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EP2740607A1 - Système de sécurité pour papiers de sécurité, documents de valeur ou analogues - Google Patents

Système de sécurité pour papiers de sécurité, documents de valeur ou analogues Download PDF

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Publication number
EP2740607A1
EP2740607A1 EP13005419.0A EP13005419A EP2740607A1 EP 2740607 A1 EP2740607 A1 EP 2740607A1 EP 13005419 A EP13005419 A EP 13005419A EP 2740607 A1 EP2740607 A1 EP 2740607A1
Authority
EP
European Patent Office
Prior art keywords
image
line
security
layer
printing
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
Application number
EP13005419.0A
Other languages
German (de)
English (en)
Other versions
EP2740607B1 (fr
Inventor
Christof Baldus
Alexander Bornschlegl
Peter Schiffmann
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.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and Devrient GmbH
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 Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP2740607A1 publication Critical patent/EP2740607A1/fr
Application granted granted Critical
Publication of EP2740607B1 publication Critical patent/EP2740607B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • 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
    • B42D25/342—Moiré effects
    • 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
    • B42D25/369—Magnetised or magnetisable materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks

Definitions

  • the invention relates to a security system for security papers, which allows to check by means of a test element provided on the security paper security element on its authenticity.
  • the invention further relates to a value document with such a security system.
  • the invention also relates to a manufacturing method for a security system for securities, value documents or the like, in which a security element provided on the value document can be checked by means of a checking element.
  • a security element that includes a print pattern having a line grid structure that encodes an image.
  • An analyzer which also has a line grid pattern, can be placed over the print pattern so that when viewed in a transparent view within a certain viewing angle range, the image becomes visible.
  • the analyzer is designed so that it covers components of the first print pattern, which disturb the image impression.
  • this is realized by the first print pattern being a crossed line screen, and the analyzer serves to cover the unidirectional elements of that line screen obscuring the image so that only the other directional elements of the line screen are still visible and deliver the picture.
  • a security system and a value document with such a security system and a production method for such a security system are known.
  • reversibly magnetically orientable pigments which are arranged in a printed image, are used in combination with a static printed image.
  • the optically perceptible impression changes, for example because the magnetic pigments have the function of a shutter which is opened under the influence of magnetic fields. If the magnet is placed under the security element, a printed image is visible, which is otherwise covered by the magnetic pigments.
  • Magnetically orientable pigments are also associated with security elements of the WO 2012/130370 A1 .
  • the invention has for its object to provide a security system that makes the beneficial effect of magnetically alignable pigments advantage.
  • a security system for security papers, documents of value or the like comprising a security element with a carrier, a print pattern having a first grid structure, which is arranged in a first layer on the carrier, a pressure element, which can be aligned by an external magnetic field Contains pigments, is arranged in a second layer on the carrier and the printing pattern at least partially covered, a magnetic element, the one has second grid structure of north and south poles, wherein either the first grid structure or the second grid structure encodes an image and the grid structures of print pattern and magnetic element are designed to match each other so that the image within a certain viewing angle range is perceived when the magnetic element under the pressure element is arranged to align the pigments of the printing element in the second grid structure.
  • a security system for security papers, documents of value or the like comprising a security element with a carrier, a print pattern having a first grid structure, which is arranged in a first layer on the carrier, a pressure element, which can be aligned by an external magnetic field Pigments contains, is arranged in a second layer on the carrier and the print pattern at least partially covered, a magnetic element having a second grid structure of north and south poles, wherein the first grid structure and the second grid structure are designed to match each other so that they complement each other to encode an image and the image is perceptible when the magnetic element is disposed below the printing element to align the pigments of the printing element in the second screen structure.
  • the object is likewise achieved by a value document which has said security element and said magnetic element at different areas.
  • a manufacturing method for a security system for security papers, documents of value or the like in which a security element is produced by a carrier in a first layer having a printing pattern, which has a grid structure, and in a second layer, providing a printing element containing pigments alignable by an external magnetic field and at least partially covering the print pattern, providing a magnetic element having a second grid structure of north and south poles, wherein either the first grid pattern or the second grid pattern is formed so that it encodes an image and the grid structures of print pattern and magnetic element are designed to match each other so that the image within a certain viewing angle range is perceived when the magnetic element is disposed under the printing element and aligns the pigments of the printing element in the second grid structure ,
  • a security element is produced by providing a carrier in a first layer with a first printing pattern, which has a grid structure, and in a second layer with a A pressure element which contains pigments which can be oriented by an external magnetic field and which at least partially covers the printed pattern, a magnetic element is provided which has a second grid structure of north and south poles, wherein the first grid structure and the second grid structure are made to fit one another, that they complement one another to code an image and the image is perceptible when the magnetic element is placed under the printing element and aligns the pigments of the printing element in the second screen structure.
  • the invention combines the static print pattern in the first layer with the partially overlapping printing element in the second layer.
  • This pressure element is made of magnetically orientable pigments, which occupy a certain structure when the magnetic element under the Security element is placed.
  • the static, so spatially invariable print pattern and the magnetic element each have a grid structure, which cooperate so that the first image with good contrast is recognizable when the two grid structures match each other.
  • the second grid structure of the north and south poles of the magnetic element is transferred as a grid structure in the magnetic pigments of the printing element of the second layer, so that (only) with correspondingly applied magnetic element, the second grid structure in the second layer is present. Only then can the first and second grid structures interact to make the picture perceptible.
  • first and second grid structure can be done in several ways.
  • raster structure designates a pattern that includes a basic structure in which there is some deviation from strict periodicity or regularity for image coding.
  • An example of such a raster structure would be, for example, a wide-coded line raster or a dot raster.
  • a first way in which the raster structures interact is that the pigments of the printing element aligned in the second raster structure cover components of the raster structure of the printing pattern which obscure the encoded image.
  • the aligned magnetic pigments lift the fog and make the image visible in the print pattern. This option is referred to below as variant 1.
  • a third type of interaction is that both raster structures together form a raster structure that encodes an image.
  • These raster structures can be obtained, for example, by rasterizing an image and decomposing the resulting overall raster structure into two individual raster structures which no longer encode the image in each case. This is below the variant 3.
  • Pigments which are alignable by an external magnetic field are understood to be pigments intended for printing, whose degree of coverage, that is to say radiation absorption or reflection, can be temporarily changed by the action of an external magnetic field.
  • the second grid structure of the magnetic element can thus be converted into a corresponding grid structure with regard to the transparency of the printing element.
  • Corresponding examples of such pigments are in WO 2009/074284 A2 whose disclosure content is fully incorporated in this regard.
  • the print pattern comprising the first raster structure is spatially static.
  • the second screen structure is generated in the printing element depending on the position of the magnetic element.
  • the second grid structure which is impressed in the printing element in a magnetic manner move.
  • the first grid structure must lie in a certain position to the second grid structure to the image visible
  • suitable position of the magnetic element with respect to the security element, in this description, the image-forming registration of the first to second grid structure understood. Since the magnetic member is not so firmly connected to the security element that a relative position change would be impossible, a user can easily perform the desired shift to check the security system for the effect that the coded image disappears or appears depending on the position of the magnetic element ,
  • the inventive concept achieves the advantage that the image is only visible under the action of a magnetic element ultimately serving as an analyzer. This effect is not reproducible by simple copying. Also, the coded image can not be made visible without the availability of the magnetic element. In addition, one does not regard the magnetic element as mediating the raster structure mediated by it, and thus its significance for the analyzer effect, since only the interaction of the second raster structure of the magnetic element and the first raster structure of the print pattern reproduces the image. What the individual grid structures look like is not recognizable. In particular, it is not possible to emulate the magnetic element if only the security element is available. The security system thus works according to the key / lock principle. Only the one who has the magnetic element can check the authenticity of the security element, and it is difficult, if not impossible, to close the security element to the structure of the magnetic element.
  • the invention also makes it possible to work with a magnetic element which is firmly connected to the security element, for example by providing the two elements at different areas of a value document. By a suitable folding process, the magnetic element is then folded under the security element and the magnetic pigments aligned properly to make the image visible. Any otherwise necessary twisting of the magnetic element to achieve the appropriate relative position of security element and magnetic element is then no longer necessary.
  • Such a twist can usually be dispensed with in variant 2, since a moiré pattern always occurs between the first and second grid structures, except in very specific parallel positions. Of course, twisting leads to more or less strong formation of the moiré pattern. However, this only concerns the question of whether the picture is particularly good or rather less recognizable. Recognizable it remains up to exceptional situations always.
  • twisting can be dispensed with if the printing pattern has two line patterns which are crossed to one another, one line direction of which codes the printed image and the other line direction obscures the printed image.
  • Another advantage is that a much easier-to-manufacture structure of the security element is achieved, since only two layers are required, the z. B. can be conveniently placed on the front and back of the carrier.
  • the second line grid of the printing pattern can additionally encode a motif.
  • the second not only does the line grid serve to obscure the image encoded by the first line raster, it also provides a (further) motif that can be perceived together with the image outside the specific viewing angle range.
  • the magnetic element thus ensures that, depending on the position of the magnetic element, either the image is perceptible or the motif.
  • the image in the first line grid and, if present, the motif of the second line grid can have different colors. Thus, both the obfuscation and the recognition of the combination of image and subject outside the particular viewing angle range can be required.
  • the line spacing for line grids can be freely selected within the scope of the invention.
  • a good combination between easy recognizability and minimization of the printing outlay arises at a line spacing of the first and second line grid of 0.15 mm to 0.3 mm, more preferably in the range of 0.2 mm.
  • the line modulation can then be between 0.05 mm and 0.15 mm.
  • the second line grid may encode a motif.
  • image in connection with the first line grid or “motif” in connection with the second line grid have been used only for the purpose of distinguishing the corresponding elements or Structures selected. The different terms should not be linked to different meaning. The same applies to the term “motif picture”, which will be introduced later. These terms are merely intended to describe that image, motif and motif image each provide their own visually perceptible information. This may include, for example, graphic information, an image, a pattern, numbers, letters or other characters.
  • a line width modulation can be used to achieve a gray-tone representation of the image or the subject. Particularly preferred is and a particularly effective shading effect shows a one-sided line width modulation.
  • the first or second line raster to encode the image or motif as a black-and-white representation by providing corresponding recesses in the line raster. In these recesses then no line grid is present, so that the recessed area is then perceived without further structure.
  • recess there is both a recess of the lines, i. a bright surface, as well as a recess of the line spaces, so to understand a dark area.
  • the printing pattern is applied over the printing element, since then even a small change in transparency of the printing element under magnetic field influence already makes the recognizability of the image possible.
  • Another or additional possibility of converting a slight change in the degree of transparency in the printing element into a good recognizability of the coded image is to provide a contrast-increasing planar layer under the printed pattern and the printing element, preferably of a dark color with a light reference value below 0.5 (in a Scale between 0 and 1, where 0 is ideal for black and 1 for ideal white).
  • the security element can be designed, in particular, as a security thread, tear-open thread, security strip, security strip, patch or as a label for application to a security paper, value document or the like.
  • the security element can span transparent areas or recesses.
  • security paper is understood here in particular as the precursor that can not yet be processed to form a value document which, in addition to the security element according to the invention, may also have further authenticity features (such as, for example, luminescent substances provided in the volume).
  • Value documents are here understood, on the one hand, documents produced from security papers.
  • value documents can also be other documents and objects which can be provided with the security feature according to the invention, so that the value documents have non-copyable authenticity features, whereby an authenticity check is possible and at the same time unwanted copies are prevented.
  • Chip or security cards such. Bank or credit cards are other examples of a value document.
  • the reciprocal property of translucency is opacity.
  • the production method according to the invention can be developed so that the described preferred embodiments and embodiments of the security element are produced.
  • the first printing pattern and / or the printing element is designed to be machine-readable.
  • the printed colors or fabrics are mixed with materials with machine-readable properties, such as machine-readable pigments, or consist of materials with machine-readable properties, such as metallic layers.
  • Machine-readable properties are, for example, magnetism, electrical conductivity, absorption or emissivity for electromagnetic waves with specific wavelengths, for example for the infrared or ultraviolet wavelength range.
  • These machine-readable properties can be determined, further processed, displayed or graphically displayed with corresponding detectors or sensors of processing machines.
  • the first printing pattern and the printing element can in this case have machine-readable properties and can be individually read out or interact, wherein the machine-readable features of both elements produce a common machine-readable feature.
  • Fig.1 shows a simplified section through a security system 1.
  • the security system 1 comprises a security element 2 and a magnetic element 10.
  • the magnetic element 10 is located below the security element 2.
  • This configuration represents a read-out, which allows a review of the security element 2.
  • the basis for the security element 2 is a carrier, which can be realized for example by a plastic film. This plastic film is preferably transparent or even translucent, as will be explained later.
  • the security system 1 can be provided, for example, for a banknote or a security card, such as a credit card. Especially In some cases, it can be arranged above a window provided in the corresponding value document.
  • a first layer 19 formed by a print representing a static print pattern.
  • the bottom 4 has a second layer 20 with a print.
  • the imprint on top 3 is in the form of a line grid pattern, i. in the first layer 19 on the upper side 3 is a line grid structure 5. Due to the thickness d of the carrier 2, the layers are arranged at a corresponding distance from each other.
  • an effect pigment layer 6 whose pigments are magnetically aligned.
  • these effect pigments are encapsulated in a microcapsule and are substantially freely rotatable therein.
  • the effect pigments of the effect pigment layer 6 are preferably aligned isotropically in each case within their microcapsule, ie they have no preferred direction in the entirety.
  • certain deviations from an ideal isotropic distribution may occur in practice, depending, for example, on the geometric shape, the magnetizability, the viscosity of an encapsulating liquid or a structure of the encapsulation.
  • the effect pigments align quickly. After elimination of the external magnetic field, they return to their original state.
  • the return may sometimes take a very long time and take a few minutes, hours or even days. Also, a movement of the security element 2 in the earth's magnetic field can cause the return and a largely isotropic distribution of the orientations of the effect pigments. Until this isotropic distribution is achieved, a magnetization pattern generated in the effect pigment layer 6 also remains after removal of the external magnet but initially visible.
  • the microcapsules may, in convenient configurations, contain a gel which provides a restoring force to the magnetically-alignable effect pigments. In this regard, turn on the WO 2009/074284 A2 which explains possible effect pigments in detail here.
  • the effect pigments in the effect pigment layer 6 are brought by the magnetic element 10 into a structure which causes transparent or light spots and dark spots in the effect pigment layer 6.
  • the corresponding magnetic element 10 is to, as in the sectional view of Fig.1 represented, placed under the security element 2. It has a grid structure 11 of north poles N and south poles S, which converts into a corresponding transparency or brightness structure of the effect pigment layer 6.
  • the structure of the magnetic north and south poles of the magnetic element 10 is also a line grid 11.
  • this is purely exemplary.
  • the figure further shows that the line grid structure 5 and the line grid structure generated in the effect pigment layer 6 lie in a certain orientation to one another, which is predetermined by the position of the magnetic element 10.
  • the orientation is such that the line grid structure on the underside 4 shades at least a part of the line grid structure 5, if the security element within a certain viewing angle range, which in Fig.1 is schematically illustrated with the angle ⁇ , viewed in phantom.
  • the line grid structure on the underside 4 is preferably a non-modulated line grid and, as will be explained, serves as an analyzer in the review of the security element 1.
  • the line grid structure 5 on the upper side is formed in one embodiment as a crossed pattern of a first line grid 7 and a second line grid 8.
  • Fig. 2 to see a perspective view of the security element 2, viewed from the top 3 of the wearer ago, shows.
  • the first line grid 7 is modulated.
  • This type of line modulation which is known to the person skilled in the art, causes the first line grid 7 to encode a picture. Without the line grid 8, this image would be clearly visible from the top 3.
  • the second line grid 8 crossed to the first line grid 7 obscures the perception of the image coded in the first line grid 7, in particular because the line grid structures are so large that they are difficult or even imperceptible to the naked eye at normal viewing distance.
  • the structure of the line grid structure 5 on the upper side 3 of the security element 2 requires that the coded by the first line grid 7 image is perceived only under certain conditions with good contrast. These conditions are defined by the line grid structure 5 in the effect pigment layer 6 on the underside 4 of the security element 2, ie ultimately by the line grid structure 11 of the magnetic element 10.
  • the grid structure 11 has a line grid which, when the magnet element 10 is oriented correctly on the underside 4, lies substantially parallel to the line grid 8. Depending on the viewing angle or position of the magnetic element 10, the line grid in the effect pigment layer 6 on the underside 4 of the security element 2 thus shadows the second line grid 8 differently strong.
  • the result is an impressive change effect, through which the image coded by the first line grid 7 appears when the carrier is tilted or when the magnetic element 10 is displaced or disappears again.
  • the line grid 8 encodes an additional motif.
  • the combination of the image encoded by the first line raster 7 and the motif encoded by the second line raster 8 is visible or not dependent on viewing angle or shift position.
  • a complete shading of the second line grid 8 through the line grid of the effect pigment layer 6 on the underside 4 of the carrier which is not shown here for reasons of clarity, however, only the image, which is coded by the first line grid 7 appears. This results in the result of the position or view angle dependent supplement of the image by the subject.
  • the support in this embodiment is required to have a certain degree of transparency or translucency. If one uses a transparent carrier, the image or the image supplemented by the motif appears in a transparent view particularly clearly. However, for certain cases, a translucent carrier may suffice. Also, the Layers 19, 20 are arranged on the same side of a carrier, which may then be absorbent.
  • a translucent carrier is used, which is arranged above a window 9, which is formed, for example, in a banknote or a security card.
  • FIG. 4 shows in a perspective view of the security system of Fig. 3 , The reproduced at the right edge of the drawing sheet FIGS. 5a to 5c show excerpts of the corresponding line grid, which in Fig. 4 are shown. Elements of the representation of Fig. 4 already using the Fig. 3 correspond to described elements are provided with the same reference numerals.
  • the first line grid structure 5 is arranged in the first layer 19. It comprises the first and the second line grids 7, 8.
  • the first and second line grids 7 and 8 cause gray-scale reproduction of image information in the form of the image 12 or the motif 13 by unilateral line width modulation.
  • the line grids 7, 8 are merely of easier recognizability half shown separately. In reality, they are combined in the first line grid structure 5 as a crossed line grid in the first layer 19.
  • the first line grid 7 is, relative to the horizontal of the Figures 5 at a 45 ° angle (for example with a line spacing of 0.1 mm and a modulated line width of 0.05 mm to 0.1 mm) and encoded as a one-sided line grid as picture 12 a closed eye.
  • the thickenings of the line grid are aligned to the right as an example. However, the orientation has no further meaning. Furthermore, in the crossed first line grid structure 5, the second line grid 8 is present, which is exemplary in the -45 ° Angle to the horizontal is arranged. Line spacing and line thickness correspond to those of the first line grid 7. It shows as motif 13 in gray scale an open eye.
  • Fig. 5c shows the effect pigment layer 6 with the line structure 11 which it received through the magnetic element 10. It adjusts (only) when the magnetic element 10 has transferred the grid structure 11 of its magnetic north and south poles to the effect pigment layer 6.
  • the then formed in the effect pigment layer 6 line grid structure of the second layer 20 on the back 4 of the carrier extends at a proper orientation of the magnetic element 10 at a -45 ° angle (line spacing, for example, 0.1 mm, line thickness 0.1 mm). It does not encode information.
  • the crossed first line grid structure 5 in the first layer on the front side comprising the first line grid 7 and the second line grid 8
  • shading occurs through the magnetically structured effect pigment layer 6.
  • the said line grid structures overlap. This applies to the correct orientation of the magnetic element 10, i. with the correct position of the second line grid structure produced in the effect pigment layer 6, which is predetermined by the line grid structure 11 of the magnetic element 10.
  • the superposition of the line grid structures which leads to a recognizability of the image 12 or the motif 13, is achieved by moving the magnetic element 10 under the security element 2.
  • the information visible in supervision of image 12 closed eye
  • the view of the second one disappears Information of the motive 13 (opened eye) is released.
  • the line grid structure in the effect pigment layer 6 shifts optically in the direction of the line direction of the first line grid 7 and covers the second line grid 8.
  • the security system 1 thus makes it possible to generate an image change effect, which can occur both in a change between recognizability and non-recognizability of an image and in the change between two image contents, not only by a viewing angle change, but alternatively or additionally by a movement of the magnetic element 10.
  • the verification in the security system 1 is thus possible because a user puts the magnetic element 10 under the security element 2 and the two rotated against each other and / or shifts until he recognizes the image change. This authenticates the document of value provided with the security element 2.
  • Fig. 6 shows an alternative embodiment for exploiting the effect.
  • a line grid structure 5 is applied, which consists of a first line grid 7 and a second line grid 8 crossed thereto.
  • the first line grid 7 is again at 45 °.
  • the information of the image 12 is effected by a recess in the line raster; it represents the value number "0".
  • the recess can also be made inversely by the gaps in the line grid are omitted. This is shown by way of example in the right part of the first line grid 7. Here is the value "5" to see.
  • the second line grid 8 shows no modulation in the region of the image 12. It is used exclusively for disguising the introduced in the first line grid 7 information. In view of the front side 3, one recognizes the value "0" with a 45 ° grid assignment in a darker cross-grid environment.
  • the effect pigment layer 6 with the magnetically embossed second line grid structure 11 acts as an analyzer in the form of a decoding raster. He also has no gray tone modulation, but in the form of a recess a picture motif 14, here the image of a flower.
  • first line grid structure consisting of the first line grid 7 and second line grid 8
  • second line grid structure 11 acts as an analyzer on the back of the carrier by the body depth or thickness of Carrier to a shading effect.
  • the above line grid overlap.
  • the second raster structure produced on the rear side in the effect pigment layer 6 interacts as an analyzer with the front-side raster tilted by 90 ° thereto.
  • the information of the image 12 which can be seen in supervision disappears approximately and the view of the second information, in this case the image motif 14, is released.
  • the back line grid structure in the effect pigment layer 6 shifts with increasing tilting of the security element 2 / moving the magnetic element 10 in the transparency region of the image 12 and reduces its transparency. There is a partial darkening or darkening of the image 12.
  • the production of the grid structures in the print pattern on the front side 3 is possible in a printing process. Alternatively, one can also first print a two-dimensional structure and then remove it again at the locations of the image 12 or the motif image 14.
  • the term "print motif" must therefore not be understood as limiting to simple printing processes, but also covers complex, multistage production processes.
  • the line grid structure 11 in the magnetic element 10 is predetermined by the manufacturing process of the magnetic element 10.
  • the described shading effects can also be achieved by implementing the line grid structure 11 serving as an analyzer as a cross-line grid. Even then, the cross-grid grid magnetically generated in the effect pigment layer 6 shifts visually in the direction of the line modulation of the first line grid 7 or of the second line grid 8 as the magnetic element 10 moves and reduces its transparency, resulting in a partial darkening. This dark zone can optionally be used for the introduction of further information.
  • first layer 19 in which, for example, the first line grid structure 5, comprising the line grids 7 and 8, is arranged, as well as the second layer 20 with the effect pigment layer 6, in which under the action of the magnetic element 10, the second line grid structure 11 is generated .
  • the spacing of these structures can be achieved particularly easily if a multi-layer composite is used as the carrier used, which is composed of a sequence of paper and plastic film layers and has an inner paper or plastic film layer.
  • the carrier used which is composed of a sequence of paper and plastic film layers and has an inner paper or plastic film layer.
  • FIGS. 7 to 10 For such a carrier, different attachment possibilities of the first layer 19 provided with the print pattern and the second layer 20 provided with the effect pigment layer 6 are illustrated.
  • the carrier has for example two outer plastic film layers 15 and 17 and an inner paper layer 16. This has a hole 18. In the region of this hole, the first layer 19 and the second layer 20 are mounted, so that the advantageous transparency of the carrier between the layers 19 and 20 is given.
  • the hole 18 can optionally be filled with adhesive.
  • the layers 19 and 20 are on the outsides of the outer plastic films 15 and 17.
  • the layers 19 and 20 are applied on either side of one of the outer layers, in this case the plastic film 17.
  • Both layers 19 and 20 are provided on the insides of the outer layers 15 and 17.
  • one layer in this case layer 20
  • the other layer in this case layer 19
  • the positions of the first layer 19 and the second layer 20 are arbitrarily changed.
  • Figure 10a shows by way of example a sectional view through a security element 2, in which first layer 19 and second layer 20 are formed on one and the same side of a paper carrier 16.
  • the effect pigment layer 6, which is arranged in the second layer 20 lies under the first layer 19, which contains the static print pattern 5.
  • the static print pattern is not designed as a line grid, but was won, in which the image to be displayed was rasterized and the resulting overall raster image was split into two parts. One part is the static printing pattern 5 which realizes another part in the magnetic element 2 (not shown).
  • this interaction according to version 3 of the aforementioned variants is not on the design of the Fig. 10a limited.
  • the base 21 is preferably made of a dark paint, particularly preferably with a light reference value of 0.5 and less, more preferably of less than 0.2.
  • Fig. 11b shows a comparison with the construction of the Fig. 10a Inverted layer sequence of first layer 19 and second layer 20.
  • the static printing pattern 5 was first applied.
  • the gaps in this print pattern were filled by a transparent filler 22 and then the effect pigment layer 6 was applied over it.
  • suitable printing methods come into question in particular offset printing method, gravure printing method, ink jet printing method, laser printing method, etc.
  • the printing of the line grid can also be executed in color, in particular for the line grid structure 5 and / or 8 different colors can be used for the first line grid 7 and the second line grid.
  • the security system according to the invention can also be combined with other security features in order to achieve a higher protection against copying or copying.
  • the static print pattern in the first layer 19 on the front side 3 and the magnetic element 10 respectively provide raster structures which together form a moiré overlay. In this way, a simple rotation of the magnetic element 10 relative to the security element 2 leads to image formation.
  • a cotton-vellum substrate is screen printed, screenprinted, flexo-printed, gravure printed or stitch printed with microencapsulated, reversibly magnetically orientable magnetic pigments.
  • the magnetic pigments e.g. gold
  • a binder e.g. a UV-curable, free-radical, aqueous or solvent-based binder.
  • the magnetically influenceable effect pigment layer 6 is printed in a structured manner using a visually and / or IR-visible printing ink in the screen, flexo, gravure, or offset printing process.
  • the static printing pattern for example, the line grid 5 is formed. This structure can not be influenced magnetically.
  • the hue and color intensity of the effect pigment layer 6 and the printing pattern are preferably comparable or similar, since this enhances the perceptible effect.
  • a comparable one Gloss is present in both layers, since then the individual information of the two layers are equivalent.
  • the print pattern is applied directly to the effect pigment layer 6 by means of an application method (e.g., by a cold or heat seal method).
  • the static print pattern 5 in the first layer 19 can also be made on the basis of metallic structures (e.g., aluminum, chrome, copper, etc. with and without additional diffractive substructure and with and without optically variable coating or colored metallic structure) or non-metallic structures.
  • the effect pigment layer 6 is applied to the carrier by means of a film element, a lacquer layer or a transfer element, and then the static print pattern is printed.
  • both the effect pigment layer 6 and the static print pattern are produced on a transfer element and this is then applied to the support of the security element 2.
  • the static print pattern and / or the effect pigment layer at least partially contains additional features with regard to luminescence, magnetic properties (for the static print layer) and / or IR properties. Also it is possible that one of the both layers deliberately differs in gloss from the other layer or has optically variable properties.
  • the magnetic element is attached to another area of a value document as the security element. By folding or folding then the verification can be done.
  • the effect pigment layer 6 can lie in a layer structure above or below the static print pattern. With regard to the recognizability, it is preferable to arrange the static printing pattern over the effect pigment layer in the viewing direction.
  • the topmost layer e.g., the static print layer
  • the topmost layer in top view is additionally printed with a preferably transparent interference layer so that the interaction of the static printed layer and effect pigment layer screen structures has an optically variable effect.
  • a contrast-enhancing, surface-applied coating under the layer structure.
  • This can be, for example, a dark color with a lightness value below 0.5, for example in black, dark blue, dark green, dark brown etc. (cf. 11A ).
  • the rotary screen printing is suitable.
  • radically UV-crosslinking inks without volatile constituents can be used.
  • radically or cationically UV-curing inks are possible.
  • Water-dispersion paints or systems of solvent / UV inks or water / UV inks Another possible printing method is the flat screen printing.
  • the colors mentioned in connection with rotary screen printing can also be used here. The same applies to flexographic printing.
  • the static print pattern in the first layer 19 can also be applied by flexo printing or screen printing.
  • offset printing, indirect high-pressure, high-pressure or inkjet printing technology is possible.
  • the distance between the first layer 19 and the second layer 20 is utilized for a shading effect, this feature is not essential for the realization of the invention.
  • the shading effect can be achieved just as well independently of the distance between the first layer 19 and the second layer 20 by moving the magnetic element 10 under the effect pigment layer 6.
  • the displacement position between the raster structure 11, which is generated in a magnetic manner in the effect pigment layer 6, and the raster structure 5 of the static pressure pattern can be adjusted, irrespective of the thickness of the support of the security element 2.

Landscapes

  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
EP13005419.0A 2012-12-07 2013-11-18 Système de sécurité pour papiers de sécurité, documents de valeur ou analogues Not-in-force EP2740607B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012222583.8A DE102012222583A1 (de) 2012-12-07 2012-12-07 Sicherheitssystem für Sicherheitspapiere, Wertdokumente oder dergleichen

Publications (2)

Publication Number Publication Date
EP2740607A1 true EP2740607A1 (fr) 2014-06-11
EP2740607B1 EP2740607B1 (fr) 2015-09-02

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EP (1) EP2740607B1 (fr)
DE (1) DE102012222583A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108883652A (zh) * 2015-12-29 2018-11-23 欧贝特信托公司 包含组合图像和/或显示光栅的安全物品
CN109070619A (zh) * 2015-12-29 2018-12-21 欧贝特信托公司 包含显示光栅和组合图像的安全物品
CN111554177A (zh) * 2020-06-12 2020-08-18 山东泰宝信息科技集团有限公司 点光源识读激光加密防伪吊牌及其制备方法
US10780728B2 (en) 2015-12-29 2020-09-22 Oberthur Fiduciaire Sas Secure article comprising a combined image and/or a revelation screen

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DE102004007379B3 (de) 2004-02-16 2005-09-01 Ovd Kinegram Ag Wertgegenstand mit Moiré-Muster
US6997482B2 (en) 2001-09-07 2006-02-14 Kba-Giori S.A. Control element for printed matters
EP1845496A1 (fr) 2006-04-12 2007-10-17 Trüb AG Elément de sécurité pour un support de données, support de données pourvu d'un tel élément de sécurité, semi-produit destiné à la fabrication d'un support de données tout comme procédé destiné à la fabrication d'un support de données
WO2007115656A2 (fr) 2006-04-05 2007-10-18 Giesecke & Devrient Gmbh Élément de sécurité
EP1886827A1 (fr) 2006-08-11 2008-02-13 National Bank of Belgium Image cachée
DE102006061905A1 (de) 2006-12-28 2008-07-03 Zintzmeyer, Jörg Sicherheitselement
WO2009074284A2 (fr) 2007-12-11 2009-06-18 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable
WO2010139427A1 (fr) 2009-06-05 2010-12-09 Giesecke & Devrient Gmbh Élément de sécurité comprenant un fluide magnétique
WO2010142553A1 (fr) 2009-06-10 2010-12-16 Giesecke & Devrient Gmbh Marque de sécurité et procédé de réalisation d'une marque de sécurité
WO2010142391A1 (fr) 2009-06-10 2010-12-16 Giesecke & Devrient Gmbh Élément de sécurité comprenant un fluide magnétique
EP2384898A1 (fr) 2010-05-06 2011-11-09 Giesecke & Devrient GmbH Elément de sécurité pour papiers de sécurité, documents de valeur ou analogues
EP2384989A2 (fr) 2008-05-28 2011-11-09 IFCO Systems Austria GmbH Verrou pour récipients de transport dotés de parois latérales pliantes
WO2012130370A1 (fr) 2011-04-01 2012-10-04 Giesecke & Devrient Gmbh Élément de sécurité variable optiquement doté d'une couche de couleur variable optiquement

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EP0967091A1 (fr) 1998-06-26 1999-12-29 Alusuisse Technology & Management AG Objet ayant un effet optique
EP1089883B1 (fr) 1998-06-26 2002-11-27 Alcan Technology & Management AG Objet avec effet optique
US6997482B2 (en) 2001-09-07 2006-02-14 Kba-Giori S.A. Control element for printed matters
DE102004007379B3 (de) 2004-02-16 2005-09-01 Ovd Kinegram Ag Wertgegenstand mit Moiré-Muster
WO2007115656A2 (fr) 2006-04-05 2007-10-18 Giesecke & Devrient Gmbh Élément de sécurité
EP1845496A1 (fr) 2006-04-12 2007-10-17 Trüb AG Elément de sécurité pour un support de données, support de données pourvu d'un tel élément de sécurité, semi-produit destiné à la fabrication d'un support de données tout comme procédé destiné à la fabrication d'un support de données
EP1886827A1 (fr) 2006-08-11 2008-02-13 National Bank of Belgium Image cachée
DE102006061905A1 (de) 2006-12-28 2008-07-03 Zintzmeyer, Jörg Sicherheitselement
WO2009074284A2 (fr) 2007-12-11 2009-06-18 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable
EP2384989A2 (fr) 2008-05-28 2011-11-09 IFCO Systems Austria GmbH Verrou pour récipients de transport dotés de parois latérales pliantes
WO2010139427A1 (fr) 2009-06-05 2010-12-09 Giesecke & Devrient Gmbh Élément de sécurité comprenant un fluide magnétique
WO2010142553A1 (fr) 2009-06-10 2010-12-16 Giesecke & Devrient Gmbh Marque de sécurité et procédé de réalisation d'une marque de sécurité
WO2010142391A1 (fr) 2009-06-10 2010-12-16 Giesecke & Devrient Gmbh Élément de sécurité comprenant un fluide magnétique
EP2384898A1 (fr) 2010-05-06 2011-11-09 Giesecke & Devrient GmbH Elément de sécurité pour papiers de sécurité, documents de valeur ou analogues
WO2012130370A1 (fr) 2011-04-01 2012-10-04 Giesecke & Devrient Gmbh Élément de sécurité variable optiquement doté d'une couche de couleur variable optiquement

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108883652A (zh) * 2015-12-29 2018-11-23 欧贝特信托公司 包含组合图像和/或显示光栅的安全物品
CN109070619A (zh) * 2015-12-29 2018-12-21 欧贝特信托公司 包含显示光栅和组合图像的安全物品
US10710394B2 (en) 2015-12-29 2020-07-14 Oberthur Fiduciaire Sas Secure item comprising a revealing screen and a combined image
US10730336B2 (en) 2015-12-29 2020-08-04 Oberthur Fiduciarie Sas Secure item comprising a combined image and/or a revealing screen
US10780728B2 (en) 2015-12-29 2020-09-22 Oberthur Fiduciaire Sas Secure article comprising a combined image and/or a revelation screen
CN108883652B (zh) * 2015-12-29 2021-01-05 欧贝特信托公司 包含组合图像和/或显示光栅的安全物品
CN111554177A (zh) * 2020-06-12 2020-08-18 山东泰宝信息科技集团有限公司 点光源识读激光加密防伪吊牌及其制备方法

Also Published As

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EP2740607B1 (fr) 2015-09-02

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