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EP2173567B1 - Élément de sécurité présentant plusieurs structures optiquement variables - Google Patents

Élément de sécurité présentant plusieurs structures optiquement variables Download PDF

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Publication number
EP2173567B1
EP2173567B1 EP08785048A EP08785048A EP2173567B1 EP 2173567 B1 EP2173567 B1 EP 2173567B1 EP 08785048 A EP08785048 A EP 08785048A EP 08785048 A EP08785048 A EP 08785048A EP 2173567 B1 EP2173567 B1 EP 2173567B1
Authority
EP
European Patent Office
Prior art keywords
embossed
embossing
security element
coating
recesses
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.)
Active
Application number
EP08785048A
Other languages
German (de)
English (en)
Other versions
EP2173567A2 (fr
Inventor
Roger Adamczyk
Christoph Baldus
Peter Franz
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 EP2173567A2 publication Critical patent/EP2173567A2/fr
Application granted granted Critical
Publication of EP2173567B1 publication Critical patent/EP2173567B1/fr
Active legal-status Critical Current
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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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • 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
    • B42D2035/24—

Definitions

  • the invention relates to a security element with an optically variable structure, which has an embossed structure.
  • the embossed structure is combined with a coating contrasting with the surface of the security element in such a way that at least partial regions of the coating are visible when viewed from a first viewing angle range, but are obscured when viewed under a second viewing angle range.
  • a data carrier with an optically variable element which consists of an embossed structure and a coating in the form of a printed image or line screen.
  • the embossed structure or the coating are in this case supplemented by a partial change in their structure so that either an amplification of the already known optically variable effect occurs or at least one further visually recognizable effect occurs.
  • the optically variable element is visually recognizable, but can not be reproduced by means of copiers due to its optically variable properties. Copying devices can only reproduce a single viewing direction, so that the optically variable effect, ie the recognizability of different information under different viewing directions, is lost.
  • the known optically variable element can thus serve as copy protection.
  • an optically variable structure that consists of a coating and an embossed structure superimposed on this coating.
  • the entire area provided with coating and embossing is subdivided into partial areas in which either the coating or the embossing is uniformly varied for the entire area.
  • the other part is the same in all sub-areas, ie it has the same laws in all sub-areas.
  • Different subprints in the sense of WO 02/20280 A1 are, for example, when the partial embossing structures are arranged in the individual sub-regions out of phase with each other, have different screen widths or are oriented differently, ie the General Georgiage Cook at an angle to each other.
  • the partial embossing structures in the individual subregions can also be arranged offset to one another, the direction of progression of the embossed embossing structures remaining the same.
  • the invention has for its object to improve the known security elements and in particular to increase the protection against counterfeiting on.
  • the invention in this case comprises both a security element, a data carrier with a security element and an embossing tool for producing a security element.
  • the data carrier here is in particular a value document, such as a banknote, a security, a credit, Debit or ID card, a passport, a certificate and the like, a label, packaging or other item for product assurance.
  • the optically variable structure has at least one second embossing structure, which is arranged within the first embossing structure and, in addition to the first tilting effect, generates a second tilting effect.
  • the second tilting effect occurs either within the first or second viewing angle range of the first tilting effect or during the transition from the first to the second or from the second to the first viewing angle range of the first tilting effect.
  • the second embossing pattern is arranged on the first embossing pattern to be visible within the first or second viewing angle range and barely or not visible within the other viewing angle range.
  • An observer who views the security element according to the invention from the viewing angle range in which the second embossing structure is barely or not visible thus sees only the first embossed structure. From the other viewing angle range, however, the observer additionally sees the second embossing structure and, when the security element is tilted about a second axis, which is different from the first axis, the second tilting effect.
  • the at least one second embossing structure particularly preferably consists of second embossing elements, which are attached at a certain angle to a flank of the first embossing elements.
  • the second embossing elements thus protrude stubby with a certain angle from an edge of the first embossing elements and cause on this side of the first embossing elements the second tilting effect.
  • the angle at which the second embossing elements are attached to an edge of the first embossing elements in this case corresponds to the angle between the first axis of the first tilting effect and the second axis of the second tilting effect;
  • the first and second embossing structures are designed as raster structures and particularly preferably as line raster with constant raster width, with a cross-sectional area that is in particular triangular, trapezoidal, sinusoidal or semicircular, and preferably have the form of three-dimensional line / wave or similar structures, such as Reliefs, in a substrate.
  • the second embossed structures need not necessarily have the same cross-sectional area as the first embossed structures.
  • the first embossed structures may have a triangular cross-sectional area, whereas the cross-sectional area of the second embossing elements may be semicircular.
  • the at least one second embossing structure is introduced into the first embossing elements by a partial change in the geometry of the first embossing elements.
  • the first embossing elements preferably have a modulation of the height in the longitudinal or transverse direction, the width or the inclination of the flanks, wherein the modulation of the width or the inclination of the flanks can be carried out on one or both sides of a stamping element.
  • the second tilting effect occurs in the areas in which the second embossing structure is located, in addition to the first tilting effect.
  • the first embossing elements may consist of two flanks arranged in wedge-like manner, which have different colors, and the second embossing structure is designed as a cut-like indentation on the tip of the wedge in the longitudinal direction of the tip.
  • the flanks of the indentation in turn have a color that contrast with that of the adjacent flank of the first embossing elements.
  • first the first flank of the first embossing element When tilting about the first axis, a viewer thus sees first the first flank of the first embossing element and towards the end of the first viewing angle range additionally the first flank of the indentation, which runs parallel or nearly parallel to the first flank of the first embossing element.
  • the viewer Upon further tilting about the first axis, the viewer sees the second flanks of the first embossing element and the indentation until finally the first flank of the first embossing element and then the second flank of the indentation are concealed by the second flank of the first embossing element.
  • the first and second embossed structures are preferably designed as blind embossing.
  • Blind embossings are produced in a printing process using a steel gravure printing plate. During the printing process, the paper is pressed into the recesses of the blind embossing areas and in this way permanently deformed.
  • the blank embossing areas of the printing plate unlike printed image areas, are not filled with ink, so that the substrate material of the security document is only permanently deformed, ie embossed, in these areas.
  • blind embossing with corresponding dimensions can also be detected tactilely.
  • the blind embossing is also referred to as halftone blind embossing.
  • blind embossing can also be produced by means of thermal processes.
  • a substrate made of plastic is thermally deformed by the action of heat, with finer structures can be displayed than with paper substrate.
  • This method is used in particular for plastic banknotes or debit cards, debit cards, credit cards, SIM cards, customer cards or the like.
  • the first and second embossed structures are designed as an ink-carrying embossing.
  • the optically variable effect of the security element is retained, although an ink-bearing embossing is used instead of the blind embossing.
  • the optically variable structure has, at least in some areas, a second coating which also contrasts with the data carrier surface and which is arranged congruently with the raised regions of the embossed structure.
  • the second coating offers the advantage that the embossed structure is stabilized without additional printing.
  • the security element of this type has the advantage that it can be integrated into a gravure printing motif and thus into the color and representational design of a surrounding motif.
  • the engraving lines of the printing plate are filled with paint.
  • the excess color is using a Wiping cylinder or a doctor blade away from the pressure plate so that the engraving lines are filled to the edge with paint.
  • the data carrier to be printed as a rule paper
  • the disk is thereby pressed into the filled with color engraving lines of the printing plate and thus comes into contact with the ink.
  • the printed image produced in this way has printing lines which vary depending on the depth of the engraving in the ink layer thickness.
  • the disk is in this case pressed so strong into the wells of the printing plate that he not only receives the color from the wells, but is also coined.
  • the embossing structures have line-shaped embossing elements, which may preferably be straight, but also wavy and / or curved.
  • a line-shaped embossing element is produced by a channel-like recess in the embossing plate or the embossing cylinder.
  • the recess is designed in cross-section such that embossing elements are formed with at least two opposite flanks and each of these flanks is visible from different directions.
  • two flanks are created, which are both visible when viewed vertically. When viewed obliquely, only one flank is visible because the other flank is obscured by the opposite visible flank. When alternately vertical and oblique viewing thus creates a tilting effect.
  • the linear grid structure of the coating and the line-shaped embossing elements are aligned parallel to each other, so that on one flank of the embossed structure lines of one color and on the other flank lines of a different color are arranged. If a viewer thus looks at the optically variable structure at an angle, he sees one of the two colors depending on the viewing direction, he looks vertically at the optically variable structure, he sees both colors. The interaction of coating and embossed structure thus creates a tilting effect with a color change.
  • Non-linear embossing elements have flanks of planar and / or curved surfaces, in particular the shape of n-sided pyramids, tetrahedrons, truncated pyramids, cylindrical sections, cones, conic sections, paraboloids, polyhedra, cuboids, prism spherical cutouts, spherical sections, spherical segments, hemispheres, barrel bodies or tori ,
  • the non-linear embossing elements may also be formed as a so-called split torus, wherein the torus is divided parallel to the plane in which the large radius of the torus lies.
  • Non-linear embossing elements have the advantage that more than two pieces of information can be accommodated in the optically variable element in a simple manner, which are visible at different viewing angles, since the non-linear embossing elements have a plurality of flanks on which the information or parts of the information are targeted and can be arranged separately from each other.
  • the first and / or second embossing structures and / or the contrasting coating have at least one information that is formed by the contour lines of the embossed or printed areas.
  • This information is in the form of a graphic and / or alphanumeric image and represents, for example, a number, a letter, a portrait, an animal, a plant, a landscape or a building.
  • the height and / or lateral dimension of the embossed structures must be more than 30 ⁇ m, in particular because of the roughness of banknote paper.
  • the at least one second embossed structure is divided into individual subregions, wherein the second embossed structure acts as additional information.
  • This can, depending on the design, individual partial areas u.a. cover, highlight, matt or shadow. With the same arrangement, this has a clear information-supporting, by a rejuvenating or disharmonic arrangement, this may favor a tipping effect.
  • the coating is preferably carried out in the form of a flat single or multi-color print.
  • the multicolor print in this case particularly preferably consists of a line pattern in which the lines directly adjoin one another or are spaced from one another.
  • a blanket line pattern is preferably applied to the data carrier from an alternating sequence of three lines in the colors cyan, magenta and yellow.
  • the color of the substrate of the data carrier forms one of the lines of the line pattern.
  • Both options can also be combined. For example, if an alternating sequence of two contiguous lines in the colors cyan and yellow is printed on a magenta substrate, with a gap between each pair of lines, the substrate forms the "missing" third line of the sequence.
  • the lines of the individual colors are successively printed on the substrate of the data carrier.
  • first all lines of a first color are printed, in a second printing all lines of a second color, in a third printing all lines of a third color, etc.
  • a separate printing plate or a separate printing cylinder is used the appropriate color is applied and then printed on the substrate of the disk.
  • all colors can also be printed on the substrate of the data carrier in a single printing process.
  • the individual colors are successively or simultaneously applied to a single printing plate or a single printing cylinder and then printed on the substrate of the data carrier.
  • the printing is done by conventional printing methods, i. especially in planographic printing, such.
  • high pressure e.g. in letterpress or flexographic printing, screen printing, gravure printing, e.g. in gravure or gravure printing, or in a thermography process, such as in the thermal transfer process.
  • printing inks are preferably used, which are completely opaque.
  • Printing inks which have a high glaze behavior ie printing inks consisting of translucent paints with a certain proportion of color pigments, are also particularly preferably used.
  • transparent lacquers which are accompanied by machine-readable features, such as, for example, luminescent substances, electrically conductive particles or IR- or X-ray-absorbing substances.
  • the coating with machine-readable features contrast to the surface of the security element, since this does not have the machine-readable features.
  • the machine-readable features may also be part of translucent or opaque inks.
  • the lines of the coating are designed as straight lines and particularly preferably arranged parallel to one another.
  • the lines may also be designed as concentric circles or confocal ellipses or have oval, wavy or any other shapes.
  • a combination of several of these embodiments is possible.
  • the at least one second embossed structure can also be combined with a second coating which contrasts with the surface of the data carrier.
  • the first coating is applied to the first embossing structure and the second coating is applied to the second embossing structure.
  • the coating is matched to the first and second embossing structure.
  • colors or patterns can be selectively separated, amplified, attenuated or deformed in oblique view and thus additional additional information can be generated. In the plan view or when viewing the opposite edge this additional information remains hidden.
  • the coating and the embossed structures are applied with the same spatial frequency, ie the grid width of the embossed structures and the coating is the same.
  • the coating and the embossed structures are applied with the same spatial frequency, ie the grid width of the embossed structures and the coating is the same.
  • only similar spatial frequencies to use to create beating or moiré effects, or to dispense entirely with the spatial frequencies. In this way, further optical effects can be generated, which become visible only when viewing the element from different angles or at different angles of incidence of light.
  • the two process steps embossing and printing for the production of the optically variable structure can be carried out in any order.
  • only the embossed structure can be introduced into the substrate of the data carrier and then the coating can be printed or, conversely, the coating is first printed and then the embossed structure is introduced into the substrate of the data carrier.
  • both method steps can take place simultaneously in a common method step.
  • the information introduced by the embossing and the coating on the security element may e.g. consist of letters and / or numbers, but also any symbols, graphic elements or graphics, images, 1D or 2D codes or other patterns.
  • the substrate of the security element used can be single-layered or multi-layered and be coated on one or more layers, printed, pasted, laminated, laminated or otherwise treated on its surface or in the substrate.
  • further (also machine-readable) security substances can be applied or applied in and / or on the substrate, which can be activated, covered, partially destroyed or removed when the first and / or second tilt image is generated. These further security substances preferably produce a further tilt image.
  • the security element can consist of any substrate suitable for intaglio printing. Particularly preferred are paper and paper-like substrates. There are no conditions attached to the type of paper, so that usual papers of fibers of annual plants, in particular cotton fibers or cellulose fibers, can be used. Likewise, papers may be used which are at least partially made of plastic fibers, preferably polyamide fibers, i. containing a proportion of polymeric material in the range between 0 and 100 wt .-%. The paper can also be combined on one or both sides with plastic films.
  • the paper layer usually has a weight of 50 g / m 2 to 100 g / m 2 , preferably 70 g / m 2 to 90 g / m 2 . Of course, depending on the application, any suitable weight can be used.
  • the paper can be processed single-layered as well as multi-layered. For multi-ply paper, the paper layers may consist of the same or different types of paper and in turn be combined with plastic films
  • the substrate material is a plastic film, for. B. a polyester film is.
  • the film may also be monoaxially or biaxially stretched. The stretching of the film, inter alia, leads to it receiving polarizing properties that can be used as another security feature.
  • polarizing properties such as polarization filters, are known to the person skilled in the art.
  • the film may also be formed as a patch covering a partial area of the substrate or as a strip extending over the entire length or width of the security document.
  • the materials used for the film are primarily plastics, in particular PET (polyethylene terephthalate), PBT (polybutylene terephthalate), PEN (polyethylene naphthalate), PP (polypropene), PA (polyamide), PE (polyethylene).
  • the film may also be monoaxially or biaxially stretched.
  • the substrate material is a multilayer composite which has at least one layer of paper or a paper-like material.
  • Such a composite is characterized by an extremely high stability, which is for the durability of the security feature of great advantage and also increases the security against counterfeiting.
  • All materials used as substrate material may have additives that serve as a mark of authenticity. It is primarily to think of luminescent, which are preferably transparent in the visible wavelength range and in the non-visible wavelength range by a suitable tool, for. B. a UV or IR radiation emitting radiation source, can be excited to produce a visible or at least detectable with auxiliary luminescence. Other security features can be used with advantage, as long as they do not affect the viewing of the imprint or only slightly.
  • the tilt image elements there may be further layers representing a pattern or image, but substantially flat or adapted to the existing grid of the tilt image. In this way, the observer's eye may be distracted from the actual tilting information when viewed evenly, which then only becomes apparent when tilted.
  • the steepness of the flanks and of the first and second embossing elements influences the tear behavior of the substrate.
  • the steeper the respective flanks are executed the stronger the substrate is embossed and elongated in this area, so that reduction of the thickness of the substrate and thus of the tear behavior occurs.
  • the angle between the longitudinal direction of the first embossing structure and the printing cylinder of the printing press influences the risk of paper damage during the production of the security element.
  • an angle of 0 ° i. the longitudinal direction of the first embossing structure is aligned parallel to the printing cylinder, a special risk of paper damage.
  • the security element e.g. a banknote
  • an angle of about 10 ° or about 45 ° is applied.
  • the embossing structures according to the invention are produced by means of an embossing tool having first depressions into which at least partially second depressions are introduced.
  • the second recesses are either introduced into the first recesses by a partial change in the geometry of the first recesses or attached at a certain angle respectively to an edge of the first recesses, so that they correspond with the corresponding embossing structures of the security element.
  • the embossing tool is an embossing die or a printing plate, in particular a intaglio printing plate whose recesses are designed as engraving in the surface of the embossing tool.
  • the cross-sectional area of the engravings here is triangular, trapezoidal, sinusoidal or semicircular.
  • the first and second recesses are introduced into the surface of the stamping tool with a gravure stylus and / or with a laser and / or with an etching method in separate operations or in one operation.
  • the depth of the depressions is about 50% of the width of the wells, in particular 10 .mu.m to 250 .mu.m, preferably 50 .mu.m to 120 .mu.m and particularly preferably 60 .mu.m to 100 .mu.m.
  • the engraving tool is responsible for the edge steepness.
  • the right flank can be machined with a separate tool which has a steep angle, and the left flank can be given a wide, flat flank outlet with a flat tool.
  • the essential advantage of the invention is the provision of integrated additional information in the form of a second tilting effect, which is generated by a second embossing structure within the flanks or on the flanks of the first embossing elements.
  • This additional information can additionally be supported by a suitable arrangement of the coating.
  • a clear assignment of a second information thus takes place within the embossing geometry of the first embossed structure. Due to the special construction of the coating and the second embossed structure within the first embossed structure, a viewer perceives a change in the interaction with respect to the surroundings.
  • security elements for data carriers are thus created that combine two tilting effects and can be produced under the machine and speed specifications of a typical printing works.
  • the security element according to the invention serves, in particular, to increase the security against forgery of value documents, such as banknotes, checks, shares, identity cards, entrance tickets, tickets, certificates, credit cards, check cards and the like.
  • value documents such as banknotes, checks, shares, identity cards, entrance tickets, tickets, certificates, credit cards, check cards and the like.
  • Fig. 1 shows an inventive optically variable structure, which consists of first embossing elements 1, in which a second embossed structure is introduced.
  • a single first embossing element 1 has a triangular cross-sectional area, so that the embossing element 1 assumes the shape of a horizontal wedge with two oblique flanks. In particular, the two flanks have different colors.
  • the second embossed structure 2 is introduced into the first embossing element 1 by a partial change in the geometry of the first embossing element 1.
  • the second embossed structure 2 is introduced as a modulation of the height of the first embossing element 1 in the longitudinal direction.
  • the upper edge of the first embossing element 1 in this case has wave-shaped indentations, so that in the region of the indentations, the inclination of the flanks is reduced. If light falls vertically from above onto the first embossing element 1, it encounters flanks of differing degrees and is therefore reflected in different angular ranges.
  • the tilting effect on tilting of the security element about the longitudinal axis of the first embossing element 1 thus fails to vary greatly along the longitudinal axis.
  • the second embossed structure 2 is introduced as a modulation of the height of the first embossing element 1 in the transverse direction.
  • the upper edge of the first embossing element 1 is flattened.
  • This flattened area may, for example, have a different color than the flanks, so that when tilting the security element about the longitudinal axis of the first embossing element 1 in addition to the tilting effect of the flanks in plan view of the flattened area its color appears.
  • the second embossed structure 2 is designed as a sipe-like indentation at the tip of the wedge in the longitudinal direction of the tip.
  • the embossed structure 2 in this case forms a longitudinal groove parallel to the upper edge of the first embossing element 1.
  • the flanks of the indentation or longitudinal groove have a color which contrasts with that of the adjacent flank of the first embossing element 1.
  • the viewer Upon further tilting about the first axis, the viewer sees the second flanks of the first embossing element 1 and the indentation, until finally the first flank of the first embossing element 1 and then the second flank of the indentation are covered by the second flank of the first embossing element.
  • FIG. 2 shows a combination of coating and embossing structure using the example of three first embossing elements 1.
  • the upper illustration of FIG Fig. 2a and Fig. 2b shows the coating, the middle figure the combination of coating and embossing structure in side view and the bottom figure the combination of coating and embossing structure in view obliquely from above.
  • the coating is according to Fig. 2a as continuous strips 8, which are aligned parallel to the longitudinal axis of the first embossing elements 1, and as interrupted strips 7, which are aligned parallel to the longitudinal axis of the second embossing elements 4 executed.
  • the broken strips 7 are printed on a flank of the second embossing elements 2 and the continuous strips 8 are printed on that flank of the first embossing elements 1, which is opposite to the second embossing elements 4.
  • the coating according to Fig. 2b be designed as a continuous strip 9, which are aligned parallel to the longitudinal axis of the second embossing elements 4.
  • the continuous strips 8 are printed without a gap on one side of the flanks of the second embossing elements 2, the flank of the first embossing elements 1, which is opposite to the second embossing elements 4, remains free.
  • Fig. 3 shows a combination of coating and embossed structure using the example of a large-area arrangement of first embossing elements accordingly Fig. 2a ,
  • a coating in the form of a background printing 10 is associated with a first embossing structure in the form of first embossing elements 1.
  • the second embossing structure in the form of second embossing elements 4 shows additional information 11, which in this exemplary embodiment is designed as a rectangle or number or letter "I".
  • a single optically variable element as a cutout Fig. 3d shows Fig. 3e ,
  • Fig. 4b From the direction of view A a continuous horizontal strip 8 on the flank of the first embossed structure 1 and from the direction B a regularly arranged pattern of broken strips 7 and spaces to recognize that continues on the flanks of the arranged in the first embossed pattern 1 second embossing structure 4. From the viewing direction C, the regularly arranged pattern of interrupted strips 7 and spaces can also be recognized on the flank of the first embossing structure 1. However, there is no imprint on the flanks of the second embossed structure as seen from this viewing direction, so that a gap in the form of additional information 11 is visible in this area.
  • Fig. 5 different embodiments of single and multi-colored coatings are shown.
  • the colored coating is implemented in different gray values and hatchings.
  • the schematic representation in the color vary, more filigree elements, such as micro-lines or points, fragments or special characters have.
  • an embodiment could represent the black area as the primary color cyan, the gray area magenta and the hatched area yellow.
  • a limitation in the colors is theoretically not.
  • Fig. 5a This shows a monochrome coating, which is designed as a single-color strip with a grid spacing X and a width which is smaller than the grid spacing X. No color is applied between the individual strips, so that the color of the substrate emerges in these areas.
  • Fig. 5b the coating is replaced by an alternating sequence of two, in Fig. 5f formed by three differently colored stripes.
  • the grid spacing of the strips is greater than the width of the strips, so there is a gap between the individual strips. In each case no color is applied in the gap between the individual strips, so that the color of the substrate emerges in these areas.
  • Fig. 5c and Fig. 5e There is no gap between the individual strips so that the individual strips are adjacent to each other.
  • the multicolor coating is formed by a monochrome background printing, over which a monochrome line pattern according to Fig. 5a or a multicolored line pattern according to Fig. 5b is printed.
  • Fig. 5h and Fig. 5i show a multicolored background pressure accordingly Fig. 5e respectively.
  • Fig. 5f about which a monochrome strip-shaped coating accordingly Fig. 5a is printed.
  • a coating is shown, which is formed from an alternating sequence of strips and pattern elements, such as circles and rectangles.

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  • 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)
  • Polarising Elements (AREA)
  • Prostheses (AREA)
  • Eyeglasses (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Claims (18)

  1. Élément de sécurité comportant une structure optiquement variable, qui comporte une première structure gaufrée formée par des premiers éléments gaufrés (1), laquelle est combinée à un revêtement contrastant par rapport à la surface de l'élément de sécurité, de telle sorte qu'au moins des zones partielles du revêtement sont visibles dans le cas d'une observation à partir d'un premier angle de vue, mais sont masquées au moins en partie dans le cas d'une observation à partir d'un deuxième angle de vue, de telle sorte que lors du basculement de l'élément de sécurité autour d'un premier axe se produit un premier effet de basculement, caractérisé en ce que la structure optiquement variable comporte au moins une deuxième structure gaufrée (2), qui est disposée à l'intérieur de la première structure gaufrée et génère, en plus du premier effet de basculement, un deuxième effet de basculement, sachant que ladite au moins une deuxième structure gaufrée
    - est insérée dans les premiers éléments gaufrés par une variation partielle de la géométrie des premiers éléments gaufrés, ou
    - est formée par des deuxièmes éléments gaufrés (3, 4, 5, 6) qui sont appliqués selon un angle déterminé respectivement contre un flanc des premiers éléments gaufrés.
  2. Élément de sécurité selon la revendication 1, caractérisé en ce que le deuxième effet de basculement se produit, en plus du premier effet de basculement, à l'intérieur du premier ou du deuxième angle de vue ou lors du passage du premier vers le deuxième angle de vue ou du deuxième vers le premier angle de vue.
  3. Élément de sécurité selon la revendication 1 ou 2, caractérisé en ce que, pour le cas où ladite au moins une deuxième structure gaufrée est insérée dans les premiers éléments gaufrés par une variation partielle de la géométrie des premiers éléments gaufrés, ladite au moins une deuxième structure gaufrée est insérée dans les premiers éléments gaufrés sous forme de modulation
    - de la hauteur dans le sens longitudinal et/ou
    - de la hauteur dans le sens transversal et/ou
    - de la largeur et/ou
    - de l'inclinaison des flancs des premiers éléments gaufrés.
  4. Élément de sécurité selon la revendication 3, caractérisé en ce que la modulation de la largeur et/ou de l'inclinaison des flancs des premiers éléments gaufrés est réalisée sur un ou sur les deux côtés d'un élément gaufré.
  5. Élément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que les premières et les deuxièmes structures gaufrées sous réalisées sous la forme de structures en réseau, en particulier sous la forme de réseaux à lignes avec une largeur de trame constante.
  6. Élément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite au moins une deuxième structure gaufrée est combinée à un deuxième revêtement contrastant par rapport à la surface du support de données.
  7. Élément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que la hauteur et/ou la dimension latérale des structures gaufrées sont supérieures à 30 µm.
  8. Élément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que les structures gaufrées sont réalisées sous la forme d'un gaufrage à froid ou d'un gaufrage à froid en demi-teintes ou d'un gaufrage à dominante en couleur.
  9. Élément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que les structures gaufrées comportent des éléments gaufrés en forme de lignes et/ou des éléments gaufrés non en forme de lignes qui, dans le sens longitudinal, sont droits, ondulés et/ou courbes.
  10. Élément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que le revêtement contrastant est réalisé en forme de lignes.
  11. Élément de sécurité selon la revendication 10, caractérisé en ce que les structures gaufrées et le revêtement contrastant possèdent la même fréquence locale ou une fréquence locale similaire ou une fréquence locale différente.
  12. Support de données avec un élément de sécurité selon l'une des revendications 1 à 11.
  13. Procédé destiné à la réalisation d'un élément de sécurité selon au moins l'une quelconque des revendications 1 à 11, caractérisé en ce que le revêtement est imprimé sur le substrat de l'élément de sécurité, les différentes couleurs du revêtement étant imprimées simultanément ou successivement sur le substrat de l'élément de sécurité et l'impression étant réalisée en impression à plat, telle que le procédé offset, en impression en relief, telle que la typographie, ou par le procédé flexographique, le procédé de sérigraphie, le procédé d'impression en taille douce, tel que l'héliogravure tramée ou le procédé de gravure en creux, ou par un procédé de thermographie, tel que le procédé de thermotransfert.
  14. Procédé selon la revendication 13, caractérisé en ce que les structures gaufrées sont réalisées au moyen d'un outil de gaufrage, par le procédé de gravure en creux ou au moyen d'un procédé thermique.
  15. Outil de gaufrage destiné à la réalisation d'un élément de sécurité selon au moins l'une quelconque des revendications 1 à 11, avec des premiers creux, caractérisé en ce que dans au moins une partie des premiers creux sont insérés au moins par zones des deuxièmes creux, les deuxièmes creux étant insérés soit dans les premiers creux par une variation par zones de la géométrie des premiers creux, soit appliqués selon un angle déterminé respectivement contre un flanc des premiers creux.
  16. Outil de gaufrage selon la revendication 15, caractérisé en ce que l'outil de gaufrage est un poinçon ou une plaque imprimante, en particulier une plaque de gravure en creux et les creux sont réalisés sous forme de gravure dans la surface de l'outil de gaufrage.
  17. Outil de gaufrage selon la revendication 15 ou 16, caractérisé en ce que la profondeur des creux correspond à environ 50 % de la largeur des creux.
  18. Outil de gaufrage selon au moins l'une quelconque des revendications 15 à 17, caractérisé en ce que la profondeur des creux mesure 10 µm à 250 µm, de préférence 50 µm à 120 µm et encore mieux 60 µm à 100 µm.
EP08785048A 2007-07-25 2008-07-24 Élément de sécurité présentant plusieurs structures optiquement variables Active EP2173567B1 (fr)

Applications Claiming Priority (2)

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DE102007035161A DE102007035161A1 (de) 2007-07-25 2007-07-25 Sicherheitselement mit mehreren optisch variablen Strukturen
PCT/EP2008/006095 WO2009013000A2 (fr) 2007-07-25 2008-07-24 Élément de sécurité présentant plusieurs structures optiquement variables

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EP2173567A2 EP2173567A2 (fr) 2010-04-14
EP2173567B1 true EP2173567B1 (fr) 2011-09-14

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CN (1) CN101765516B (fr)
AT (1) ATE524326T1 (fr)
CA (1) CA2694383C (fr)
DE (1) DE102007035161A1 (fr)
RU (1) RU2463169C2 (fr)
WO (1) WO2009013000A2 (fr)

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DE102011114644A1 (de) 2011-09-30 2013-04-04 Giesecke & Devrient Gmbh Sicherheitselement mit mehreren optisch variablen Strukturen und einem kinematischen Effekt
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EP2594149A1 (fr) 2011-11-18 2013-05-22 Fabrica Nacional De Moneda Y Timbre - Real Casa De La Moneda Objet comportant une région de sa surface adaptée pour montrer plusieurs images
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DE102017106721A1 (de) 2017-03-29 2018-10-04 Leonhard Kurz Stiftung & Co. Kg Verfahren zum Herstellen einer Mehrschichtfolie und eine Mehrschichtfolie sowie ein Sicherheitselement und ein Sicherheitsdokument
DE102017005192A1 (de) * 2017-05-31 2018-12-06 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit zwei Kippeffekten
DE102017006949A1 (de) * 2017-07-21 2019-01-24 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit optisch variabler Prägestruktur
RU2661222C1 (ru) * 2017-08-25 2018-07-13 Акционерное общество "Гознак" (АО "Гознак") Защищенный носитель информации, обладающий оптически переменным эффектом, и способ изготовления защищенного носителя информации, обладающего оптически переменным эффектом
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DE102018000243A1 (de) * 2018-01-15 2019-07-18 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit einer optisch variablen Struktur in einer Vertiefung
JP6374625B1 (ja) 2018-02-02 2018-08-15 株式会社ドワンゴ 表示媒体、表示支援媒体、処理装置および処理プログラム
EP4013626B1 (fr) 2020-03-11 2023-09-06 Koenig & Bauer AG Élément de sécurité, document de sécurité équipé d'un élément de sécurité ainsi que dispositif et procédé pour produire un élément de sécurité
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US9821593B2 (en) 2013-01-14 2017-11-21 Giesecke+Devrient Mobile Security Gmbh Reliefed card-shaped data carrier

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WO2009013000A2 (fr) 2009-01-29
EP2173567A2 (fr) 2010-04-14
ATE524326T1 (de) 2011-09-15
CA2694383A1 (fr) 2009-01-29
CA2694383C (fr) 2015-10-06
WO2009013000A3 (fr) 2009-03-26
RU2463169C2 (ru) 2012-10-10
DE102007035161A1 (de) 2009-01-29
CN101765516A (zh) 2010-06-30
CN101765516B (zh) 2012-03-21
RU2010106245A (ru) 2011-09-20

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