EP1779335B1 - Support de donnees ayant une structure optiquement variable - Google Patents

Support de donnees ayant une structure optiquement variable Download PDF

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Publication number
EP1779335B1
EP1779335B1 EP05791307A EP05791307A EP1779335B1 EP 1779335 B1 EP1779335 B1 EP 1779335B1 EP 05791307 A EP05791307 A EP 05791307A EP 05791307 A EP05791307 A EP 05791307A EP 1779335 B1 EP1779335 B1 EP 1779335B1
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EP
European Patent Office
Prior art keywords
embossed
coating
elements
security element
optically variable
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
EP05791307A
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German (de)
English (en)
Other versions
EP1779335A1 (fr
Inventor
Astrid Heine
Roger Adamczyk
Christof Baldus
Karlheinz Mayer
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
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Giesecke and Devrient GmbH
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Publication date
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Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Priority to PL05791307T priority Critical patent/PL1779335T3/pl
Priority to EP10172219.7A priority patent/EP2284805B1/fr
Publication of EP1779335A1 publication Critical patent/EP1779335A1/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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—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
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • B42D2033/24—

Definitions

  • the invention relates to a data carrier having an optically variable structure, which has an embossed structure and a coating contrasting with the surface of the data carrier, wherein the embossed structure and the coating are combined in such a way that at least parts of the coating are completely visible when viewed vertically, but concealed when obliquely viewed be and at least one predetermined viewing angle, a first information is recognizable, which is not or only very weak to see when viewed vertically.
  • data carriers such as banknotes, securities, credit or identity cards, passports, certificates and the like, labels, packaging or other elements for product protection are equipped with optically variable security elements.
  • the DE 102 43 863 A1 a data carrier with an optically variable structure, which has an embossed structure with raised areas and a contrasting to the surface of the data carrier first coating, which are combined so that when alternately vertical and oblique viewing a tilting effect arises.
  • the US 6,176,521 B1 Proposes to provide a plurality of repeated changes in the reflection angle of an image medium having a plurality of different locally colored image areas such that color changes of the locally colored image areas arise when the viewing angle is changed.
  • optically variable security element The protection against forgery of an optically variable security element is based on the fact that the visually simple and clearly recognizable optically variable effect is not or only insufficiently reproduced by the abovementioned reproduction devices.
  • a line structure is additionally embossed in the data carrier in the region of this line print pattern so that flanks arise that are only visible at certain viewing angles.
  • these lines are visible when looking obliquely at the flanks provided with the lines. If the sides are viewed at an angle, the line pattern is not recognizable. If one sees phase jumps in sub-regions of the embossed surface in the line grid or in the embossing grid, then information can be displayed, which are recognizable either only from the first oblique viewing angle or only from the second viewing angle.
  • the object of the present invention is now to improve an optically variable security element with regard to its security against counterfeiting and with regard to its visual verifiability.
  • the optically variable structure consists of a coating and an embossing structure superimposed on this coating.
  • the embossing structure in this case has non-linear embossed embossing elements which are combined with the coating in such a way that patterned elements of the coating are at least partially arranged on the flanks of the embossing elements such that different information becomes visible in the optically variable structure when the viewing direction is changed.
  • the optically variable structure to an additional information that arises by varying the shape, size, height or by varying the arrangement of the non-linear embossing elements by shading effects.
  • the nonlinear embossing elements are characterized in particular by at least three flanks, wherein these flanks have dimensions which enable the shading effect according to the invention. That is, the planks must be dimensioned so that for a viewer who looks at such a flank, a lying behind this edge information is at least partially hidden or toschittet.
  • the flanks of the non-linear embossing elements therefore form flat or curved surfaces which either merge into one another continuously, as for example in lateral surfaces of rotationally symmetrical spatial form (eg spherical sections, truncated cones) or at a certain angle abut each other, such as in polygonal spatial forms (eg pyramids, tetrahedrons).
  • the nonlinear embossing elements can flanks of planar and / or curved surfaces have, in particular, the embossing elements, for example, the shape of n-sided pyramids, tetrahedrons, truncated pyramids, cylindrical sections, cones, conic sections, paraboloids, polyhedra, cuboids, prism spherical cutouts, spherical segments, 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. Particularly preferred embossing elements in the form of spherical sections, or three- or four-sided pyramids are used.
  • the non-linear embossing elements are preferably tactile detectable.
  • the nonlinear embossing elements also 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 can be arranged specifically and separated from each other.
  • non-linear embossing elements Depending on the shape, height and extent of the non-linear embossing elements, specific visual effects can be specifically created. For example, provide non-linear embossing elements in pyramid or truncated cone shape with steeper edges a more contrast-rich effect in a tilting movement as z. B. non-linear embossing elements in the form of flattened spherical segments at the same embossing height.
  • An embossing structure with top-tapered embossing elements typically exhibits a different appearance of the same information than one with top-flattened protuberances, e.g. Train plateaus.
  • pyramid-shaped, spherical segment-shaped or hemispherical embossing elements are preferably used for the invention.
  • the non-linear embossing elements can be arranged in any desired manner to one another in order to produce a specific embossed structure. At least part of the embossed structure may consist of grid-shaped, non-linear embossed elements. The non-linear embossing elements form the grid points.
  • halftone dots should be understood in the manner known in the printing art.
  • the halftone dots have a planar extension in the substrate plane and are not punctiform in the mathematical sense.
  • the analogy used is between the dot size (or areal extent) of the halftone dots and the footprint of the nonlinear embossed elements in the volume level.
  • the base area of the non-linear embossed elements in the data carrier plane is actually a projection of the embossing element geometry into the data carrier plane.
  • halftone dots can be arranged in a constant periodic pattern, in which one obtains an arrangement with the same dot pitch, the same dot size and the more constant one Dot shape over the entire grid understands.
  • the possibility of varying the point size results in a so-called amplitude-modulated periodic raster.
  • a structure having dots with variable dot pitch, variable dot size, and dot shape is referred to as a second order non-periodic screen. It has been shown that an embossing structure suitable for the invention can also be produced analogously thereto.
  • the coating of the optically variable structure may be a metal layer, a metal effect layer or an optically variable layer, which is present in full surface or structured on the object to be protected.
  • the coating may also be any, preferably printed, geometric pattern.
  • the coating of differently colored pattern primitives such as lines, triangles, etc., are formed. These pattern primitives may be randomized be chosen in their dimensions so that the viewer perceives the coating as a homogeneous colored surface.
  • the pattern primitives can also have at least one colored surface, geometric patterns, alphanumeric characters or any desired image motifs.
  • the different colored areas and / or information of the pattern base element are preferably arranged on different flanks of the non-linear embossed element, so that the individual colored areas and / or information are visible from different viewing angles.
  • the pattern primitives may also be part of any print image, such as a guilloche pattern or an image motif.
  • the pattern primitives may form crossing points of guilloche lines.
  • the basic pattern element here consists of intersecting, differently colored line sections whose length is ultimately determined by the non-linear embossing element arranged in this area.
  • the pattern primitives form the halftone dots of a preferably printed grid.
  • embossed structures and coating are therefore formed in the form of a grid.
  • the raster elements of the coating are formed by pattern primitives, each of which has three individual elements in the colors red, green and blue.
  • the individual elements are in the form of triangles or circle segments.
  • the raster elements of the embossed structure have the shape of three-sided pyramids, which form the non-linear embossed elements.
  • Each pyramid is associated with a pattern primitive, wherein the differently colored individual elements of the pattern primitive are arranged on different edges of the pyramid and the individual color components of the pattern primitives on the flanks of the same orientation.
  • the individual elements of the basic pattern element are of the same size and all the basic pattern elements of the coating have the same structure, so that the coating appears almost white when viewed vertically from the optically variable structure.
  • additional information may be generated, for example, by varying the coating, e.g. by omitting individual raster elements or variation of the shape of the raster elements.
  • the coating grid remains the same and the grid of the embossed structure is varied.
  • the non-linear embossing elements can be arranged offset to the environment. Another possibility is to increase the spacings of the nonlinear embossing elements, i. the raster width of the embossed structure to vary continuously, so that with respect to the coating grid beating occurs.
  • individual non-linear embossing elements may be missing or the shape of the non-linear embossing elements may vary.
  • a pattern base element and a nonlinear embossing element is referred to below as a "structural element”.
  • the combination of pyramid and three-color pattern base element thus forms the structural element.
  • the pattern base element of the structural element for example, only have a colored surface which is arranged on one of the flanks of the non-linear embossing element.
  • the remaining flanks of the non-linear embossing element show the color of the embossed background, for example, the white color of a security.
  • the viewer perceives an interplay between different brightness levels of the color used. At certain viewing angles Under certain circumstances, the viewer only perceives the color impression caused by the unprinted paper.
  • Such structural elements can also be designed as complicated and complicated, whereby the protection against counterfeiting is increased.
  • the structural elements can be designed and arranged such that no information can be recognized in incident light and the information only emerges at certain viewing angles.
  • the coating can be monochrome, so that all recognizable information has the same color. But it can also be seen when viewed vertically, a mixed color. On the other hand, oblique viewing reveals various information in different colors.
  • the structural elements can also be designed so that a vertical view of the optically variable structure, a multi-colored image is recognizable recognizable, however, the visual impression varies when changing the viewing angle. This variation ranges from a pure color change to a change in the displayed image information.
  • the structural elements correspond to the pixels of a multicolor image motif to which certain color components of a primary color system are assigned.
  • the color components assigned to the respective pixel form the basic pattern element which is combined with a matching nonlinear embossing element.
  • the total area associated with the pattern primitive is preferably subdivided into areas which are covered with the respective colors of the primary color system.
  • the color impression of the basic pattern element results here from the size of the areas occupied by the respective colors. These surfaces can be directly adjacent to each other or arranged overlapping be. Also, the color areas need not fill the entire area of the pattern primitive. In this case, the color impression of the pattern base element is also determined by the color of the background.
  • the primary color system cyan, magenta and yellow are used, then three color areas are provided in the total area provided for the pattern base element which are arranged so that one color area each comes to lie on one flank of the nonlinear embossed element used.
  • the nonlinear embossing elements When viewed obliquely or when rotating such an optically variable structure, individual color components of the image information are obscured by the nonlinear embossing elements, so that the image information appears in a mixed color of the color surfaces of the pattern basic elements lying in the viewing direction.
  • the nonlinear embossing element is embodied, for example, as a spherical section, then the three preferably differently sized color surfaces of cyan, magenta and yellow lie on the round lateral surface of the embossing element.
  • the structural element consists in this case of an embossing element in the form of a spherical segment, on the lateral surface of different sized colored surfaces of cyan, magenta and yellow are arranged so that the different colors are successively visible when rotating the structural element about its axis of symmetry.
  • an optically variable structure which, when viewed vertically, displays colored image information, the size of the color areas must vary from one structural element to another structural element.
  • the coating may have differently colored geometric structures as a basic pattern element, but these are arranged randomly and randomly.
  • the nonlinear embossing elements are designed in their dimensions so that they produce a tactile structure that is easily perceptible to humans.
  • the tactile, optically variable structure provides additional protection against imitation by color photocopying or scanning the media.
  • the optically variable structure may have additional information that is produced by varying the coating and / or the embossed structure according to the invention.
  • the additional information according to the invention by a variation of the shape, the size or height of the non-linear embossing elements or by a variation of the arrangement of nonlinear embossing elements, such as a regional offset or a region-wise change in the screen or omission of one or more non-linear embossed elements ,
  • the coating is varied in the region of an information, this can be caused, for example, by a variation of the shape or the color of the coating.
  • a variation of the arrangement of the coating is possible, such as an offset, a change in the screen width, reflection or omission of individual or multiple pattern primitives.
  • the embossed structure may additionally be subdivided into partial regions in which different partial embossing structures are arranged.
  • the partial embossing structures are arranged offset in at least two adjoining partial areas by a fraction, in particular a third of the grid width.
  • parts of the partial embossing structures may also have an unembossed edge contour.
  • optically variable structure forms a security element which is difficult to imitate and can be arranged directly on any data carriers.
  • the optically variable structure can also be part of a security element which, in addition to the optically variable structure, has further security features.
  • the security element may have, for example in the region of the optically variable structure, a further color layer, which is preferably translucent and which is arranged congruently with the raised regions of the embossed structure.
  • a further color layer which is preferably translucent and which is arranged congruently with the raised regions of the embossed structure.
  • the security element can have further layers or authenticity features, such as, for example, a metallic layer, an additional translucent, optically variable layer or a film element. Such layers or elements may be superposed or underlaid with the optically variable structure.
  • the optically variable structure according to the invention or the security element according to the invention is preferably applied to data carriers, such as security and value documents, such as banknotes, stocks, bonds, certificates, vouchers, credit or identity cards, passports or the like.
  • data carriers such as security and value documents, such as banknotes, stocks, bonds, certificates, vouchers, credit or identity cards, passports or the like.
  • the data carriers are equipped in this way with an easily recognizable even to lay security element to increase the security against counterfeiting.
  • the optically variable structure or the security element according to the invention can also be used very advantageously in the field of product protection.
  • the optically variable structure or the security element can be applied to corresponding labels or packaging or the product itself.
  • paper is used as data carrier material, in particular cotton vellum papers, paper-like materials consisting of plastic films, paper coated or laminated with plastic films or multilayer composite matexials are suitable.
  • the security element according to the invention or of the optically variable structure preference is given to an arbitrary substrate first provided with the coating and then produced in register to this coating the embossed structure. In principle, however, it is also possible to provide the method steps in reverse order.
  • the coating is preferably printed or transferred by thermal transfer to the substrate.
  • the coating can be produced in any printing process, for example in planographic printing, for example in offset printing, in high-pressure printing, for example in letterpress or flexographic printing, in screen printing, in gravure printing, for example in screen gravure or intaglio printing, or in a thermographic process.
  • the embossed structure is produced by means of an embossing tool, which may be, for example, a gravure printing plate.
  • the embossing is produced by means of a non-ink-bearing intaglio printing plate as blind embossing.
  • the embossed structure can also be produced in color-guiding intaglio printing. This manufacturing variant is particularly suitable for the embodiments in which congruent to the embossed structure, a further color layer is provided.
  • a plate surface is milled with an engraving stylus or a laser.
  • an engraving stylus or a laser any material such as copper, steel, nickel or the like may be used.
  • the engraving stylus used for the milling preferably has a flank angle of about 40 ° and a rounded tip that approximates a spherical segment or sector.
  • the embossing tool can be milled as a single use or even as multiple benefits.
  • the order of the two process steps is freely selectable.
  • the coating is first applied and then embossed.
  • the alternative of embossing first and then applying the coating offers the advantage of higher color brilliance and sharper contoured imprinting. This effect stems from the fact that during the embossing process the substrate is calendered at the same time and thus obtains a smoother, less absorbent surface.
  • the Fig.1 shows a data carrier 1 in the form of a banknote with an optically variable structure 3, which is placed in the print image area 2 of the data carrier 1 and in the pressure-free area.
  • the optically variable structure 3 is according to the invention as a so-called human feature, ie as a testable by humans without aids feature, in addition to optionally further features for determining the authenticity of the data carrier used.
  • the provision of such features is particularly useful for banknotes, but also for other monetary documents, such as stocks, checks and the like.
  • As a data carrier in the context of the invention are also labels, passports or cards into consideration, as they are today z. B. for the identification of persons or goods or to carry out transactions or services.
  • the optically variable structure 3 can be of different construction, combined with the resulting different effects from different viewing directions.
  • the optically variable structure 3 consists of a contrasting to the surface of the data carrier single- or multi-colored coating, such as a pattern, image or alphanumeric information that is generated by printing or otherwise, such as by means of a transfer process.
  • the effects according to the invention which can be used for checking the authenticity are produced by the embossing structure cooperating with the coating.
  • optically variable structures according to the invention have in common that they and the effects resulting therefrom can not be imitated by the reproduction techniques known today, in particular copiers, since the copiers can reproduce the optically variable structure only from one viewing direction, so that the optically variable Effect is lost
  • the embodiments described in the following examples are reduced to the essential core information for ease of understanding.
  • much more complex patterns or images in single or multi-color printing can be used as a coating.
  • the information presented in the following examples can also be replaced by arbitrarily complex image or text information.
  • the production of the coating e.g. As a print usually uses the possibilities of printing technology. Typical diameters of pattern elements from about 10 ⁇ m are used.
  • the nonlinear embossing elements which form the embossed structure generally have an embossing height in the range from 20 to 250 ⁇ m and preferably a diameter in the range from 40 to 1000 ⁇ m.
  • Fig. 2 shows a schematic sectional view along the line AA (s. Fig.1 ) and in conjunction with the Fig. 3, 4 and 5 an optically variable structure, in which the embossed structure 4 is formed by regularly arranged, uniform non-linear embossing elements 5, that is, is designed as a periodic grid.
  • the non-linear embossed elements 5 are provided with a coating 7, which is designed as a multi-colored pattern whose individual color surfaces lie on the flanks of the non-linear embossed elements.
  • non-linear embossed elements 5 as elevations which are preferably produced by embossing of the data carrier, can be clearly seen in the sectional view at the top of the data carrier. If the media is mechanically deformed with an embossing tool, the bottom of the data carrier material will show the negative deformation. The deformation is shown here only schematically. As a rule, the disk reverse side will not have such a pronounced embossing pattern. In the following, only the upper or front side of the data carrier essential for the understanding of the invention will be considered. The deformation of the lower or rear side is not essential to the invention, but merely a concomitant of special embossing techniques, such as e.g. the intaglio printing. However, it can serve as another authenticity feature.
  • the 3 and 4 show a detail of the individual components of the optically variable structure 3 in plan view.
  • a dashed square grid 6 was drawn in order to facilitate the viewer's orientation.
  • the embossed structure 4 in this example coincide with a side length X of the square grid 6.
  • Fig. 3 can be seen, the non-linear embossing elements 5 in the example shown, the shape of spherical sections.
  • the coating 7 is shown as a pattern of repeating circular surfaces 8 and squares 9, wherein all circular surfaces 8 a first color, z. Cyan, and all squares 9 a second color, e.g. As magenta wear.
  • a non-linear embossing element 5 assigned and form the pattern basic elements according to the invention.
  • the circular surface 8 and the square 9 are diagonally opposite.
  • the Fig. 5 shows in perspective the interaction of the in the 3 and 4 shown components of the optically variable structure 3.
  • the arranged within a square, non-linear embossing element 5 according to Fig. 3 and the associated coating 7 according to Fig. 4 In this case form a structural element 10.
  • a horizontal row of the structural elements 10 has been shown.
  • the selected viewing direction From the in the Fig. 5 the selected viewing direction, only the magenta squares 9 can be seen, which thus characterize the color impression of the optically variable structure 3 from this viewing direction.
  • mixed colors between cyan and magenta with different mixing ratios are visible to the viewer, as well as pure magenta, the latter eg from one of the position of the observer according to Fig. 5 opposite position. The viewer thus perceives a color change game.
  • the optically variable structure 3 When viewed vertically, the optically variable structure 3 uniformly appears largely homogeneous in the mixed color of cyan and magenta.
  • the principle described above can also be used for more complicated image information.
  • two or more images are decomposed into individual pixels, which are arranged so that the pixels belonging to an image come to lie on the flanks of the same orientation.
  • the individual images When viewed vertically, depending on the design, only one uniformly colored surface or overall information can be recognized. When viewed obliquely, the individual images become visible.
  • the embossed structure 4 may alternatively have embossing elements of any other geometric shapes, with a particular expression of the effect being achieved in each case. For example, provide embossing elements in pyramidal or truncated cone shape with steeper edges a more contrast-rich effect in a tilting movement than z. B. embossing elements in the form of flattened ball sections at the same embossing height.
  • FIG. 6 A selection of possible geometries of the non-linear recuperator show the Fig. 6 (a, b) to 13 (a, b).
  • the Fig. 6a to 13a show a perspective view and the Fig. 6b to 13b a plan view of various inventive non-linear embossing elements.
  • non-linear embossing elements in the form of spherical sections having a diameter in the range from 40 to 1000 .mu.m, in particular from 100 to 600 .mu.m, more preferably from 470 to 530 .mu.m have proven to be particularly advantageous.
  • the embossing height is in the range of 20 to 250 microns, in particular in the range of 50 to 120 microns.
  • embossing element shapes and dimensions may be particularly advantageous.
  • the advantageous value ranges can be quite far away from the values determined for security paper.
  • the production of the non-linear embossing elements is preferably carried out by mechanical deformation of the data carrier material.
  • an embossing tool according to the invention is used, which is produced with an engraving tool according to the invention. So far, a gravure stylus has proved to be particularly suitable, in which the tip was adapted to the specific requirements by the tip was flattened. This adapted engraving tool preferably has a flank angle of about 40 °.
  • the producible embossing element geometries depend on the engraving tool used. If, for example, instead of a gravure stylus, a laser engraving is selected as the method for producing the embossing tool also create embossing element geometries with perpendicular to the disk plane side surfaces. For example, cylindrical embossing elements can be produced by means of laser engraving.
  • Fig. 14 shows another embodiment of the embossed structure 4 in plan view, in which the non-linear embossing elements 11 consist of four-sided pyramids.
  • Fig. 15 shows in plan view the associated coating 7 according to the invention. It consists of regularly arranged rectangles 12, 13 of different color. In each case two differently colored rectangles 12, 13 form a basic pattern element and in this case belong to a structural element 10 and are arranged such that they are arranged on opposite flanks of the pyramidal embossing elements 11.
  • Fig. 16 shows the perspective view of a series of structural elements 10, in which each of the rectangle 12 can be seen.
  • FIG. 17 Another variant of the principle explained in Example 2 is in Fig. 17 shown.
  • the optically variable structure 3 has four different images, which can be recognized in each case under the lines of sight marked with the arrows 1, 2, 3, 4.
  • the associated embossing structure is as in Example 2 of four-sided pyramids 11.
  • the inventive Coating 7 consists of basic pattern elements of basically identical construction.
  • a pattern primitive is composed of four triangles, wherein in each of the triangles an image portion of one of the four images is arranged.
  • the triangle labeled "1" belongs to the image recognizable under Viewing direction 1, the triangle "2" to the image recognizable under Viewing direction 2, etc.
  • image information may be recognizable, but it is different from the images recognizable under the different viewing directions
  • the coating and / or the embossed structure Due to the special design of the coating and / or the embossed structure, information can additionally be introduced into the optically variable structure 3 that is not or only very slightly recognizable in a viewing direction perpendicular to the data carrier plane, but is easily accessible to an observer when viewed obliquely. This information can not be reproduced with the conventional reproduction techniques and thus increases the security against forgery of such a medium equipped.
  • Example 4 describes the introduction of such information 14 into the optically variable structure 3 by varying the coating 7.
  • the starting point forms the coating 7 according to Example 1, wherein for individual structural elements 10, the arrangement of the circles 8 and rectangles 9 has been changed.
  • Fig. 18 This information area is characterized by the continuous border 14.
  • the circles 8 and the rectangles 9 were interchanged.
  • the Fig. 19 again shows the periodic embossed structure 4 with embossing elements 5 in the form of spherical sections.
  • FIG. 20 is a perspective view of a synopsis in the FIGS. 18 and 19 shown coating 7 and embossed structure 5 shown. For reasons of clarity, only the middle row of the structural elements 10 is shown. In the right-hand area, the observer sees cyan-colored circular areas 8 at an oblique viewing angle, while in the left-hand area he perceives the magenta-colored squares 9.
  • This example shows the introduction of information by variation in the embossed structure.
  • Fig. 22 shows a Fräge Vietnamese 4, in supervision consists of different non-linear embossed elements 5, 15.
  • the largest part of the embossed structure 4 consists of embossing elements 5 in the form of spherical sections, as already shown in Example 1.
  • the embossing elements 15 are in the form of spherical segments.
  • a substantial part of the coating comes to lie in the valleys lying between the elevations. Since the color surfaces 9 in the valleys at certain viewing angles are much more shadowed by the surrounding embossing elements than the color surfaces 9 on the flanks of the embossing elements 5 in the form of spherical segments, information can be displayed in this way, which clearly stands out under certain conditions Viewungsingingun.
  • the Fig. 24 shows a further alternative for generating information 16 by varying the embossing element geometries used.
  • different height ball sections 5,17 are used as embossing elements.
  • the coating 7 corresponds in this example to the in Fig. 21 shown.
  • the embossed structure is analogous to that in Fig. 22 shown constructed. Only the in Fig. 22 Spherical segments represented in the region of the information 16 are replaced by spherical segments whose height is smaller than that of the surrounding spherical segments 5.
  • Fig. 24 shows a corresponding series of structural elements 10. Due to the changed flank angle and the lower height of the embossing elements 17, both the rectangles 9 and parts of the circular surfaces 8 can be seen in this area. From the perspective of Fig. 24 In the area of the information 16, a mixed color between cyan (circular area 8) and magenta (square 9) can be seen, while in the area of the embossing elements 5 only the magenta squares 9 can be seen. This can in turn be displayed information
  • FIG Fig. 26 Another possibility for forming information 16 by varying the embossed structure 4 is in FIG Fig. 26 shown.
  • oval stamping elements 18 are used.
  • the length L of these oval embossing elements 18 is twice the embossing elements 5 arranged outside the area 16. Accordingly, in this embodiment, the structural elements 19 lying in the information area 16 are twice the length L, even if the periodicity of the coating 7 is over the entire optically variable structure stays the same.
  • the length L can be up to 2 cm.
  • FIG. 27 shows the middle row of the structure elements 10, 19 produced by the superimposition in a perspective view.
  • the information elements 16 forming structural elements 19 consist of oval embossing elements on which two magenta squares 9 and two cyan circles 8 (not shown in the figure) are arranged. Due to the particular shape of the embossing elements 18, the orientation of the squares 9 changes with respect to the viewing direction. This change perceives the viewer as a color contrast to the environment and the information 16 thus becomes recognizable to him.
  • information is generated by offsetting the nonlinear emboss elements.
  • the coating 7 is identical to the coating explained in Example 1 and consists of pattern primitives, each containing a colored square 9 and a colored circle 8.
  • the embossed structure consists of embossing elements 5 in the form of spherical sections.
  • Fig. 28 schematically shows both the formed of the squares 9 and circles 8 coating as well as the embossing elements 5 in plan view.
  • the basic pattern elements are shown in a dashed square grid 6.
  • This grid 6 corresponds to the repeat of the pattern primitives.
  • the embossing elements 5 have the same repeat as the pattern primitives and are arranged so that both all circles 8 and all squares come to rest on the flanks of the embossing elements 5.
  • the column B of the square grid 6 are the embossing elements 5 around the distance a offset to the right. In this way, only the squares 9 lie on the flanks of the embossing elements 5.
  • the embossing elements 5 are additionally offset by the distance b down.
  • Fig. 29 shows a perspective view of a series of structural elements according to Fig. 28 from the viewing direction BE.
  • the column names A, B, C, D are also shown.
  • the observer perceives the squares 9.
  • the circles 8 which are not arranged on one flank of the embossing element 5 also contribute to the color impression of the structural element.
  • the square 9 is located on the side of the embossing element 5 facing away from the observer, so that the color impression is predominantly determined by the circles 8.
  • the Fig. 30 shows further possibilities to offset the non-linear embossing elements against each other.
  • the distance c corresponds to the distance between two embossing element centers.
  • the embossing elements can be offset by fractions or multiples of c or d in the x and / or y direction. In the example above, an offset of 1.5 c in the x-direction and 0.5 d in the y-direction has occurred.
  • Another way to generate information is by rotation of non-rotationally symmetric embossing element shapes, such.
  • the Fig. 31 shows embossing elements 25, the 90 ° and embossing elements 26, which are rotated by 45 ° in the drawing plane against each other. Other angle relationships can be used advantageously.
  • a development provides to combine the rotation of the non-linear embossing elements with a shift, so an offset. This results in a wide range of possible partial embossing structures for introducing information
  • Fig. 32 special embossed structures 4 are shown in plan view to explain the range of possible arrangements, configurations and possible combinations of non-linear embossing elements. These can be used for the entire embossed structure 4 or only in the area of additional information in the form as explained with reference to the above examples.
  • Fig. 32a shows the periodic arrangement of ball sections of Example 1.
  • the embossing elements 5 are arranged at a distance.
  • the distance can be very small, for example less than 10 microns. Particularly advantageous is a distance between the embossing elements of 2 microns. Since for such a small distance the embossing tool can not be produced by the conventional etching technique, this embodiment further increases the security against forgery of the optically variable structure.
  • Preferred distances are 10 to 300 ⁇ m.
  • Fig. 32b shows a stamped on each other as close as possible stamping element arrangement.
  • Fig. 32c an alternating arrangement of ball sections with a large and a small diameter of their bases is shown. For example, find four small embossing 20 place on the surface occupying the base of a large embossing element 5.
  • Fig. 32d shows alternately embossing elements 5, 21 with a circular and with a rectangular area as a base.
  • Fig. 32e represents oval embossing elements 18 in alternation with stamping elements 5 in the form of spherical sections.
  • stamping elements 5 in the form of spherical sections.
  • two embossing elements 5 are provided in the longitudinal extension of an oval embossing element 18.
  • the oval embossing element 18 can be regarded as a distorted spherical segment embossing element which has been stretched or compressed in a preferred direction.
  • Fig. 32f and g shows an embossing structure in which the embossing elements 5 are arranged overlapping each other in certain areas, ie the embossing elements were, for example, in the production of embossing tool overlapping or engraved into each other, so that there is an embossed structure in the form of a hill chain.
  • a further improvement of the effect can be achieved by a suitable combination of the two possibilities for introducing information.
  • the coating 7 is preferably designed as a printed pattern and also offers a wide range of possibilities for variation.
  • the Fig. 33 shows a two-color coating, which is composed of squares 27a, for example, magenta, and 27b, for example, cyan.
  • the dashed square grid 6 indicates the area available for a pattern primitive.
  • the squares 27a, 27b each occupy about a quarter of this area.
  • the coating 7 is subdivided into three areas A, B, C, which can be recognized by the solid lines 22.
  • area A the squares 27a, 27b are arranged alternately in color and adjacent to one another in the vertical direction.
  • squares 27a, 27b of a color are spaced from each other.
  • the gap 27c is preferably unprinted, so that the substrate material is visible. This pattern is hereinafter referred to as "basic pattern".
  • the pattern portion B is formed by shifting the basic pattern by one square side length in the vertical and horizontal directions.
  • a first information in the optically variable structure can be displayed, which is visible under certain viewing directions.
  • a pattern subregion C is formed, with which second information is displayed, which is clearly visible from another viewing angle range.
  • the boundary lines 22 serve only the vividness in order to separate the individual sample subregions A, B, C optically better from each other.
  • a complex optically variable structure is available which shows a viewer different information for several different viewing angle ranges.
  • a suitable periodic embossing element arrangement is in the Fig. 34 shown.
  • FIG. 35 To illustrate the different visual impression of the different pattern subregions (A, B and C) from an exemplary viewing direction BE, the second row of structural elements 28 from above is shown in FIG Fig. 33 in perspective view.
  • FIGS. 36 to 40 show structural elements 29 from which further suitable optically variable structures can be generated, in plan view (a) and exemplarily combined with an embossing element 5 in the form of a spherical section in a perspective view (b).
  • Fig. 36 shows the structural element 10 according to Example 1 in plan view (a) and in perspective view (b).
  • the Fig. 37 shows a structural element 29, which has a two-color printed pattern, for example, a cyan-colored circular area 8 and a magenta-colored semi-circular area 30.
  • the semicircular surface 30 determines from the perspective of Fig. 37b the color impression.
  • the cyan circular surface 8 determines the color impression. On the way there are changing mixed colors to see.
  • the Fig. 38 also shows a magenta-colored semicircular surface 30 as well as a yellow semi-circular surface 31 partially overlapping this surface. In the overlapping region 32, a mixed color is obtained, resulting in a color effect similar to that of a three-color printed pattern.
  • a tri-color pattern primitive is shown constructed of circular sectors 34, 35, 36 each arranged in a spoke-like manner.
  • a triad 34, 35, 36 is placed on a nub 5 in each case.
  • Fig. 40 shows a printed with a portion of a stripe pattern 37 embossing element 5.
  • This stripe pattern 37 is printed in monochrome, so that the viewer from the perspective of Fig. 40b the color of the strip 37 perceives. Since the back of the stamping element 5 is unprinted, the viewer perceives only the color of the substrate when changing the viewing angle by 180 °. This results in the rotation and / or tilting of the optically variable element an interplay of the brightness of the colors used for the color stripes.
  • This embodiment is also an attractive, rather discreet effect own.
  • the stripe pattern 37 can also be constructed of curved lines and / or designed multicolored.
  • a guilloche-containing pattern is also suitable for the invention.
  • a further advantageous variation of the coating consists in reducing or enlarging the individual color areas of the pattern belonging to the pattern base element, wherein the pattern repeat preferably does not change in its dimensions. It has been shown that in this way a very conspicuous color-changing, optically variable element can be produced.
  • the coating may according to another embodiment instead of a simple geometric pattern be a complicated image, which is preferably printed in multi-color printing.
  • Fig. 41 shows an example of an optically variable structure in which such a colored image 40 is used.
  • the image 40 When viewed vertically, the image 40 appears in the usual variegation. On the other hand, when viewed from the viewing directions A, B and C, one color prevails.
  • the image 40 is decomposed into pixels of equal size and the associated color components cyan, magenta and yellow are assigned to each pixel. These color components are arranged in the present case in circle segments 41, 42, 43, which in Fig. 42 be indicated by the dashed lines 38.
  • the color of the pixel is determined by the occupancy of the pixel Circle segments 41, 42, 43 set with color
  • the pixel shown in the circle segments 41, 42, 43 is only in the areas 41a, 42a, 43a with the colors cyan (c), magenta (m) and yellow (y) occupied, so that this pixel when viewed vertically one of the color mixture corresponding hue shows.
  • the color areas 41a, 42a, 43a in this case form the basic pattern element according to the invention.
  • the projection of a non-linear embossing element 5 is shown to show how the embossing element is ideally arranged relative to the circle segments 41, 42, 43.
  • This spatial arrangement between the color components cyan, magenta and yellow and embossing element 5 is for the entire image 40 set as off Fig. 43 seen.
  • the embossing element 5 and the associated color components 41a, 42a, 43a therefore form a structural element 39 in the sense of the invention.
  • a section of the image 40 in plan view is shown in a high magnification, so that the individual pixels or pattern primitives and the respectively associated color components are visible.
  • the embossing elements 5 are also shown schematically as a projection, so that it can be seen that the non-linear embossed elements and the associated color components 41a, 42a, 43a of the pixel form the structural elements 39. It follows that when viewing the image 40 from the direction A ( Fig. 41 ) the cyan components determine the image impression, while from the viewing direction B the magenta portions and from the viewing direction C outweigh the yellow portions. When turning and / or tilting the optically variable element, there are interesting color changes that can not be adjusted by other means.
  • color surfaces of the pattern primitives can alternatively also be arranged overlapping and / or asymmetrically and / or randomly.
  • the special choice of the geometry of the nonlinear embossing elements produces soft and sharp transitions between the information which are visible under the different viewing angles.
  • Fig. 44 shows a corresponding embossed structure in supervision. It consists of a square box 50, in which four-sided pyramids 51 are arranged as non-linear embossing elements. This field 50 is surrounded by embossing elements in the form of spherical segments 52.
  • the sharp-edged flanks of the pyramids 51 generate a sharp transition between the individual information arranged on the flanks during rotation and / or tilting of the optically variable element.
  • the spherical segments provide a continuous and thus smooth transition between the information due to their round shape.
  • a monochrome image motif is arranged on the pyramid-shaped embossing elements and a multicolored background motif is arranged on the spherical segments, the monochrome image motif appears and disappears abruptly in front of a colored background that varies smoothly from one color to the other and, for example, one when turning and / or tilting the security element Rainbow effect shows.
  • the coating 7 consists of a full-surface monochrome background pressure 53, the recesses 54 has in the form of semicircles.
  • This coating is combined with an embossed structure in the form of spherical sections 55, wherein the cut surfaces 56 of the spherical sections 55 coincide with the recesses 54 ( Fig. 46 ). In this way it is achieved that the recesses are recognizable only from a defined viewing direction and in a narrow angular range.
  • the recesses may of course have any shape.
  • the coating may consist of a metal layer, which is transferred by transfer to a corresponding substrate.
  • the optically variable element is produced by printing technology.
  • the coating in any printing process, preferably in offset printing, on a substrate, preferably the document material, printed and then this coating is embossed with a stamping tool accordingly.
  • a stamping tool a gravure printing plate is preferably used. This procedure is in the FIGS. 47 and 48 shown.
  • the Fig. 47 shows a disk in cross section before the embossing process.
  • the data carrier substrate 44 is first with a background layer 45 z. B. printed over the entire surface.
  • the coating 7 is applied.
  • the background layer 45 may also be in the form of information and patterns. It is also possible to use special printing inks which further increase the anti-counterfeiting effect of the optically variable element. These may be optically variable printing inks, such as printing inks containing interference pigments or printing inks containing liquid crystal pigments, or metallic effect paints, such as gold or silver effect paints.
  • the Fig. 48 shows a sectional view of the data carrier after the embossment, which was generated in the example shown as blind embossing in intaglio printing.
  • the embossment is placed so that the coating 7 comes to lie on the flanks of the embossed structure.
  • the substrate 45 may also be applied in a different process, for example in a transfer process, over the entire surface or likewise provided with recesses or a pattern.
  • metallic pattern elements or coatings can be applied in the transfer process.
  • the Fig. 49 shows the structure before embossing with substrate 44 and coating 7.
  • the Indian Fig. 49 The structure shown was ink-carrying embossed, so that a color layer 46 is congruent to the embossing. The additional color layer 46 comes to lie as topmost layer, since this embossing was carried out here as the last procedural step.
  • An at least translucent color is preferably used for the color layer 46.
  • the ink-bearing intaglio printing can be carried out in a modification so that an application of paint takes place only on the non-linear embossing elements, the valleys between the non-linear embossing elements, however, remain free of color.
  • a color with machine-readable additives such as, for example, luminescent substances, can be used for the color layer 46.
  • This example describes an alternative for the production of the optically variable element, in which first the substrate material is embossed and then the embossed surface is provided with the coating.
  • the 51 shows a section of a document material 44 in supervision.
  • the material 44 is provided with an embossed structure which has periodically blind embossed embossing elements in the form of spherical sections 5.
  • This documentary material 44 passes through a marking device 47 having non-contact marking means, such as one or more inkjet printheads.
  • the marking device 47 produces the coating according to the invention on the already existing embossed structure.
  • the coating in this case consists of grid-shaped patterned primitives, most of the pattern primitives having a circular area 8 and a square 9. For some pattern primitives the square 9 is replaced by the information 48 in the form of the letters "A", so that the coating has additional information 48.
  • the Fig. 52 shows the finished printed substrate cutout 44 in top view.
  • Fig. 53 is a perspective view of the middle row of pattern primitives according to Fig. 52 shown.
  • the marking device 47 may comprise, in addition to or as an alternative to the inkjet printheads, one or more laser scan heads that individually select pattern elements that may be selected for each location on the embossment pattern, e.g. As the letter A, write by introducing the energy of the laser beam in the substrate of the data carrier or in a coating.
  • embossed structure and coating can also be done by means of registration marks or by using a device for image capture and processing.
  • embossing element peaks or valleys must be detected, for example, by the image acquisition and processing, and their position must be made available as input values for the control of the marking device.
  • FIGS. 54 to 57 show alternative ways of producing the josselemenfis invention, in which first generates the embossed structure and then the coating is applied to the individual non-linear embossing elements.
  • the already embossed substrate 100 is passed over a roller to two inkjet heads 101, 102. Due to the curvature of the roll, the embossed structure 103 is pulled apart and fanned out somewhat, so that the inkjet heads 101, 102 can each print an embossing element on the respective flanks.
  • This is shown in the section A in Fig. 55 shown.
  • Another option is in Fig. 56 shown.
  • the already provided with the embossed structure substrate 100 is transported in the plane
  • the inkjet heads 101, 102 are arranged so that they can each print one of the non-linear embossing elements. After one of the nonlinear embossing elements is printed accordingly, the inkjet heads 101, 102 according to the in Fig. 56 Moved arrows shown. Once a line is printed by non-linear embossing elements, the inkjet heads 101, 102 are moved one line further down and the next line of non-linear embossing elements can be printed.
  • the substrate 100 can be moved.
  • Fig. 57 shows an arrangement with which a non-linear embossing element can be printed with four different print images. Such an arrangement may also be used in the embodiments described above.

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Claims (33)

  1. Elément de sécurité comportant une structure optiquement variable (3) qui présente une structure gaufrée (4) et un revêtement (7), la structure gaufrée (4) et le revêtement (7) étant combinés de telle manière qu'au moins des parties du revêtement (7) sont entièrement visibles lors d'une observation à la verticale mais sont dissimulées dans l'ombre lors d'une observation en biais, la structure gaufrée (4) comportant des éléments gaufrés surélevés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes, sur les bords desquels des primitives de motifs (8, 9, 12, 13) du revêtement (7) sont disposées au moins partiellement de telle sorte que de différentes informations deviennent visibles dans la structure optiquement variable (3) quand la direction d'observation change, caractérisé en ce que la structure optiquement variable (3) comporte une information supplémentaire qui est créée par variation de la forme, de la taille, de la hauteur ou par variation, par des effets d'ombre, de la disposition des éléments gaufrés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes.
  2. Elément de sécurité selon la revendication 1, caractérisé en ce qu'au moins une partie des éléments gaufrés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes sont disposés en forme de trame.
  3. Elément de sécurité selon la revendication 1 ou 2, caractérisé en ce qu'au moins une partie des éléments gaufrés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes sont réalisés sous forme discernable au toucher.
  4. Elément de sécurité selon une des revendications de 1 à 3, caractérisé en ce qu'au moins une partie des éléments gaufrés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes présente essentiellement la forme d'un tétraèdre, d'une section de sphère, d'une souche de pyramide, d'une souche de cône, d'une section de cylindre, d'un tore, d'un ovale, d'une goutte ou d'une pyramide.
  5. Elément de sécurité selon une des revendications de 1 à 4, caractérisé en ce que le revêtement (7) se présente sous forme d'une trame (6), de préférence sous forme d'une trame imprimée.
  6. Elément de sécurité selon une des revendications de 1 à 5, caractérisé en ce que le revêtement (7) est une couche métallique, une couche à effets métalliques ou une couche optiquement variable.
  7. Elément de sécurité selon une des revendications de 1 à 6, caractérisé en ce que la primitive de motif (8, 9, 12, 13, 41 a, 42a, 43a) comporte au moins une surface colorée (8, 9, 12, 13, 41 a, 42a, 43a).
  8. Elément de sécurité selon une des revendications de 1 à 7, caractérisé en ce que la primitive de motif (8, 9, 12, 13, 41 a, 42a, 43a) comporte plusieurs surfaces colorées (8, 9, 12, 13, 41 a, 42a, 43a) qui sont disposées au moins partiellement sur différents bords de l'élément gaufré (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes.
  9. Elément de sécurité selon la revendication 8, caractérisé en ce que les primitives de motifs (41 a, 42a, 43a) comportent des surfaces colorées (41 a, 42a, 43a) dans les couleurs d'un système de couleurs de base.
  10. Elément de sécurité selon une des revendications de 1 à 9, caractérisé en ce que la primitive de motif (8, 9, 12, 13, 30, 31, 32, 34, 35, 36, 37, 48) comporte un motif géométrique (8, 9, 12, 13, 30, 31, 32, 34, 35, 36, 37) et/ou des informations alphanumériques (48).
  11. Elément de sécurité selon une des revendications de 1 à 10, caractérisé en ce que le revêtement (7) consiste au moins partiellement en des primitives de motifs (8, 9, 12, 13) disposées de manière espacée les unes des autres et en ce que la structure gaufrée (4) consiste au moins partiellement en des éléments gaufrés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes disposés de manière espacée les uns des autres, au moins une primitive de motif (8, 9, 12, 13) étant disposée au moins partiellement sur les bords d'un élément gaufré (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes, de telle sorte que la primitive de motif (8, 9, 12, 13) et l'élément gaufré (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes constituent un élément structurel (10, 19).
  12. Elément de sécurité selon une des revendications de 1 à 11, caractérisé en ce que la structure optiquement variable (3) comporte une pluralité d'éléments structurels (39) qui représentent lors d'une observation à la verticale un motif imagé (40) multicolore dont l'impression visuelle varie lors d'un changement de l'angle d'observation.
  13. Elément de sécurité selon une des revendications 11 ou 12, caractérisé en ce que les éléments structurels (39) correspondent à des points d'image du motif imagé (40) auxquels certaines portions de couleur d'un système de couleurs sont assignées, et en ce que les primitives de motifs (41 a, 42a, 43a) comportent des surfaces colorées (41 a, 42a, 43a) dans les couleurs du système de couleurs, la taille des surfaces colorées (41 a, 42a, 43a) des primitives de motifs (41 a, 42a, 43a) correspondant à la portion de couleur respective des points d'image, de telle sorte que, quand l'angle d'observation change, l'impression de couleur de la structure optiquement variable (3) varie.
  14. Elément de sécurité selon une des revendications de 1 à 13, caractérisé en ce que l'information supplémentaire est aussi créée par variation du revêtement (7).
  15. Elément de sécurité selon une des revendications de 1 à 14, caractérisé en ce que la variation de la disposition des éléments gaufrés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes est générée par déport, modification du pas de trame, non utilisation de certains ou de plusieurs éléments gaufrés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes.
  16. Elément de sécurité selon une des revendications de 1 à 15, caractérisé en ce que l'information supplémentaire est aussi créée par une variation de la forme ou de la couleur du revêtement (7).
  17. Elément de sécurité selon une des revendications de 1 à 15, caractérisé en ce que l'information supplémentaire est aussi créée par une variation de la disposition du revêtement (7), telle que déport, modification du pas de trame, réflexion ou non utilisation de certains ou de plusieurs primitives de motifs (8, 9, 12, 13, 27a, 27b, 27c).
  18. Elément de sécurité selon une des revendications de 1 à 17, caractérisé en ce que la structure optiquement variable (3) comporte une couche additionnelle d'encre (46) qui est de préférence translucide et qui est disposée de manière congruente avec les zones surélevées de la structure gaufrée (4).
  19. Elément de sécurité selon une des revendications de 1 à 18, caractérisé en ce que la structure optiquement variable (3) comporte une couche de fond métallique.
  20. Elément de sécurité selon une des revendications de 1 à 19, caractérisé en ce que le revêtement (7) et/ou la couche additionnelle d'encre (46) présente au moins dans certaines zones des propriétés lisibles par machine.
  21. Elément de sécurité selon une des revendications de 1 à 20, caractérisé en ce que le revêtement (7) et/ou la couche additionnelle d'encre (46) présente des propriétés magnétiques, électroconductrices ou luminescentes.
  22. Elément de sécurité selon une des revendications de 1 à 21, caractérisé en ce qu'une couche supplémentaire translucide optiquement variable ou un élément de film est disposé sous ou sur la structure optiquement variable (3).
  23. Elément de sécurité selon une des revendications de 1 à 22, caractérisé en ce que la structure gaufrée (4) est subdivisée en zones partielles dans lesquelles différentes structures gaufrées partielles sont disposées.
  24. Elément de sécurité selon la revendication 23, caractérisé en ce que les structures gaufrées partielles sont disposées de manière décalée d'une fraction, notamment d'un tiers de pas de trame, dans au moins deux zones partielles contiguës.
  25. Elément de sécurité selon une des revendications 23 ou 24, caractérisé en ce qu'au moins les structures gaufrées partielles d'une zone partielle présentent un contour marginal non gaufré.
  26. Support de données (1) comprenant un élément de sécurité selon une des revendications de 1 à 25.
  27. Support de données (1) selon la revendication 26, caractérisé en ce que le support de données (1) est un papier-valeur, notamment un billet de banque.
  28. Utilisation d'un élément de sécurité selon une des revendications de 1 à 25 ou d'un support de données (1) selon la revendication 26 ou 27 pour sécurisation de produits.
  29. Procédé de fabrication d'un élément de sécurité comportant une structure optiquement variable (3) qui présente une structure gaufrée (4) et un revêtement (7), la structure gaufrée (4) et le revêtement (7) étant combinés de telle manière qu'au moins des parties du revêtement (7) sont entièrement visibles lors d'une observation à la verticale mais sont dissimulées dans l'ombre lors d'une observation en biais, un substrat (44, 100) étant pourvu d'une structure gaufrée (4) qui présente des éléments gaufrés surélevés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes, et des primitives de motifs (8, 9, 12, 13) du revêtement (7) étant disposées au moins partiellement de telle façon sur des bords des éléments gaufrés (5, 11, 15, 17, 18, 21, 24, 25, 26) que, quand la direction d'observation change, différentes informations deviennent visibles dans la structure optiquement variable (3), caractérisé en ce que la structure gaufrée (4) est créée de telle sorte qu'une information supplémentaire est placée dans la structure optiquement variable (3), ladite information étant créée par variation de la forme, de la taille, de la hauteur ou par variation, par des effets d'ombre, de la disposition des éléments gaufrés (5, 11, 15, 17, 18, 21, 24, 25, 26) n'ayant pas la forme de lignes.
  30. Procédé selon la revendication 29, caractérisé en ce que le revêtement (7) est imprimé sur le substrat (44, 100).
  31. Procédé selon la revendication 30, caractérisé en ce que l'impression (7) est générée par impression à plat telle que p.ex. procédé offset, par impression en relief telle que p.ex. imprimerie ou procédé de flexographie, par sérigraphie, par impression en creux telle que p.ex. photogravure ou par impression en creux par gravure, ou par un procédé de thermographie tel que par exemple par le procédé de thermotransfert.
  32. Procédé selon une des revendications de 29 à 31, caractérisé en ce que la structure gaufrée (4) est générée au moyen d'un outil de gaufrage.
  33. Procédé selon une des revendications de 29 à 31, caractérisé en ce que la structure gaufrée (4) est générée par impression en creux par gravure.
EP05791307A 2004-08-13 2005-08-11 Support de donnees ayant une structure optiquement variable Active EP1779335B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL05791307T PL1779335T3 (pl) 2004-08-13 2005-08-11 Nośnik danych z optycznie zmienną strukturą
EP10172219.7A EP2284805B1 (fr) 2004-08-13 2005-08-11 Support de données ayant une structure optiquement variable

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004039595 2004-08-13
DE102005011612A DE102005011612A1 (de) 2004-08-13 2005-03-14 Datenträger mit einer optisch variablen Struktur
PCT/EP2005/008758 WO2006018232A1 (fr) 2004-08-13 2005-08-11 Support de donnees ayant une structure optiquement variable

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP10172219.7A Division EP2284805B1 (fr) 2004-08-13 2005-08-11 Support de données ayant une structure optiquement variable
EP10172219.7 Division-Into 2010-08-06

Publications (2)

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EP1779335A1 EP1779335A1 (fr) 2007-05-02
EP1779335B1 true EP1779335B1 (fr) 2010-10-27

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EP05791307A Active EP1779335B1 (fr) 2004-08-13 2005-08-11 Support de donnees ayant une structure optiquement variable
EP10172219.7A Active EP2284805B1 (fr) 2004-08-13 2005-08-11 Support de données ayant une structure optiquement variable

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US (1) US8100436B2 (fr)
EP (2) EP1779335B1 (fr)
CN (1) CN1989529B (fr)
AT (1) ATE486335T1 (fr)
CA (1) CA2577246C (fr)
DE (2) DE102005011612A1 (fr)
ES (1) ES2355267T3 (fr)
HK (1) HK1105559A1 (fr)
MY (1) MY165395A (fr)
PL (2) PL2284805T3 (fr)
RU (1) RU2395842C2 (fr)
WO (1) WO2006018232A1 (fr)

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ATE486335T1 (de) 2010-11-15
WO2006018232A1 (fr) 2006-02-23
PL2284805T3 (pl) 2022-08-01
CA2577246C (fr) 2013-03-12
PL1779335T3 (pl) 2011-07-29
US20070246932A1 (en) 2007-10-25
DE102005011612A1 (de) 2006-02-23
EP2284805B1 (fr) 2022-05-25
HK1105559A1 (en) 2008-02-15
DE502005010446D1 (de) 2010-12-09
ES2355267T3 (es) 2011-03-24
US8100436B2 (en) 2012-01-24
CN1989529A (zh) 2007-06-27
EP1779335A1 (fr) 2007-05-02
MY165395A (en) 2018-03-21
EP2284805A3 (fr) 2011-12-07
RU2395842C2 (ru) 2010-07-27
CN1989529B (zh) 2012-11-07
RU2006145356A (ru) 2008-10-27
EP2284805A2 (fr) 2011-02-16
CA2577246A1 (fr) 2006-02-23

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