when viewing the security element in transmitted light, different motifs result.
- the reflective layer with small, invisible to the naked eye recesses, which provide when viewed in transmitted light for a certain translucence of the otherwise completely opaque, reflective layer.
- Layer are independent of the recesses in the partially reflecting layer, thus different motifs for viewing in incident and transmitted light can be generated. Furthermore, it is known, for example, to apply to the front and back of a translucent substrate such offset grid points that when viewed vertically, a full-surface overall impression results, whereas oblique viewing between the grid points can be seen, so that a partially transparent Impression for the viewer results.
- the known security elements which generate different motifs when viewed in reflected and transmitted light, all have a complex, multi-layered structure and accordingly require complex production processes.
- a high local accuracy of the front and back screen dots is required to each other to obtain the desired impression in vertical and oblique viewing.
- a high accuracy of fit of at least three color layers to each other is required.
- Such a high accuracy of fit can be difficult to ensure especially when the brightly colored color dots are printed wet on wet on the dots of opaque white.
- the double printing results in a high overall thickness of the applied color layers, as a result of which they rub off or also become dirty. If the printing is done in the offset process, it is difficult to ensure the necessary color separation between the printing plate on the blanket and the blanket on the substrate.
- Object of the present invention is therefore to provide a security element, which in the transmitted and transmitted light to the viewer different information and which has a simple structure and thus allows easy production. It is a further object of the invention to specify a corresponding transfer element and a corresponding data carrier.
- the security element according to the invention comprises a translucent, preferably transparent substrate, for example in the form of a plastic film element serving as a carrier film.
- the substrate has a first and a second partial area, the two partial areas, when viewed in reflected light, producing a similar visual impression, in particular color impression, similar to a viewer, but producing different impressions when viewed in transmitted light.
- the first subarea when viewed in transmitted light, compared to the second subarea, the first subarea produces a brighter visual impression for the viewer. Accordingly, compared to the first portion, the second portion provides the observer with a darker visual impression.
- the two subregions are at least partially arranged next to each other in a precisely fitting manner and thus border on each other directly when viewed in reflected light, so that at least in regions there are no unprinted areas or recesses between the subregions.
- the two subareas thus form a coherent overall area. They preferably do not overlap. Due to the essentially identical visual impression produced when viewed in incident light, the observer is only slightly differentiated from the first and the second subarea when viewed in reflected light, ideally not distinguishable, in particular in ideal light conditions. The observer is thus given a first information in reflected light, which is composed of the entirety of the two subregions. When viewed in transmitted light, however, both sub-areas are clearly distinguishable to the viewer because of the different visual impressions produced. The viewer is thus mediated when viewed in transmitted light, a second information, which results from the different appearing first and second sections. Thus, a security feature is created, which can convey different information to a viewer when viewed in reflected and transmitted light.
- Such partial areas can be realized according to a first embodiment, in that the first and second color layers in the first and second partial areas are each applied with different degrees of coverage.
- the second color layer is applied over the entire area in the second partial area, while the first color layer is applied in a grid-like manner in the first partial area.
- Both color layers are opaque color layers, which produce an opaque visual impression when viewed in transmitted light, at least when the layer thickness is sufficient.
- the visual impression of the second subarea generated when viewed in reflected light is primarily, preferably exclusively, based on the visual impression of the printing ink used for the second ink layer because of the full-surface imprint of the second ink layer.
- the structure size of the grid is selected such that the individual raster elements, for example raster points, grid lines or point-like recesses, are no longer visible to the naked eye are.
- the characteristic dimensions of the raster elements, such as size and spacing, are for this purpose preferably less than 100 ⁇ m or less than 50, 20, 10, 5, 2 or 1 ⁇ m. Therefore, the visual impression that the first partial area generates on the viewer is based on a mixture between the impression produced by the applied first color layer, optionally additionally influenced by a background color, and depends on the (percentage) degree of coverage of the first color layer in the first partial area.
- the hue of the printing inks used for the two color layers is chosen such that both partial regions produce a similar visual impression on the viewer when viewed in incident light against a white background.
- colorless printing inks are used for both color layers, wherein for the raster-like imprint in the first subarea, in contrast to the ink used for the full-surface imprint, darker printing ink is used, ie a darker grayscale, so that when viewed in reflected light the mixed from the darker grid color and the white background visual impression of the first portion resembles the impression of full-surface imprint in the second portion.
- the second subregion When viewed in transmitted light, the second subregion appears opaque because of the full-surface imprint of the opaque color, while in the first sub-region the light shines through the recesses in the grid and can be perceived by the viewer as a bright visual impression.
- both color layers Preferably, both color layers have a comparable or identical opacity.
- colorless printing inks instead of colorless printing inks, it is also possible to use multicolored printing inks.
- an identical visual color impression can be produced in a similar manner by suitable choice of the printing inks when viewed in reflected light in the first and the second subarea, while differently bright visual impressions are produced when viewed in transmitted light.
- a grid-like imprint can likewise be used in the second subarea, which, however, differs in the (percentage) degree of coverage from the raster in the first subarea.
- the first color layer applied in the first partial region is translucent and the second colored layer applied in the second partial region is opaque.
- both color layers can in turn be applied like a grid.
- this second preferred embodiment allows in a simple and therefore preferred manner a full-surface application of both color layers in both partial areas.
- the printing inks for both color layers are selected such that the same visual color impression results from both partial areas when viewed in reflected light, while when viewed in transmitted light, the second covering color layer has a darker effect than the translucent color layer. This can be realized by the fact that both inks have the same base printing ink.
- a suitable choice of the mixing ratios between the base printing ink and each transparent white or opaque white the use of opaque or transparent white plays no role for the impression produced when viewed in reflected light, so that the viewer both partial areas produce a substantially identical visual impression.
- Opaque white has a significantly reduced transparency compared to transparent white, so that the second subarea is visible when viewed in transmitted light as preferably opaque area, while the first subarea appears much brighter due to the higher translucency of transparent white. Shading or darkening, as in the first partial area, does not occur in the second partial area when viewed in transmitted light or only to a lesser extent. The degree of shading or darkening of the second subregion depends on the opacity of the opaque white color used and the layer thickness of the second opaque color layer.
- a colored base ink is used. This results in the viewer in incident light in both areas of visually the same color-colored color impression. Since the first color layer is translucent due to the use of transparent white, the first partial area also has the color tone of the base printing ink, even in transmitted light. In contrast, in the second subarea, the covering, preferably opaque, impression of the opaque white color predominates in transmitted light, since the light / dark contrast arising with the first subarea is more strongly perceived by the observer. In addition, the eye of the observer undertakes a white light adjustment with the first subarea, so that any remaining brightly colored components additionally recede in the second subarea.
- the second subarea also colorful pigments are covered by the opaque pigments of the opaque white color, so that the multicolored visual impression is effectively suppressed in the second subarea when viewed in transmitted light.
- the second subarea is therefore gray to black despite the brightly colored color layer in the transmitted light.
- the first and second subareas thus differ not only in brightness but also in the brightly colored color impression, the first subarea exhibiting a higher color strength, ie a more intense color, and the second subarea, in transmitted light, having a substantially colorless effect ,
- This color change between reflected light and transmitted light in the second subregion can be adjusted by a suitable mixing ratio between base printing ink and opaque white, wherein preferably the proportion of opaque white in the printing ink for the second ink layer is substantially higher than the proportion of the base printing ink.
- the ideal amount of opaque white depends generally on the opacity of the base printing ink or its multicolored pigments. This covering ability depends, for example, on the chemical structure of the pigments and the wetting with the surrounding binder.
- the first color layer in the first partial region has a smaller layer thickness than the second color layer in the second partial region.
- the same printing ink can be used to apply the two different color layers.
- Both color layers can also have the same coverage, that is, for example, be applied in the same pattern or preferably over the entire surface.
- both layer thicknesses are not perceived, especially in opaque color layers, so that in both subsections results in a substantially identical visual impression.
- both subsections have a different light transmission due to the different layer thicknesses.
- both layer thicknesses are suitably chosen so that the different light transmittances can be perceived by a viewer.
- All described embodiments of the security element according to the invention are preferably characterized by a single-layered printing of the two color layers on the translucent substrate. On the one hand, this reduces the pressure level of the printed layer, which reduces the risk of abrasion and contamination. On the other hand, by applying only one printing layer, the manufacturing process is simplified accordingly. Even with grid-like application of the printing inks, in contrast to the known security elements, the screen dots do not have to be applied precisely to, for example, other screen dots. In addition, the single-layer imprint no longer poses the problem of wet-on-wet printing.
- a translucent, grid-like applied color layer may be provided in the first subarea and in the second subarea a covering, full-surface applied color layer with optionally different layer thickness.
- the two subareas can each be arranged on the front and back of the translucent substrate. Preferably, however, they are arranged on a common first surface side of the translucent substrate and lie there in shock. There is thus no overpressure of the two color layers and both subregions form a coherent overall area.
- the total area when viewed in reflected light gives no information, so that information is given to the viewer only in transmitted light. This already obscures the presence of transmitted light information.
- a further third color layer is arranged on the rear surface side opposite the first surface side, which overlaps with at least the first or second partial area when viewed in transmitted light.
- the third color layer is applied in a third partial area, which corresponds to the total area of the first and second partial area on the opposite front side.
- the third color layer is translucent, this results in a color impression for the observer on the back when viewed in reflected light, which corresponds to a combination of the back, translucent color layer with the front color layers as the background.
- the opaque, preferably opaque, second partial region of the front side is easily recognizable. This results when viewed in transmitted light from the back side inverted the same transmitted light information as when viewed in transmitted light from the front. Both information is when looking at the front and the back in transmitted light precisely to each other, without requiring a precise pressure.
- the color layer applied on the reverse side in the third subregion can be opaque, so that again a uniform color impression results when viewed in reflected light on the back side, which here, however, depends only on the color impression of the opaque ink layer applied on the back side.
- the opaque color layer applied on the back In transmitted light, the opaque color layer applied on the back initially appears opaque or at least perceptibly reduced light transmittance.
- a perceptibly increased opacity may result in the overlay of the opaque color layers, whereby even when viewed in transmitted light, the transmitted light transmitted over the third subregion. Information of the front sections is still recognizable.
- the third color layer in the third subregion can be applied over the entire surface or in the manner of a grid.
- the third partial area may also take a different form from the front-side total area of the first and second partial areas. This results in further design options that affect the perception when viewing the front and the back in incident light, as well as when viewed in transmitted light.
- a further fourth partial area may be provided with a fourth color layer different from the third color layer.
- the third and fourth subareas form, on the reverse side, in a similar manner as on the front side, the first and second subareas, a coherent overall area and generate Viewing in incident light on the back of a substantially identical visual impression, the third portion produces a brighter visual impression when viewed in transmitted light over the fourth portion.
- the color layers on the back can be opaque and / or translucent, applied in a grid-like manner and / or over the entire surface and / or have different layer thicknesses.
- the choice of hue, Ab- and coverage and also the contours of the back partial areas is done suitably to the first and second portions on the front of the security element.
- the front and rear subregions, when viewed in reflected light may each have identical or different hues.
- the back can be provided with the same, optionally reversed incident and transmitted light information as the front.
- the visual impressions, in particular the color impressions, which arise on the front and back when viewed in incident light preferably identical, which can be achieved in the simplest case that in the first and third part on the one hand and in the second and fourth Part area on the other hand, each identical color layers are applied.
- the rear-side overall area of the third and fourth partial area is arranged congruent to the front-side overall area of the first and second partial area.
- the second and fourth portions are not congruent to each other, but have a mutually different shape and / or are shifted to each other.
- the front and rear sides when viewed in reflected light, convey identical, possibly laterally reversed, information.
- the darker opaque regions of the second and fourth subregions can be seen, which results in regions in which the second and fourth subregions overlap, resulting in an additional reduction of the light transmittance and thus a contrast enhancement.
- the fourth subregion is particularly preferably located completely within the second subregion, resulting in a two-stage transparent image, similar to a watermark.
- recesses in the form of non-printed areas can be provided within the various partial areas on the front and / or rear side. Furthermore, it is also possible to use pure opaque white (without admixing a base printing ink) instead of the opaque color layer.
- a fifth ink layer is provided on the translucent substrate in a fifth partial region and a sixth ink layer different from the fifth ink layer is provided in a sixth partial region.
- the fifth and sixth partial areas when viewed in reflected light, form a coherent overall area, which is arranged next to the contiguous overall area of the first and second partial areas. The two overall areas do not overlap.
- the fifth and sixth sub-areas continue to produce a substantially identical visual impression which differs from the visual impression of the first and second sub-areas when viewed in incident light. When viewed in transmitted light, the fifth subregion produces a brighter visual impression than the sixth subregion.
- the fifth and sixth color layers may be opaque and / or translucent, applied in a grid-like manner and / or over the entire surface and / or have different layer thicknesses. This results in additional degrees of freedom for the design and information generation of the security element.
- the information for the viewer is composed of the total area of the first and second subareas on the one hand and the adjacent overall area of the fifth and sixth color layers on the other.
- the observer obtains information which is composed of up to four different visual impressions: the first and fifth subareas can be distinguished on the basis of their generally different brightness.
- the first and fifth subareas can be distinguished on the basis of their generally different brightness.
- they are also distinguishable by their color (according to the base printing ink used).
- the second and sixth portions are also distinguishable by their generally different opacity.
- the two total areas are arranged at least partially adjacent to one another and thus border directly upon each other when viewed in reflected light, so that there are at least partially no unprinted areas or recesses between the entire areas.
- the two total areas thus form a large, coherent total area.
- the visual impression of the first and fifth partial area on the one hand and the second and sixth partial area on viewing on the other hand is then selected to be substantially identical, and the outlines of the partial areas suitably selected so that, when viewed in transmitted light, the first and fifth partial areas on the one hand and of the second and sixth portions, on the other hand, appear as contiguous areas, respectively.
- a transmitted light information which is composed of only two different visual impressions, but which differs from the incident light information, which is also composed of two visual impressions.
- the first, second, fifth and sixth partial regions are printed on the first surface side of the translucent substrate in a continuous manner, butt-to-joint.
- the two entire areas are arranged only partially or not at the exact fit next to each other.
- the total area of the additional color pair is spaced from the total area of the first color pair so that there are at least two non-contiguous areas.
- the additional pair of colors describes another motif or complements the motif of the first pair of colors.
- the additional color pair is not arranged above the first color pair or does not overlap it.
- the one or more additional color pairs can be arranged on the front, back or on both sides of the security element.
- the printing inks used for the various color layers in addition to the visually recognizable dyes also include other, in particular mechanically detectable feature substances, such as IR absorbers or luminescent substances. These can both in the Ink for the opaque and translucent paint layer are introduced.
- the front and / or the back side of the translucent substrate of the security element can additionally be provided with optically variable effect layers, which are preferably highly translucent, for example an interference thin layer, a layer of pigments of such interference layers, a layer with interference pigments based on a mica, such as an Iriodin pigment from Merck, a liquid crystal color layer, a transparent or semitransparent metallization or even a diffraction structure, for example in the form of an embossed hologram.
- optically variable effect layers are preferably highly translucent, for example an interference thin layer, a layer of pigments of such interference layers, a layer with interference pigments based on a mica, such as an Iriodin pigment from Merck, a liquid crystal color layer, a transparent or semitransparent metallization or even a diffraction structure, for example in the form of an embossed hologram.
- At least one glossy or heavily matted lacquer is applied to at least one side of the security element, which produces further information in the tilting.
- the area printed with the varnish or the color is preferably applied in the form of a so-called spot varnish and thus has its own motif. It may be overlapping, partially overlapping or arranged only within the range of opaque and non-opaque color pairs.
- the optically variable color or the metallic vapor deposition is individualized by means of a laser without changing the opacity of the corresponding coating. This effect is known, for example, from the documents WO 2008/080499, DE 10 2008 028 187 and DE 10 2008 027952, the disclosure of which is fully incorporated in this application in this regard.
- the security element can be designed as a transfer element by the color layers are applied detachably on the first surface side.
- the security element can be detachably applied to a carrier layer.
- the security element is preferably designed for application to a window region of a data carrier.
- the translucent substrate is preferably designed as a carrier film, for example in the form of a film element.
- the security element can be completed prior to application to the disk and to be printed, for example.
- an as yet unfinished security element for example an unprinted carrier foil element, can also first be applied to the data carrier. Only after application to the data carrier, the still missing color layer (s) are applied in the various subregions of the translucent substrate.
- the different color layers are not only applied to the translucent substrate, but also on the surface of the data carrier itself, which can be done in a single process step. This allows a good optical integration of the safety unit or the translucent substrate of the security element in the design of the data carrier can be achieved.
- the various motifs of the security element or at least one of these motifs are reprinted on the data carrier, preferably outside the window, which facilitates the authenticity check of such a data carrier by a simple comparison of two preferably closely imprinted motifs.
- the visually identical color pairs with different opacity or transparency are preferably applied in gravure, flexo, inkjet, letterpress or offset printing processes. If a register-accurate alignment of the color pairs are to be achieved, the simultaneous printing in the offset or high-pressure method is preferably used. Effect colors are preferably applied in the gravure, screen or flexographic printing process.
- the grid structures used for the opaque and non-opaque colors of one or more color pairs can also be part of a Moere raster element, which for example by means of photographic
- Films, display or mobile phone display can be verified in transmitted light or in supervision on a print.
- the colors of the color pairs are replaced, at least in some areas, by one or more metallic layers, which are preferably vapor-deposited onto the substrate.
- a different opacity between the respective metallic layers produced either by different layer thicknesses or by screening.
- the metallization of the first subregion which produces a brighter visual impression when viewed in transmitted light relative to the second subregion, has a smaller layer thickness than the metallization of the second subregion.
- the screened areas are preferably produced by demetallization. In this case, preference is given to using a washing process, as described, for example, in document WO 99/13157, the disclosure of which is incorporated in full in this application.
- 1 shows a banknote with a security feature
- 2a to 2c are cross sections through a security feature
- a banknote 1 is shown in Fig. 1 as a data carrier. This comprises a window area 2 in the form of a recess or a hole, over which a transparent carrier film 3 is applied.
- the banknote 1 itself is opaque, so that when viewed in transmitted light, the visual impression of the observer comes only from the security element, that is, from the printed transparent carrier film 3.
- Fig. 2a a cross section through the window portion 2 of the banknote 1 is shown.
- the transparent carrier film 3 of the security element is applied over the window area 2 of the data carrier already before the application of the different color layers, that is to say before the completion of the security element.
- the translucent substrate 3 is printed in a first subregion 4 with a translucent, translucent color layer and in a second subregion 5 with a opaque, opaque color layer.
- printing is effected beyond the carrier film 3 in the edge regions, so that a color layer is also arranged directly on the banknote 1 in the partial region 6.
- the underside of the carrier film 3 at the bottom is also printed in a subregion 7 with a covering ink layer and printed in a subregion 8 with a translucent ink layer.
- the subregions 5, 7, in which the respectively covering ink layer is applied, are congruent to one another on the front and rear side of the carrier film 3.
- the embodiment shown in Fig. 2c substantially corresponds to the embodiment shown in Fig. 2b.
- Fig. 3a shows a plan view of the front of a security element. Shown is the visual impression that results when viewing the front in reflected light.
- the abutting edge 10 between the subregions 4, 5 with the opaque and the translucent color layer is drawn with a broken line.
- these two subregions are indistinguishable when viewed in incident light, since both subregions produce an identical color impression. Therefore, the observer does not perceive the abutting edge 10, and the uniform visual impression indicated by the uniform hatching results.
- Fig. 3b shows a plan view of the back of the security element of Fig. 3a. Shown is the visual impression that results when looking at the back in reflected light. As in the plan view of the front side shown in FIG. 3a, a uniform visual impression is again produced, as indicated by the hatching. With the broken line the abutting edge 11 of the abutting portions 7, 8 is shown with each of the opaque and the translucent color layer, which is not recognizable to the viewer when viewed in incident light.
- Fig. 3c shows a view through this security element, that is the visual impression that results when viewed in transmitted light.
- the bright area 4 with the translucent color layer differs clearly from the opaque, darker area 5 with the covering color. layer.
- the abutment edge 10 is therefore clearly visible and provides the viewer with transmitted light information, which differs from the reflected-light information shown in FIG. 3a.
- the opaque subregion 7 can be perceived in transmitted light which, when viewed in transmitted light, lies completely within subregion 5 and produces increased opacity.
- simultaneous printing inks or mixtures of at least two simultaneous printing inks are used.
- the color used for the translucent color layer is a mixture of 30% transparent white (GSI number: 68 0170) and 70% blue (GSI number: 68 0141), while for the opaque color layer, 85% opaque white (GSI number 68 0172) and 15% blue (GSI number: 680141).
- the GSI numbers refer to the coding of the simultaneous inks of the manufacturer Gleitsmann Security Inks.
- the opaque white color used contains occlusive TiCh pigments.
- the opaque white fraction in the opaque printing ink is substantially higher than the transparent white fraction in the translucent color. Nevertheless, when viewed in incident light, the corresponding color layers produce the same visual multicolored color impression.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL09777748T PL2323852T3 (en) | 2008-08-08 | 2009-08-07 | Safety element having incident and transmitted light information |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008037128A DE102008037128A1 (en) | 2008-08-08 | 2008-08-08 | Security element with incident and transmitted light information |
PCT/EP2009/005755 WO2010015418A1 (en) | 2008-08-08 | 2009-08-07 | Safety element having incident and transmitted light information |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2323852A1 true EP2323852A1 (en) | 2011-05-25 |
EP2323852B1 EP2323852B1 (en) | 2013-12-11 |
Family
ID=41203827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09777748.6A Not-in-force EP2323852B1 (en) | 2008-08-08 | 2009-08-07 | Safety element having incident and transmitted light information |
Country Status (10)
Country | Link |
---|---|
US (1) | US20110139024A1 (en) |
EP (1) | EP2323852B1 (en) |
CN (1) | CN102177029B (en) |
AU (1) | AU2009278220B2 (en) |
BR (1) | BRPI0917136A2 (en) |
DE (1) | DE102008037128A1 (en) |
MX (1) | MX2011001466A (en) |
PL (1) | PL2323852T3 (en) |
RU (1) | RU2535269C2 (en) |
WO (1) | WO2010015418A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010054760A1 (en) * | 2010-12-16 | 2012-02-16 | Giesecke & Devrient Gmbh | Security element, method of making same and disk |
DE102012007747A1 (en) * | 2012-04-18 | 2013-10-24 | Giesecke & Devrient Gmbh | Optically variable security element |
DE102012015900A1 (en) * | 2012-08-10 | 2014-03-06 | Giesecke & Devrient Gmbh | Security element with coloreffective grid |
US9114625B2 (en) | 2013-06-26 | 2015-08-25 | Nike, Inc. | Additive color printing |
US10385514B1 (en) | 2014-12-30 | 2019-08-20 | Idemia Identity & Security USA LLC | Identification document with dynamic window |
DE102015008971A1 (en) * | 2015-07-10 | 2017-01-12 | Giesecke & Devrient Gmbh | Security element and disk |
US9463642B1 (en) | 2015-07-29 | 2016-10-11 | Eastman Kodak Company | Image authentication using material penetration characteristics |
US9375950B1 (en) | 2015-07-29 | 2016-06-28 | Eastman Kodak Company | Image authentication using surface deformation characteristics |
US9375949B1 (en) | 2015-07-29 | 2016-06-28 | Eastman Kodak Company | Image authentication using lateral spreading characteristics |
EP3362298B1 (en) | 2015-10-15 | 2020-01-15 | Assa Abloy AB | Mirrored fluorescent security feature |
DE102016000592A1 (en) | 2015-12-30 | 2017-07-06 | Giesecke & Devrient Gmbh | Plastic film molding, manufacturing process and blister |
DE102016219288A1 (en) * | 2016-10-05 | 2018-04-05 | Bayerische Motoren Werke Aktiengesellschaft | Display element with transitional lamination of partial foils and coatings |
US10272712B2 (en) * | 2017-05-09 | 2019-04-30 | Abcorp Na Inc. | Plastic card with security feature |
CN109532273B (en) * | 2018-10-23 | 2020-11-17 | 深圳市雄帝科技股份有限公司 | Method for making colour anti-fake certificate card and its colour anti-fake certificate card |
CN109624549B (en) * | 2018-10-23 | 2021-01-08 | 深圳市雄帝科技股份有限公司 | Method for manufacturing security card with color portrait and security card |
FR3103736B1 (en) * | 2019-11-29 | 2021-12-10 | Idemia France | Custom image formed from a metallic hologram |
EP4019270A1 (en) | 2020-12-23 | 2022-06-29 | Thales DIS France SA | A security assembly and method for manufacturing the same |
US20230166554A1 (en) * | 2021-10-12 | 2023-06-01 | The Government of the United States of America, as represented by the Secretary of Homeland Security | Microprinting techniques for printing security symbols on a substrate |
Family Cites Families (13)
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DE2901150C2 (en) * | 1979-01-12 | 1981-02-19 | Gao Gesellschaft Fuer Automation Und Organisation Mbh, 8000 Muenchen | Identification card with authenticity features that can be checked in incident and transmitted light and the process for their production |
US4407525A (en) * | 1979-10-04 | 1983-10-04 | Gao Gesellschaft Fur Automation Und Organisation Mbh | Identification card with hallmark for authentication by incident and transmitted light |
GB2282563A (en) * | 1993-10-07 | 1995-04-12 | Central Research Lab Ltd | A composite image arrangement for documents of value |
DE4334847A1 (en) * | 1993-10-13 | 1995-04-20 | Kurz Leonhard Fa | Value document with window |
DE69312720T3 (en) * | 1993-12-10 | 2003-11-27 | Agfa Gevaert Nv | Security document with a clear or translucent support and with interference pigments contained therein |
GB9612496D0 (en) * | 1996-06-14 | 1996-08-14 | De La Rue Thomas & Co Ltd | Security device |
DE10226114A1 (en) | 2001-12-21 | 2003-07-03 | Giesecke & Devrient Gmbh | Security element for security papers and documents of value |
EP1447234A1 (en) * | 2003-02-13 | 2004-08-18 | Kba-Giori S.A. | Printing process on a security element and security element |
JP4392826B2 (en) * | 2003-05-16 | 2010-01-06 | 日本発條株式会社 | Object identification medium and identification method |
JP2005022292A (en) * | 2003-07-03 | 2005-01-27 | Nippon Oil Corp | Identifying structure of object and object provided therewith |
GB0409747D0 (en) * | 2004-04-30 | 2004-06-09 | Rue De Int Ltd | Improvements in substrates incorporating security devices |
DE102007030219A1 (en) | 2007-02-13 | 2008-08-14 | Giesecke & Devrient Gmbh | Security element for a value document |
DE102008028187A1 (en) | 2008-06-12 | 2009-12-17 | Giesecke & Devrient Gmbh | Security element with optically variable element. |
-
2008
- 2008-08-08 DE DE102008037128A patent/DE102008037128A1/en not_active Withdrawn
-
2009
- 2009-08-07 WO PCT/EP2009/005755 patent/WO2010015418A1/en active Application Filing
- 2009-08-07 RU RU2011108215/12A patent/RU2535269C2/en not_active IP Right Cessation
- 2009-08-07 BR BRPI0917136A patent/BRPI0917136A2/en not_active Application Discontinuation
- 2009-08-07 CN CN2009801398174A patent/CN102177029B/en not_active Expired - Fee Related
- 2009-08-07 MX MX2011001466A patent/MX2011001466A/en active IP Right Grant
- 2009-08-07 EP EP09777748.6A patent/EP2323852B1/en not_active Not-in-force
- 2009-08-07 PL PL09777748T patent/PL2323852T3/en unknown
- 2009-08-07 US US13/058,071 patent/US20110139024A1/en not_active Abandoned
- 2009-08-07 AU AU2009278220A patent/AU2009278220B2/en not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO2010015418A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL2323852T3 (en) | 2014-04-30 |
DE102008037128A1 (en) | 2010-02-11 |
AU2009278220A1 (en) | 2010-02-11 |
BRPI0917136A2 (en) | 2015-11-17 |
EP2323852B1 (en) | 2013-12-11 |
RU2011108215A (en) | 2013-10-10 |
WO2010015418A1 (en) | 2010-02-11 |
MX2011001466A (en) | 2011-03-04 |
RU2535269C2 (en) | 2014-12-10 |
AU2009278220B2 (en) | 2013-12-05 |
CN102177029B (en) | 2013-12-18 |
CN102177029A (en) | 2011-09-07 |
US20110139024A1 (en) | 2011-06-16 |
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