WO2018210446A1 - Procédé pour protéger un produit partiel et système comprenant un produit partiel protégé - Google Patents

Procédé pour protéger un produit partiel et système comprenant un produit partiel protégé Download PDF

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Publication number
WO2018210446A1
WO2018210446A1 PCT/EP2018/000254 EP2018000254W WO2018210446A1 WO 2018210446 A1 WO2018210446 A1 WO 2018210446A1 EP 2018000254 W EP2018000254 W EP 2018000254W WO 2018210446 A1 WO2018210446 A1 WO 2018210446A1
Authority
WO
WIPO (PCT)
Prior art keywords
product
alienation
key
alienated
embossed structure
Prior art date
Application number
PCT/EP2018/000254
Other languages
German (de)
English (en)
Inventor
Martin Imhof
Peter Franz
Original Assignee
Giesecke+Devrient Currency Technology 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+Devrient Currency Technology Gmbh filed Critical Giesecke+Devrient Currency Technology Gmbh
Priority to EP18726050.0A priority Critical patent/EP3625059B1/fr
Publication of WO2018210446A1 publication Critical patent/WO2018210446A1/fr

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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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/26—Entrance cards; Admission tickets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/342—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
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing

Definitions

  • the invention relates generally to the protection of a partial product used in the manufacture of security elements, and more particularly relates to a method of securing a partial product which, in cooperation with a supplemental product, produces a predetermined visually apparent effect against unauthorized use of the partial product.
  • the invention also relates to an associated system of a secured against unauthorized use partial product and a supplement product, which generates a predetermined visually visible effect in cooperation with the hedged partial product.
  • Data carriers such as value or identity documents, but also other valuables, such as branded goods, are often provided with security elements for the purpose of protection.
  • Security elements often serve to verify the authenticity of the data carrier (or product) and can also be used to protect against unauthorized reproduction.
  • the present invention seeks to protect sub-products of the type mentioned against unauthorized use.
  • the partial products may either form part of a combined security element or may be a tool for producing a component of such a combined security element. Examples of such tools are forming tools, such as embossing tools, casting molds or the like, or printing tools, such as printing plates or printing masks.
  • forming tools such as embossing tools, casting molds or the like
  • printing tools such as printing plates or printing masks.
  • Alienation key alienates so that the alienated sub-product, in cooperation with the alienated supplement product, produces the predetermined visually-apparent effect, and does not produce the predetermined visually-apparent effect in cooperation with an unaltered supplemental product or a supplement alienated with another encoding alienation key.
  • the sub-product to be protected provides an embossed structure having a plurality of raster elements, and the supplement product changes the embossed surface of the embossed structure in its reflective behavior.
  • the alienated partial product according to the invention in cooperation with the supplementary product alienated according to the invention, produces the same predetermined visually visible effect as the unaltered partial product in cooperation with the unaltered supplementary product.
  • the alienated partial product is protected against unauthorized use, since it can only be used together with a (alienated by the manufacturer) supplementary product.
  • the predetermined visually apparent Effect not generated.
  • no motion effect is generated at all, in particular no pumping or rotation effect, or even no coherent perceptible, visual effect generated.
  • the predetermined visually visible effect is preferably exhibited when tilting and / or rotating the security element.
  • the predetermined visually visible is preferably a tilting effect or a moving effect (with constant or (linearly increasing) speed in smooth tilting or turning).
  • different partial areas may be provided, which differ in their movement, that is to say they differ, for example, in the direction of movement (for example, are opposite or orthogonal) and / or proceed at different speeds.
  • Different sections are particularly conspicuous to the viewer, so that they can be easily recognized or verified when tilting or turning the security element.
  • a change in the reflection behavior comprises, in particular, visually perceptible color changes, but also includes an additional or alternative intensity change of the reflection, for example a reflection-increasing or reflection-reducing change.
  • the encoding / alienation key associated with the decoding alienation key is only known to the manufacturer, only that manufacturer can create appropriate supplemental products to the secured subproduct or, for example, for a fee, provide a user with information for producing a matching supplemental product.
  • the specific encoding alienation key and the associated decoding alienation key are selected customer-specific or batch-specific.
  • the partial product to be protected is a foil having a relief (or embossing) structure of a multiplicity of relief elements, in particular with a regular arrangement of raster elements.
  • the sub-product to be protected is an embossing tool for embossing an embossed structure of a multiplicity of raster elements, in particular with a regular arrangement of the raster elements.
  • the raster elements are formed by a blind embossing, for example by intaglio printing, by embossing or embossing or are provided by a film with a micromirror arrangement.
  • the supplement product is advantageously produced by a different production process than the partial product.
  • the partial product may be an embossed structure and the supplementary product may be a printed image.
  • the supplementary product is preferably a coating following the embossed surface of the embossed structure, in particular in the form of an imprint.
  • a reflection-enhancing layer is provided in addition to the coating, which follows the embossed surface of the embossed structure.
  • the coating and / or the reflection-enhancing layer follows the embossed structure with at least one surface, preferably it has a constant layer thickness or follows it with both surfaces of the embossed structure.
  • the supplementary product is a printed image, which is produced by a printing process, in particular dry / wet offset printing, intaglio or inkjet printing, or a lasered image, which is generated by means of laser radiation, for example in a radiation-sensitive embossed layer.
  • the supplement product is preferably produced using a data-based imaging method, thus in particular also allowing a personalization of the image (or effect).
  • a data record required for the production of the supplementary product eg encoding alienation key or alienated print or laser image
  • a specific (symmetrical or asymmetrical) distortion of the position of the raster elements or the position of the embossed structures for embossing the raster elements is changed by the distortion starting from the grid, the shape of the grid element (such as round knob, polygon, ...) remains preferably unchanged.
  • a positional distortion of the grid elements is less than half the grid width.
  • the distortion of the shape of the grid element can be changed (outer contour of the grid element is distorted, for example, the round knob is oval, a square element rectangular or trapezoidal ).
  • the distortion may be axis or point symmetric, but is preferably asymmetric. In particular, asymmetric distortion of the grid may vary locally.
  • a specific alienation of specific individual raster elements or of specific individual embossed structures for embossing the raster elements can be selected. Accordingly, the position of the alienated raster elements can be be changed, so correspond to the original grid.
  • the raster element can be alienated by at least one of the following parameters: angular position change to the recurring raster (inclination angle and / or azimuth angle), shape distortion (such as oval instead of round raster element area) or shape change (such as local flattening on a round raster element area), surface modification (such as change the transmission or reflection properties). For each of the parameters, an intensity of the alienation can be specified.
  • the nature and / or the intensity of an alienation is determined individually for each raster element.
  • the alienation can be determined locally for the raster element, for example randomly, according to a quasi-random principle or deterministically, in particular by applying a derivation rule applicable to all raster elements (eg alienation rule applied to raster element position).
  • Another alternative for alienation of individual grid elements may also be a position exchange. If mutually distinguishable grid elements are arranged in the grid according to a rule, they can be alienated by a position exchange.
  • the grid may, for example, consist of a recurring pattern within which a plurality of different grid elements are arranged. For example, five times five grid elements each with an angle position (inclination angle and / or azimuth angle of the particular square reflector surface) predetermined for the position in the pattern form the pattern. In the grid, a large number of these patterns lie side by side.
  • the patterns can also be considered as pixels. As alienation positions are exchanged in all patterns, in a subarea with patterns or in certain patterns.
  • the position is changed in each grid differently.
  • a sector-specific raster is selected as the decoding alienation key.
  • Several areas have different, area-specific rasters. There are at least two, preferably at least three different area-specific rasters. Area-wise different position or shape distortions, as already described above, are possible but may be unnecessary in their complexity. It is already sufficient and therefore particularly advantageous, for example, to select a region-specific grid spacing and / or a region-specific distance between the grid elements.
  • the multiple areas will usually be patterned, so for example, mosaic or checkerboard (rectangle or square).
  • motif borders in the visual effect can be selected as the area boundaries of the several areas, since the area boundaries will not be noticeable or less noticeable even if perfect registration is not achieved.
  • two areas are provided, (only) a motif area (motif grid with first raster width rl), in particular by the motif given edge contour, and a surrounding area (environmental raster with r2 raster).
  • the surrounding area can optionally comprise pattern-specific areas with area-specific raster (motif with a r1 rogram is surrounded by mus terförmig arranged (more than four) areas with at least two other r21 r21 and r22).
  • the specific encoding alienation key defines a corresponding alienation of the supplemental product, so that in the interaction of the two alienated products, the effects of the two alienations just cancel and the desired predetermined visually visible effect is generated.
  • the decoding alienation key defines a deformation of the sub-product in the form of a free-form surface, a periodic or aperiodic wave or a 3D element, which can also be applied additively in a partial area or to the entire visual image information.
  • a movement effect in particular a non-linear movement effect, a pumping or rotation effect is produced with particular advantage.
  • an image is expediently displayed and optionally moved, wherein the image may be a logo, a lettering, a graphic, a color play of different color gradients or a color change of a displayed graphic.
  • the alienation of the supplementary product and of the sub-product to be protected may in each case comprise the entire product, for example the entire area of an embossed structure or a printed image, or even only a partial area of the product, that is to say for example only a partial area of the embossed structure or the printed image.
  • the alienated partial area preferably takes more than 30%, in particular more than 50%, preferably between 31% and 100% or between 31% and 95%, more preferably between 51% and 100%, 51% and 95% or 71% and 95% of the total area of the product.
  • a non-alienated surface with the predetermined visual effect and an alienated surface without the predetermined visual effect increase the visibility of the hedge for the viewer, he sees in particular immediately what effect is missing in the alienated surface.
  • the area fraction of the unaltered partial area of the product on the total area of the product is less than 50%, preferably between 5% to 30%, in particular between 10% and 20%.
  • the intensity of the alienation may vary in certain regions, for example the degree of distortion of the raster or the area density of the changes of individual raster elements.
  • at least one further partial surface may be provided in which the predetermined visual effect is less pronounced.
  • the further partial surface lies in a first variant between the alienated and the non-alienated partial surface. It thus forms a transition in which the intensity of the alienation to the alienated partial surface increases optionally.
  • subareas of different degrees of alienation are arranged next to one another.
  • the invention also includes a system of a partial product secured against unauthorized use and a supplemental product which, in cooperation with the protected partial product, produces a predetermined visually apparent effect.
  • the supplemental product is alienated with a specific encoding alienation key
  • the hedged subproduct is alienated with an associated decoding alienation key, such that the alienated subproduct, in cooperation with the alienated supplemental product, produces the predetermined visually apparent effect, and in conjunction with one unrelated supplement or a supplemental product alienated with another encoding alienation key does not produce the predetermined visually apparent effect.
  • the sub-product to be protected provides an embossed structure with a multiplicity of raster elements and the supplementary product alters the embossed surface of the embossed structure in its reflection behavior.
  • the hedged partial product is a film having a relief structure, in particular an embossed structure, of a multiplicity of raster elements, in particular with a regular arrangement of the raster elements.
  • Irregularly arranged raster elements such as quasi-randomly distributed planar micromirrors, are also theoretically conceivable, but less suitable, since the complexity of alienation becomes high.
  • the hedged sub-product is an embossing tool for embossing an embossed structure of a plurality of raster elements, in particular with a regular arrangement of the raster elements.
  • the raster elements can be formed by a film with (embossed) relief formed on only one surface, for example an embossing lacquer layer or a polymer layer.
  • the grid elements are arranged as a relief structure on one of the two structured surfaces of the film, for example by means of embossing on a front side.
  • the raster elements can initially be transparent; be formed semi-transparent reflective or opaque reflective, for example, by being uncoated or coated with a metal layer or HRI layer.
  • the grating elements are locally changed in their reflection behavior.
  • first transparent grid elements are either full-surface semitransparent reflective or opaque reflective and also designed locally color or locally designed semi-transparent color reflective or opaque color reflective.
  • raster elements serve correspondingly for example as micromirrors or absorbers or filters.
  • a substructuring of the raster elements, for example as a Fresnel mirror or blazed mirror is conceivable.
  • the raster elements are of particular advantage by - nub-shaped, line-shaped or polygonal -
  • the supplementary product is a printed image in advantageous embodiments.
  • the printed image can in particular be combined as a separate printed image with an embossed structure of the abovementioned type, or printed as an integral printed image on an embossed structure of the abovementioned type.
  • the partial product and the supplemental product are firmly connected to each other and thereby together form a security element, as described in more detail below.
  • Sub-product and supplementary product are present on the same unit, a final product such as value document, branded article or the like.
  • the invention also provides a security element made of a partial product secured against unauthorized use and a supplementary product which, in cooperation with the protected partial product, produces a predetermined visually visible effect.
  • the supplemental product is alienated with a specific encoding alienation key
  • the hedged subproduct is alienated with an associated decoding alienation key such that the alienated subproduct, in cooperation with the alienated supplemental product, produces the predetermined visually apparent effect.
  • the hedged sub-product is a film having an embossed structure of a plurality of raster elements, in particular with a regular arrangement of the raster elements, and the supplementary product is a printed image.
  • the printed image can be combined in particular as a separate print image with the embossed structure, or printed on the embossed structure as an integral print image.
  • the partial product can also be formed by an embossed structure of a packaging, for example an injection-molded packaging.
  • the embossing structure can be produced, for example, by an injection molding tool or a heat-sealing stamp, which deforms a thermoplastic and thereby produces a desired surface relief.
  • the supplement can, for example, be printed shrink film may be formed, which is drawn over the embossed structure or deep drawn in the mold.
  • the partial product can also be formed by a tactile point or line-like pressure layer.
  • a tactile point or line-like pressure layer can be used in particular in the packaging area with advantage.
  • Security features are commonly used to enable authentication and / or provide copy protection. However, in the present context it is also conceivable to provide the security element merely as a visually particularly attractive design element.
  • FIG. 1 is a schematic representation of a high-quality ticket with an optically variable security element with a conspicuous rotational effect when tilting the card
  • Fig. 2 is a schematic illustration of the interaction of a
  • FIG. 3 shows in a representation as in FIG. 2, in (a) the interaction of embossing structure and printed image after alienation of both elements for a first user, in (b) schematically the interaction of embossing structure and printed image after alienation of both elements for a second users,
  • FIG. 1 shows a schematic representation of a high-quality admission ticket 10, which is provided with a visually variable security element 20 in addition to a serial number 12 and conventional content information 14 for authenticity assurance.
  • the security element 20 has a shiny metallic appearance with an additional colored, windmill-like wing structure 22.
  • a small tilting of the card 10 generates a visually conspicuous apparent rotational movement 24 of the colored wings 22. If the card 10 is tilted, the colored wings 22 move in a circular manner to the left or right depending on the direction of tilt, so that the rotational movement for the observer 24 arises.
  • the conspicuous rotational effect arises from the interaction of an embossing pattern 30 of a square grid of a plurality of embossing elements 32 with a print image 40 having a background layer 42 and a line grid contrasting therewith from a plurality of approximately, but not completely parallel lines 44.
  • the security element 20 is created by the combination of the two components embossed structure 30 and printed image 40 on the ticket 10.
  • the embossed structure 30 represents a partial product of the finished security element 20, which is produced independently of the printed image 40 and with another production method, and which according to the invention is intended to be protected against unauthorized use. Alternatively, you can An embossing tool for embossing the embossed structure 30 can be secured accordingly.
  • the separately produced print image 40 is alienated with the specific encoding alienation key, and the embossed structure 30 or the embossing tool to be protected is alienated with the associated decoding alienation key.
  • FIG. 3 (a) and 3 (b) illustrates.
  • a first custom encoding alienation key ESI and an associated decoding alienation key DS1 are generated, wherein in FIG. 3 (a) a specific asymmetrical distortion of the raster elements or the lines is chosen for illustration.
  • the printed image 40 is alienated with the specific first encoding alienation key so that a first alienated print image 40-1 is formed with lines 44-1 that are distorted according to the encoding alienation key ESI.
  • the embossed structure 30 to be protected is alienated with the associated decoding alienation key DS1 so that a first alienated embossed pattern 30-1 is formed with embossed elements 32-1 that are distorted according to the decoding alienation key DS1.
  • the two alienation keys DS1 and ESI are coordinated so that the alienated embossed structure 30-1 in the finished security element 20-1 in cooperation with the alienated print image 40-1 as well as the unaltered embossed structure 30 in cooperation with the unaltered print image 40th the predetermined visually visible effect, namely the apparent rotational movement 24 of the colored wings 22 generated.
  • a second custom encoding alienation key ES2 and an associated decoding alienation key DS2 are generated, with another specific asymmetrical distortion of the raster elements or lines chosen for illustration in FIG. 3 (b).
  • the print image 40 is alienated with the specific second encoding alienation key so that a second alienated print image 40-2 is formed with lines 44-2 that are distorted according to the encoding alienation key ES2.
  • the embossed structure 30 to be protected is alienated with the associated decoding alienation key DS2, so that a second alienated embossed structure 30-2 is formed with embossed elements 32-2 that are distorted according to the decoding alienation key DS2.
  • the two alienation keys DS2 and ES2 are coordinated so that the alienated embossed structure 30-2 in the finished security element 20-2 in cooperation with the alienated print image 40-2 as well as the unaltered embossed structure 30 in cooperation with the unaltered print image 40 the predetermined visually visible Effect, namely the apparent rotational movement 24 of the colored wings 22 generated.
  • the embossing structure 30-1 of the first user alienated with the decoding alienation key DS1 is used combined with the unaltered print image 40, as illustrated in FIG. 3 (c)
  • the predetermined visually apparent effect does not arise because the distortion of the embossed pattern 30-1 described by the decoding alienation key DS1 does not compensate for a corresponding distortion of the print image 40 becomes.
  • the combination of the two components 30-1 and 40 shows a disordered, randomly appearing pixel pattern 26.
  • Print image 40-2 is compensated. Rather, the different distortion of the print image 40-2 described by the encoding alienation key ES2 together with the embossed structure 30-1 produces, for example, a disordered, randomly appearing pixel pattern 26 '.
  • the predetermined visual effect is not shown in the same way if the embossing structure 30-2 of the user K 2 alienated with the decoding alienation key DS2 merges with the unaltered print image 40, or with a print image that matches an unsuitable En - Coding alienation key is alienated, is combined.
  • the alienated embossed structures 30-1 and 30-2 are thus effectively protected against unauthorized use.
  • the embossing structures 30-1 of the user Ki can only be used together with a printed image 40-1 which is correspondingly distorted by the manufacturer, but not with other printed images 40, 40-2 which are either not alienated or alienated with another key. Therefore, users can not exchange or create print images without the manufacturer's knowledge and approval.
  • the decoding alienation key and the encoding alienation key are known only to the manufacturer, but not the users, so that only the manufacturer can produce or produce suitable alienated printed images.
  • the secured partial product may, for example, also be present in an embossing tool that is set up for embossing an embossed structure 30-1 or 30-2, instead of in the embossed structure.
  • the alienation of the embossing tool effectively prevents unauthorized use, since the embossing structures 30-1 produced by a user Ki with the aid of the embossing tool only cooperate with a printed image 40-1 alienated by the manufacturer, but not with other printed images 40, 40 -2, can be used.
  • the manufacturer can, for example, provide a user with a stamping tool modified in the manner described above and a data record for a correspondingly alienated print image "print image 10", with which the user can generate a security element customized for banknotes of the value 10 within a banknote series. If the user later also wants to generate security elements that are individualized for banknotes of the value 50, he can use the same embossing tool, but requires from the production of another record for the associated print image "print image 50". The user thus saves the purchase of several different embossing tools for the two value variants, while the manufacturer at the same time ensures that the delivered embossing tool can only be used for the authorized by him uses.
  • a distortion of the embossed structure 30 or of the printed image 40 can be selected as specific alienation.
  • rv is the location of a point in the distorted (recorded) image
  • ro indicates the location of the same point in the undistorted image.
  • the internal coordinates rv and ro are related to half the value of the smaller image size (height or width).
  • the parameter set (a, b, c, d) characterizing a specific distortion can then be used as a decoding or encoding alienation key, which is chosen, for example, to be signature-specific or batch-specific.
  • the alienation may also be in a vortex distortion, such as a pixel in the middle of the undistorted representation.
  • the vortex distortions are also possible in partial image sections, wherein different partial image sections may have the same or opposite course.
  • the alienation is an alienation pattern that can be repeated for the entire raster.
  • an angular position change to the raster angle of inclination and / or azimuth angle
  • a changed reflection behavior reflective, matt and / or transparent
  • non-global alienations are also considered, in which, for example, certain individual image elements (raster elements or lines) ensegmente) are alienated in the same or different ways. Whether a raster element is possibly alienated in which form, can be determined individually for each raster element. For example, a cryptographic operation using a key (a token or batch specific value) applied to a seed associated with the rasterizer may provide a result indicating the alienation.
  • the result can encode, for example, in a first bit, if the raster element is alienated, in at least one type bit the type of alienation, such as position change in the raster, angular position change to the grid (inclination angle and / or azimuth angle), relief shape distortion (such as oval instead round raster element surface) or relief shape change (such as local flattening of a round raster element surface) and encode the intensity of the alienation in an optional, at least one further intensity bit.
  • the type of alienation such as position change in the raster, angular position change to the grid (inclination angle and / or azimuth angle), relief shape distortion (such as oval instead round raster element surface) or relief shape change (such as local flattening of a round raster element surface) and encode the intensity of the alienation in an optional, at least one further intensity bit.

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

L'invention concerne un procédé pour protéger un produit partiel (30), lequel génère en coopération avec un produit complémentaire (40) un effet visuellement perceptible prédéfini (24), contre une utilisation non autorisée du produit partiel (30). Selon le procédé, une clé de retouche par codage (ESI) spécifique et une clé de retouche par décodage (DSl) associée sont générées, le produit complémentaire (40) est retouché au moyen de la clé de retouche à codage (ESI) spécifique, et le produit partiel (30) à protéger est retouché au moyen de la clé de retouche à décodage (DSl) associée, de sorte que le produit partiel (30-1) retouché génère en coopération avec le produit complémentaire (40-1) retouché l'effet visuellement perceptible prédéfini (24), et, en coopération avec un produit complémentaire (40) non retouché ou un produit complémentaire (40-2) retouché au moyen d'une autre clé de retouche à codage, ne génère pas l'effet visuellement perceptible prédéfini. Le produit partiel à protéger fournit une structure en relief pourvue d'une pluralité d'éléments de grille et le produit complémentaire modifie le comportement de réflexion de la surface estampée de la structure en relief.
PCT/EP2018/000254 2017-05-16 2018-05-11 Procédé pour protéger un produit partiel et système comprenant un produit partiel protégé WO2018210446A1 (fr)

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EP18726050.0A EP3625059B1 (fr) 2017-05-16 2018-05-11 Procédé pour protéger un produit partiel et système comprenant un produit partiel protégé

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DE102017004682.4A DE102017004682A1 (de) 2017-05-16 2017-05-16 Verfahren zur Absicherung eines Teilprodukts und System mit einem abgesicherten Teilprodukt
DE102017004682.4 2017-05-16

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DE102021004132A1 (de) 2021-08-11 2023-02-16 Giesecke+Devrient Mobile Security Gmbh Sicherheitsmerkmal für einen Datenträger und Datenträger

Citations (5)

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WO2006018232A1 (fr) * 2004-08-13 2006-02-23 Giesecke & Devrient Gmbh Support de donnees ayant une structure optiquement variable
WO2009139396A1 (fr) * 2008-05-01 2009-11-19 独立行政法人 国立印刷局 Matériau de formation d’image, dispositif de détermination d’authenticité et procédé de détermination d’authenticité
JP2014162113A (ja) * 2013-02-26 2014-09-08 National Printing Bureau 立体表示形成体及びその作製方法
EP2889152A1 (fr) 2013-12-20 2015-07-01 Giesecke & Devrient GmbH Élément de sécurité destiné à représenter au moins une information variable optiquement
WO2016020066A2 (fr) 2014-12-12 2016-02-11 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable

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US7916343B2 (en) * 2003-07-07 2011-03-29 Commonwealth Scientific And Industrial Research Organisation Method of encoding a latent image and article produced
DE102004044458B4 (de) * 2004-09-15 2010-01-07 Ovd Kinegram Ag Sicherheitsdokument
US8351087B2 (en) * 2009-06-15 2013-01-08 Ecole Polytechnique Federale De Lausanne (Epfl) Authentication with built-in encryption by using moire parallax effects between fixed correlated s-random layers
DE102010012650A1 (de) * 2010-03-25 2011-09-29 Giesecke & Devrient Gmbh Datenträger mit Durchsichtsbereich
US10286716B2 (en) * 2015-10-27 2019-05-14 Ecole Polytechnique Fédérale Lausanne (EPFL) Synthesis of superposition shape images by light interacting with layers of lenslets

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
WO2006018232A1 (fr) * 2004-08-13 2006-02-23 Giesecke & Devrient Gmbh Support de donnees ayant une structure optiquement variable
WO2009139396A1 (fr) * 2008-05-01 2009-11-19 独立行政法人 国立印刷局 Matériau de formation d’image, dispositif de détermination d’authenticité et procédé de détermination d’authenticité
JP2014162113A (ja) * 2013-02-26 2014-09-08 National Printing Bureau 立体表示形成体及びその作製方法
EP2889152A1 (fr) 2013-12-20 2015-07-01 Giesecke & Devrient GmbH Élément de sécurité destiné à représenter au moins une information variable optiquement
WO2016020066A2 (fr) 2014-12-12 2016-02-11 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable

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DE102017004682A1 (de) 2018-11-22
EP3625059B1 (fr) 2021-07-07

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