EP1986867B1 - Élément de sécurité doté d'une structure à effet optique variable - Google Patents

Élément de sécurité doté d'une structure à effet optique variable Download PDF

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Publication number
EP1986867B1
EP1986867B1 EP07703280A EP07703280A EP1986867B1 EP 1986867 B1 EP1986867 B1 EP 1986867B1 EP 07703280 A EP07703280 A EP 07703280A EP 07703280 A EP07703280 A EP 07703280A EP 1986867 B1 EP1986867 B1 EP 1986867B1
Authority
EP
European Patent Office
Prior art keywords
coating
color
line
primitives
elements
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.)
Revoked
Application number
EP07703280A
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German (de)
English (en)
Other versions
EP1986867A2 (fr
Inventor
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 Currency Technology GmbH
Original Assignee
Giesecke and Devrient GmbH
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Filing date
Publication date
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Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Priority to PL07703280T priority Critical patent/PL1986867T3/pl
Publication of EP1986867A2 publication Critical patent/EP1986867A2/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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/24—Inking and printing with a printer's forme combined with embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
    • 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
    • B42D25/40—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
    • B42D25/43—Marking by removal of material
    • B42D2033/24—
    • B42D2035/20—
    • B42D2035/44—

Definitions

  • the invention relates to a security element with an optically variable structure, which has an embossed structure with line-shaped embossing elements and a coating, wherein the embossing structure and the coating are arranged so that at least parts of the coating are completely visible when viewed vertically, but hidden by oblique view.
  • the invention further relates to a method for producing such a security element, a data carrier with such a security element and the use of such a security element or data carrier for product security.
  • optically variable security elements To protect against counterfeiting, especially with color copiers or other reproduction methods, 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 protection against counterfeiting 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 viewed obliquely the flanks provided with the lines, with oblique view of the back flanks line pattern is not recognizable. If phase jumps are present in the line grid or in the embossing grid in subregions of the embossed surface, then information can be displayed that is recognizable either only from the first oblique viewing angle or only from the second viewing angle.
  • a security element with an optically variable structure wherein the optically variable structure has an embossed structure with line-shaped embossing elements and a coating.
  • the embossed structure and the coating are arranged so that at least parts of the coating are completely visible when viewed perpendicularly, but are concealed when obliquely viewed.
  • a security element with an optically variable structure which has an embossed structure and a coating, wherein the embossing pattern is formed from non-linear embossing elements.
  • the invention has for its object to provide a security element of the type mentioned above, which avoids the disadvantages of the known generic security elements and an increased level of security against counterfeiting offers.
  • a data carrier with such a security element and a method for producing such a security element should be specified.
  • the optically variable structure of the security element according to the invention consists of a coating which is substantially completely formed from nonlinear basic elements, and an embossed structure superimposed on this coating.
  • the embossing structure has line-shaped embossing elements, which with the coating of non-linear basic elements are combined so that when changing the viewing direction different information is visible.
  • the nonlinear basic elements are characterized by the parameters outline shape, size, color and orientation and thus combined with the embossed structure that results in the shading effect according to the invention.
  • the nonlinear basic elements are thus arranged in such a way that a certain information results for a viewer in a view of the security element, which changes when the viewing direction changes.
  • a line is understood to be a combination of two points, according to the definition given in Paperback of Mathematics, Bronstein, Semendjajew, 25th edition.
  • curved, curved or spiral connection of two points in two- or three-dimensional space includes.
  • linear embossing elements are understood to mean all three-dimensional elements whose projections form a line in the plane of the optically variable element in accordance with the above definition.
  • the linear embossing elements are generally characterized by four flanks, wherein these flanks have dimensions which enable the shadowing effect according to the invention. D. h., The flanks must be dimensioned so that for the viewer who looks at such a flank, a lying behind this edge information is at least partially hidden or shadowed.
  • Non-linear basic elements are understood below to mean all elements of the two-dimensional and three-dimensional space whose outline shape is selected such that they are not linear elements in the sense of the above definition of a line. Accordingly, the nonlinear basic elements of the present application are derived from a single planar point and not from a surface connection of two points (line). In general, the non-basic elements can thus be characterized as compact, not elongated elements.
  • the coating of the optically variable structure can be so elaborate and detailed that a forgery is currently practically impossible.
  • the protection against counterfeiting is also increased according to the invention in that essentially the entire coating is formed from nonlinear basic elements. A potential counterfeiter would not only have to adjust individual areas, but the entire coating with extreme accuracy, which is currently practically impossible.
  • the choice with regard to the motifs and geometric patterns that are eligible for the coating and the freedom of design for the motifs and patterns are advantageously increased substantially, resulting in a significantly more impressive effect when the coating is suitably embossed and give visually appealing tilting effects to the viewer.
  • the authenticity of a security element according to the invention is also easily detectable by the "man or woman on the street".
  • a fake security element can be readily recognized by the fact that the dramatic optical tilting effect inherent in the authentic optically variable structure can not or only to a very limited extent be observed for a very elaborately designed coating.
  • nonlinear basic elements By using the nonlinear basic elements according to the invention, it is advantageously also possible, in connection with the generic security elements, to realize hitherto unknown tilting effects with image motifs or geometric patterns shown in true colors.
  • another advantage of the invention is that the superimposition of primitives of different color allows viewing direction dependent mixed color effects.
  • the basic elements according to the invention are characterized on the one hand by the parameter outline shape. There are all outlines conceivable that are not linear in the sense of the above definition. Although the outline of the basic elements can be varied within a very wide range, such basic elements are preferred which have a round, oval or polygonal limited outline shape.
  • Polygonal limited in the context of the present invention are all basic elements that are a polygon or polygon in the mathematical sense. Conceptually, polygons are captured in two- or three-dimensional space. Accordingly, polygons, starting with triangles to polygons with a large number of corners, conceivable. In the polygons, various squares, such as parallelograms, squares, rectangles, diamonds and trapezoids, are particularly preferred. Of course, the non-linear basic elements may also have an outline, the z. B. round or oval, is limited in other areas polygonal.
  • the line-shaped basic elements have an outline shape that is determined by a symbol, geometric pattern and / or alphanumeric character. It can be used as symbols all non-linear primitives that are accessible to the methods used for the application of the coating. In this case, for example, mathematical symbols, such as the integral or root characters, or to think of the well-known cross or double cross symbol. In addition, characters, especially alphanumeric characters, of all known fonts may be used, although characters from the standard Latin and Greek fonts are particularly preferred.
  • the outline of a basic element according to the invention by a geometric pattern, for. As the outline of a snowflake or a guilloche pattern be determined.
  • the nonlinear basic elements characterized by a certain contour shape can expediently have a filling, which is preferably embodied essentially over the whole area.
  • the filling is rasterized, z. B. in the form of a dot matrix, or that the basic element is determined only by a line defining the outline contour and thus has no filling.
  • the color of the underlying layer or layers may be recognized.
  • the size of a nonlinear basic element according to the invention is understood to mean its dimension in one or more directions. Although it may be useful for certain uses in the product fuse area, primitives with a dimension in Provide the order of a few millimeters, it is particularly preferred if the non-linear base elements have a dimension of 10 .mu.m to 500 .mu.m, in particular from 20 .mu.m to 250 .mu.m. It goes without saying that the small size of the counterfeit protection of the claimed security elements with optically variable structure is increased. Accordingly, in particular provide coatings with a dimension of the basic elements of z. B. 30 microns a very large protection against counterfeiting. At the same time, of course, the dimension of the basic elements should be provided so that this enables the production of high-quality security elements according to the invention.
  • the nonlinear basic elements according to the invention preferably have an outline shape in which the dimension in no direction is more than four times the dimension in one of the dimensions other directions of the primitive.
  • the coatings from the non-linear basic elements according to the invention may be a printing layer, in particular an offset, stitch, screen, flexographic, xerographic, inkjet or thermographic printing layer.
  • a printing layer in particular an offset, stitch, screen, flexographic, xerographic, inkjet or thermographic printing layer.
  • Each of the printed layers mentioned has certain properties, which are known per se to the person skilled in the art, depending on the method used for them. The choice of a particular print layer will therefore depend on the one hand on the intended use of color, the desired embossed structure, resolution, the intended image motif, etc.
  • the coating of nonlinear basic elements is a layer which is introduced by a laser printer or by the action of laser radiation of a laser.
  • CO 2 lasers, Nd: YAG lasers or other types of lasers in the wavelength range from ultraviolet (UV) to far infrared (IR) can be used as radiation sources, the lasers often also work with frequency doubling, tripling or even greater frequency multiplication.
  • laser sources in the near IR are preferably used, since this wavelength range fits well with the absorption properties of the materials provided for the optically variable structures.
  • the basic elements according to the invention can advantageously be produced by the use of laser radiation.
  • the continuous power of the laser used for this purpose is usually between a few watts and a few hundred watts.
  • the coating according to the invention can basically be formed from nonlinear basic elements of any arrangement. Next a completely random arrangement is thus z. As well as the arrangement - possible in the form of a fractal pattern. However, it is particularly preferred if at least a part of the non-linear base elements is arranged in a preferably periodic grid. By means of a grid-shaped arrangement of the basic elements, preferred directions of the coating are defined which, when combined with a suitable embossing structure, lead to particularly impressive tilting effects.
  • primitives of different colors may overlap and create a blend color in the overlap areas, and the arrangement of the blends in the overlap areas may in turn be a safety feature of the coating.
  • each case at least two non-linear basic elements of different color are arranged in the form of color primitives.
  • the choice of colors and the type of the basic elements of a color primitive is basically arbitrary, but preferred are colors of a primary color system.
  • color basic elements complex and detailed motifs and geometric patterns can be displayed.
  • the arrangement of the color primitives can in turn be completely random, in the form of a fractal pattern or in a combination of these two arrangement options. However, it is particularly preferred if at least a part of the color primitives is arranged in a particular periodic grid. Such an arrangement is particularly suitable for the representation of colored images and similar subjects. Of course, it is also conceivable that a larger number of color primitives is arranged in a grid and the coating has at the same time random or likewise grid-shaped, non-linear basic elements.
  • the basic elements or color primitives can be arranged in a grid with varying screen ruling, it is particularly expedient if the grid width of the grid is constant for a part or the entire coating.
  • the resulting regular arrangement defines one or more preferred directions in the plane of the coating and, in combination with a correspondingly arranged embossing structure, opens up particularly striking tilting effects for the viewer.
  • the coating of non-linear primitives or color primitives formed therefrom may contain primitives of any color. But especially preferred are basic elements in the colors of a basic color system.
  • coatings are claimed that have color primitives with non-linear primitives in the colors of a primary color system.
  • all primary color systems can be used, which enable the application of a coating for the optically variable structure with the printing techniques already described.
  • the primary color systems RGB red, green, blue
  • CMY cyan, magenta, yellow
  • CMYK cyan, magenta, yellow, key (black)
  • the optically variable structure has a multiplicity of color primitives which, when viewed vertically, represent a multicolored image motif and / or geometric pattern whose visual impression varies when the viewing angle is changed.
  • the color primitives representing the image motif or pattern may include non-linear primitives of any color or elements in the colors of a primitive color system.
  • the color primitives correspond to the pixels of the image motif and / or geometric pattern to which certain color components of a color system are assigned.
  • the basic color elements have non-linear basic elements with colored areas in the colors of the color system, the size of the colored areas of the nonlinear basic elements corresponding to the respective color proportion of the picture elements.
  • the color impression of a color primitive thus results for the viewer from the size of the areas occupied by the respective colors.
  • the surfaces can adjoin one another directly or also maintain a certain distance from one another, so that the color impression of the basic color element is ultimately also determined by the color of the light reflected from the background.
  • the true color of a color primitive as a mixed color of the non-linear primitives forming the color primitive, provided that the dimensions of the colored areas are below the visual resolution of the observer.
  • the security element it is provided that at least two rasters of nonlinear basic elements of each color form an image motif and / or geometric pattern.
  • the arrangement of the raster defines areas in which the non-linear basic elements of different rasters overlap and produce a mixed color in these areas.
  • nonlinear basic elements with a well-defined outline shape and a full-surface filling to form the grid are particularly preferred.
  • the rasters may contain primitives in the colors of a primary color system, whereby the mixed colors produced in the overlap regions are again well-defined secondary colors of a subtractive color mixture. Since the screens used generally do not cover the substrate material over the entire area, a light reflection occurs in the uncovered areas of the substrate. The reflected light and the overlapping areas of subtractive color mixing ultimately result in an additive (autotypical) color mixture perceived by the observer.
  • the regions of overlapping basic elements correspond to the image points of the image motif and / or geometric pattern to which certain colors of a color system are assigned; and the mixed color of the regions of overlapping primitives corresponds to the respective color of the pixels, such that the color impression of the image motif and / or of the geometrical pattern varies as the viewing angle changes.
  • a pixel of the subject or Pattern represented by a mixed color produced by means of subtractive color mixing.
  • the viewer ultimately also to some extent obtains additive color mixing by the light reflected by the substrate.
  • the non-linear base elements or color base elements are arranged in the form of a grid, at least one preferred direction in the plane of the coating is defined by such a regular arrangement of the base or color base elements. It is particularly preferred for the line-shaped embossing elements to be arranged at least in regions in the direction of the at least one preferred direction, so that the visual impression varies depending on the viewing direction as a result of a viewing of the regions provided with embossed structures in a direction perpendicular to the at least one preferred direction. It has been shown that with an arrangement of the embossing elements in a preferred direction of the perceptible to the viewer tilt effect is particularly pronounced when changing the viewing angle.
  • the tilting effect will be particularly impressive if different areas of the coating are provided with embossing elements, which are each arranged in a preferred direction.
  • the preferred direction itself can be caused by the outline shape and / or the arrangement of the basic elements or color primitives in the grid. Accordingly, a preferred direction can be determined by the arrangement and at the same time by the outline contour of the grid forming basic elements.
  • the optically variable structure may have additional information that arises due to variation of the coating and / or the embossed structure.
  • the additional information may be from one or more viewing directions be recognizable. It is also possible for the additional information to be transferred into a second, third, etc. additional information depending on the viewing angle.
  • the additional information can, for example, by a variation of the shape, color and / or the arrangement of non-linear primitives, such as offset, change the screen ruling, omission, reflection of individual or several non-linear primitives arise.
  • the additional information can be an optically variable element individualizing information in the coating, such. As alphanumeric characters or barcodes have.
  • the inventive optically variable structure of the security elements may include line-shaped embossing elements of any arrangement, it is particularly preferred if the embossing elements are arranged in the form of an embossing grid with a screen pitch.
  • the grid width of the embossed structure can correspond to the grid width of the coating grid.
  • the grid widths of the coating and the embossed structure are not identical but shifted by a certain value, interesting viewing direction-dependent beat effects result.
  • the additional information also by a variation of the shape, size, height and / or the arrangement of the line-shaped embossing elements, such as offset, change the screen width, omission of individual or several line-shaped embossing elements arise.
  • the additional information by varying the embossed structure is reinforced by a simultaneous variation of the coating.
  • the optically variable structure is subdivided into partial regions in which different partial embossing structures and / or partial coatings are arranged. If the line-shaped embossing elements of the embossed structure or the non-linear base elements are arranged in the form of a grid with a screen ruling, an expedient embodiment results from the fact that the subareas structures or sub-coatings in at least two adjoining sub-areas by a fraction, in particular one third of the screen, are arranged offset. In addition, parts of the partial embossing structures may have an unembossed edge contour for better visibility.
  • 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 and authenticity features, such.
  • Such layers and elements can be superimposed or underlaid optically variable structures.
  • the coating combined with the line-shaped embossing elements can also be such a metallic layer, a metallic effect layer or an optically variable layer.
  • 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 very advantageous in the field of Product protection can be used.
  • the optically variable structure or the security element can be applied to corresponding labels or packaging or the product itself.
  • paper is used as the 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 materials are suitable.
  • an arbitrary substrate is preferably first provided with the coating of nonlinear basic elements, and subsequently the embossed structure is produced in register with this coating.
  • the coating is preferably printed or transferred by thermal transfer to the substrate.
  • the coating can in any printing process, such as in planographic printing, z. B. in the offset process, in high pressure, z. B. in letterpress or flexographic printing, screen printing, gravure, z. As in gravure or gravure printing, or be produced in a thermography process.
  • the coating can preferably also be produced by a laser printer or by the action of laser radiation.
  • 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 also be produced in the 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, brass, steel, nickel or the like can 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.
  • 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 application of the coating before embossing has the advantage that the coating exclusively on the flanks of the embossing elements or only in the zenith / amplitudes of the embossing elements can be arranged. As a result, particularly spectacular shading effects can be achieved.
  • the separation of the process steps embossing and application of the coating opens up a much greater degree of design freedom ,
  • a process control in which the coating is first arranged on the substrate and then the embossed structure is produced with a high registration accuracy, allows the already mentioned, selective arrangement of the coating exclusively on the flanks of the embossing elements, while the zenith / amplitudes of the embossing elements no coating exhibit.
  • the Fig.1 shows a data carrier 1 according to the invention 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 used according to the invention as a so-called human feature, ie as a testable by humans without aids feature, in addition to optionally other features for determining the authenticity of the disk.
  • the provision of such features is particularly useful for banknotes, but also for other monetary documents, such as stocks, checks and the like.
  • Come as a data carrier in the context of the invention 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, the printing or other means, such as by a transfer process or by the action of laser radiation , is produced.
  • 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. In addition, the imitation will usually fail due to the low resolution of the reproductive devices.
  • the embodiments described in the following examples are reduced to the essential core information for ease of understanding. In practice, much more complex patterns or images in single or multi-color printing can be used as a coating. The same applies to the embossed structures.
  • the information presented in the following examples can also be replaced by arbitrarily complex image or text information.
  • the generation of the coating z. B. as a print usually uses the possibilities of printing technology. Typical dimensions of non-linear basic elements from approx. 10 ⁇ m are used.
  • the line-shaped embossing elements that form the embossed structure, as a rule have an embossing height in the range of 10 .mu.m to 250 .mu.m, preferably from 50 .mu.m to 120 .mu.m.
  • the various embodiments are not limited to use in the form described, but can be combined to increase the effects with each other.
  • Fig. 2 shows a schematic sectional view along the line AA (see Fig. 1 ) and in conjunction with the FIGS. 3 and 4 an optically variable structure in which the embossing structure 4 of regularly arranged, uniform, line-shaped embossing elements 5 is formed, that is formed as a periodic line grid.
  • the line-shaped embossing elements 5 are provided with a coating 7, which is designed as a multi-colored arrangement of non-linear base elements.
  • the individual color surfaces of the non-linear base elements lie on the flanks of the line-shaped embossing elements.
  • the formation of the line-shaped embossing elements 5 as elevations, which are preferably produced by embossing of the data carrier, can be clearly seen in the sectional view on the upper side 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 back of the data carrier will not have such a pronounced embossing pattern.
  • only the upper or front side of the data carrier essential for the understanding of the invention will be described, as it is perceived by the observer during a view from the viewing direction AU.
  • the deformation of the lower or rear is not essential to the invention, but only a by-product of special embossing techniques, such. B. the intaglio printing. However, it can serve as another authenticity feature.
  • the coating 7 according to the invention is in the FIGS. 3 and 4 shown in more detail.
  • the coating 7 is formed from regularly arranged in the form of a grid, non-linear basic elements 8 and 13.
  • the elements 8 and 13 have different colors, which is symbolized by the different filling of the basic elements 8 and 13 forming circles.
  • the basic elements shown with round outline form are two further outline shapes of the basic elements in FIG Fig. 4 shown.
  • the outline of the basic elements 13 is that of a symmetrical cross, whereas the outline of the elements 8 corresponds to a star, which can also be regarded as a special tooth toe.
  • the basic elements 8 and 13 of Fig. 4 are arranged in a grid shape.
  • a line-shaped embossing element of the embossed structure can be arranged so that, as a result, the in Fig. 2 shown in cross-section structure of coating 7 and embossed structure 4 results, if the basic elements 8, 13 are embossed with the embossing element 5 so that they come to lie approximately symmetrically to the center of the embossing element.
  • the coating 7 in Fig. 5 has basic elements 8, 9 of different color, the outline shape of which corresponds to a symmetrical "L".
  • the basic elements 8 and 9 are arranged in a regular grid such that in each case a basic element 8 is combined with a basic element 9.
  • the basic elements 8 and 9 thus form in pairs each a basic color element 52, which will be discussed in more detail.
  • the coating 7 consists of regularly arranged, non-linear Basic elements 8, 9 and 13, each having the outline of an arch element.
  • the basic elements assume the positions of a grid with a constant screen ruling.
  • the basic elements as in the FIGS. 7 and 8 shown, have an outline that is complementary to the outline of an adjacently arranged primitive such that there is a substantially full-surface coating 7.
  • the elements can also be arranged in the same outline shape that results in additional information in the coating, as in Fig. 8 is shown.
  • FIG. 9 an embossed structure 4 is shown, which consists of three line-shaped embossing elements 5 with triangular cross-section. Each embossing element 5 has four flanks which rise above the plane formed by the substrate. The extending in the longitudinal direction of the linear embossing element 5 flanks are in Fig. 9 designated by the reference numerals 5a and 5b, while the two existing at the ends of the embossing element 5 flanks are provided with the reference numerals 5c and 5d.
  • the grid width of the arrangement of the line-shaped embossing elements 5 underlying grid is denoted by x.
  • a coating 7 is shown, which in combination with the embossed structure of Fig. 9 in the Fig. 11 shows optically variable structure results.
  • the coating 7 consists of two types of non-linear basic elements with different outline and different color.
  • the basic elements 8 have a polygonal outline shape in the form of a rectangle.
  • each basic element 9 has the outline shape a square and about half the area of the surface of a base element 8.
  • the basic elements 8 and 9 are arranged at regular intervals on the positions of a grid. In each case a basic element 8 and 9 together form a color base element 52 which is arranged in a grid cell 12.
  • the grid width x of the coating 7 corresponds to the grid width x of the embossed structure 4 of FIG Fig. 9 ,
  • a substrate provided with the coating 7 is in the exact register with the embossed structure 4 Fig. 9 provided, the combined structure results Fig. 11 , While in a vertical view on the in Fig. 11 structure shown, the entire coating 7 is visually detectable, in principle, only the grid-like arrangement of the non-linear base elements 9 on the flanks 5b of the embossing elements 5 can be perceived in an oblique view from direction B. Conversely, only the basic elements 8 on the flanks 5 a of the linear embossed elements 5 can be seen from the viewing direction C. At the in Fig.
  • Fig. 12 is one opposite the in Fig. 9 shown structure varied embossed structure 4 shown. It comprises a line-shaped embossing element 5, which extends along a first preferred direction 16. Perpendicular to this, three further line-shaped embossing elements 15 are arranged along a second preferred direction 17.
  • the grid width of the embossing element 5 is x
  • the grid width of the stamping elements 15 is y. In the present case, the screen widths x and y are the same size.
  • a coating 7 according to the invention is shown, which is formed by a grid-shaped arrangement of the non-linear base elements 8 and 9, wherein both basic elements have a rectangular outline shape and different colors.
  • the basic elements 8 and 9 in turn form a basic color element 52, which is arranged in a grid cell 12.
  • the combination of the embossed structure 4 Fig. 12 and the coating 7 Fig. 13 gives the in Fig. 14 Perspective shown combined structure.
  • the observation from the directions B and C this time provides a completely different picture as in Fig. 11 because the line-shaped embossing elements 5 and 15 are arranged along two preferred directions. From the direction C, only the base elements 8 arranged on the flanks 5a can be seen from the direction B, the base elements 9 arranged on the flanks 5b, provided they are not shadowed by respectively adjacent embossing elements.
  • the in the FIGS. 15 and 16 illustrated coating 7 comprises three types of different colored and non-linear basic elements 8,13 and 39, which are each arranged in the form of a grid with a constant screen ruling.
  • a base element 8, 13 and 39 are printed on the substrate, not shown further, that they form a color base 52.
  • the color base elements 52 are also arranged in the form of a regular grid with a constant screen ruling.
  • a color base element 52 lies in a grid cell 12 of the grid.
  • the resulting array of color primitives 52 is divided into three subregions A, B and C in the illustrated preferred embodiment.
  • Each subarea is provided with an embossed structure 4, not shown, of linear embossing elements 5.
  • the alignment of the embossed structure 4 takes place in each subarea parallel to the preferred directions of the grid, wherein in Fig. 16 for each area A, B and C only one preferred direction is drawn and used to align the embossed structure.
  • the embossing results in the FIGS. 15 and 16 shown coating 7 a viewing direction-dependent optically variable effect. While the entire coating 7 can be perceived by a viewer in supervision, interesting tilting effects arise for any other oblique viewing directions, which are different for the individual areas A, B and C, since the embossed structures each have different orientations in these areas.
  • the in the FIGS. 17a and 17b illustrated coating 7 is formed from three round primitives 8, 9 and 13 different color, which in turn define a color primitive 52 in a grid cell 12 of a regular grid.
  • the preferred directions are 16,18 and 19 located and the embossed structures 64 along the preferred directions shown schematically.
  • the cross-section of the linear embossing elements is triangular and corresponds to the in Fig. 34a illustrated cross-section.
  • the embossing structure 64 has amplitudes or zeniths 20 and intermediate valleys 21. Accordingly, the non-linear base elements 8 and 9 come to lie on a flank of the non-linear embossing element at a stamping of the coating 7 along the preferred direction 16, while the elements 13 come to rest on the other edge of the element.
  • a mixed color element which can be recognized in supervision results for a basic color element 52 defined by the basic elements 8, 9 and 13.
  • the viewer perceives a mixed color resulting from the mixed color of the color base member 52 and the color of the substrate surface on which the coating is disposed, depending on the area coverage of the color base 52 in the grid cell 12.
  • a vertical view In various directions, in the region of the linear embossing along the direction 16 on a flank of the embossing element, a mixed color resulting from the colors of the base elements 8, 9 and the color of the substrate surface is observed.
  • the mixed color of the color of the base elements 13 and the color of the background is perceived from a direction opposite to this viewing direction. It is off Fig. 17b it can be seen that changes in an embossing along the preferred direction 19 resulting for the individual edges of the embossing element mixed color. In this case, when considering an edge, a mixed color results from the colors of the primitives 8, 9 and 13 and the color of the background.
  • the perceived mixed color of the opposite flank is defined by the color of the differently spaced elements 8, 9 and 13 and the color of the ground.
  • a further coating 7 according to the invention is shown, are arranged in the triangular basic elements 8, 9 and 13 in the form of a larger regular triangle.
  • the arrangement of the basic elements 8, 9 and 13 in turn defines a color primitive in each grid cell 12 of a grid.
  • Opposite the in Fig. 17a illustrated color primitives 52 are the color primitives of Fig. 18a through a larger area coverage of the subsoil. Consequently, the color impression, which can be perceived by the viewer in a plan view of a grid cell, is determined to a greater extent by the inherent color of the triangular basic elements 8, 9 and 13 or of the color base element.
  • these basic elements in the plane of the coating 7 again define preferred directions, which are denoted by the reference numerals 16, 18 and 19 in FIG Fig. 18b are shown. If an embossing along these preferred directions with an embossed structure with a pointed profile, z. B. the profile Fig. 34a, 34b or 34f , resulting in color shift effects with extremely pronounced viewing direction dependence. If, for example, the colors of the primary color system CMY are used for the basic elements 8, 9 and 13, a substantially resulting for the coating 7 in plan view gray mixed color for the color primitives 52, which by a z. B. white color of the substrate is brightened a bit more.
  • FIGs 18c and 18d a further variant of the coating 7 according to the invention is shown.
  • the non-linear basic elements 8, 9 and 13 in turn form a basic color element 52 in a grid cell 12 of a regular grid.
  • the triangular basic elements 8, 9 and 13 have the colors of a primary color system, for example those of the primary color system CMY.
  • the triangles 8 have the color cyan, the triangles 9 the color magenta and the triangles 13 the color yellow.
  • Fig. 18c In contrast to the coating grid of Fig. 18a includes the coating 7 Fig. 18c two grids in the horizontal direction (direction 16 in Fig. 18d ) are arranged offset. How out Fig. 18c As can be seen, the color primitives 52 of the first and third lines of the coating shown belong to a grid, while the color primitives 52 of the second row are arranged in the grid cells 62 of the second grid. In this case, the grid cells 62 are offset from the grid cells 12 of the first grid by half the grid width in the horizontal direction 16.
  • the arrangement of a line-shaped embossing element along the preferred direction 18 results in a viewing direction-dependent perception, wherein a flank of the embossing element due to the there exclusively arranged magenta triangles perceives a lightened by the color of the substrate color magenta.
  • a flank of the embossing element due to the there exclusively arranged magenta triangles perceives a lightened by the color of the substrate color magenta.
  • the other flank of the embossing element results in a mixed color of the color of the substrate and the colors yellow and cyan of the basic elements 13 and 8 respectively.
  • Fig. 19 is one of the in the Figures 18a and 18b reproduced coating similar coating 7 shown.
  • the arrangement of the basic elements 8, 9 and 13 of a color base element 52 differently than in the other grid cells 12.
  • the grid cells with a changed arrangement of the elements are provided with the reference numeral 22 and ultimately form additional information within the coating.
  • this additional information can be perceived in supervision and from certain directions. It represents an additional security feature inherent in the coating 7 according to the invention.
  • Fig. 20 is a section of the print image area 2 of the data carrier 1 of Fig.1 reproduced image motif. It can be with non-linear primitives of a color, z. B. black, arrange on a substrate.
  • an embossed structure is provided, which runs in certain areas of the coating in a certain direction. An example of this is for the eye area of the picture motif in Fig. 25 shown.
  • the image section can also be done by grid-shaped, non-linear primitives that have one or more outline shapes and one or different colors.
  • the basic elements 39 are substantially completely filled in the region of the hair of the person depicted, whereas the basic elements 39 in the region of the forehead are circular rings, in the center of which the color of the substrate, e.g. B. white, can be perceived.
  • the color of the primitives can be varied for each image area.
  • FIGS. 20 and 21 show with a coarser grid of basic elements 13.
  • two arcuate or circular segment-like basic elements 13 are arranged in a regular grid.
  • the image detail can be reproduced with sufficient contrast.
  • two basic elements 13 of different color are arranged to a color base element and for a particular color basic elements in supervision a mixed color results, which is derived from the color of the basic element pair and recognizable in a grid cell from the ground color.
  • coatings of the invention shown are provided with suitable embossing structures, in turn, different orientations of the embossing elements are provided in individual image areas.
  • a picture motif with rectilinear sections defines a plurality of preferred directions (see Fig. 26 with the preferred directions 16 to 19), can also be used for the image areas of FIGS. 21 and 22 find distinctive preferential directions, as this is based on Fig. 25 is shown by way of example.
  • FIGS. 23 and 24 The interaction of color primitives and line embossing structure to achieve impressive color shift effects with mixed colors is based on the FIGS. 23 and 24 described in detail.
  • illustrated coating 7 according to the invention may be a greatly enlarged section of the image of the Fig. 21 act.
  • Non-linear basic elements 8, 9 and 13, each of a different color, are arranged in the form of a grid with constant screen rulings x and y.
  • one basic element 8, 9 and 13 form a basic color element 52, which is arranged in a grid cell 12 of the grid.
  • Each color primitive 52 corresponds to exactly one pixel of a colored image motif, e.g. B. the in Fig. 21 illustrated motif.
  • Each pixel of the image motif is assigned a specific color component of a color system.
  • the basic color system CMY is used.
  • the primitives 8, 9 and 13 of each color base 52 of the coating 7 have the colors cyan, magenta and yellow.
  • the color component of a pixel is determined by the size of the colored areas of the primitives 8, 9 and 13.
  • the human eye because of its limited resolution, can not perceive the basic elements separately from one another, and therefore, when viewing the coating 7, only recognizes the mixed color of each color base element 52 defined by the colored surfaces of the basic elements.
  • a color primitive 52 can also be readily designed to substantially completely cover the surface of a halftone cell 12, whereby only the mixed color of the color primitive 52 determines the color of a pixel of the image motif.
  • the size of the colored area of a primitive is varied so that the color proportion of each primer 52 is accurately determined.
  • an image motif to be displayed results in a color that is precisely defined for each individual pixel.
  • the interaction of such a coating with line-shaped embossing elements leads to an optically variable structure according to the invention, as described in US Pat Fig. 24 is reproduced.
  • the embossed structure 4 comprises linear embossed elements 5 and 15, the former along the preferred direction 16, the latter along the preferred direction 17 are arranged.
  • the grid width x and y of the line-shaped embossing grid 5 and 15 corresponds exactly to the grid widths x and y of the coating 7.
  • FIGS. 27 to 29 show a further variant of an optically variable structure according to the invention, in which tilting effects as well as mixed color effects generated by the overlapping of basic elements are combined with each other.
  • Fig. 27 an embossed structure 4 with line-shaped embossing elements 15 is shown.
  • the embossing elements 5 and 15 of the Fig. 27 the in Fig. 34g or 34f shown cross section.
  • a coating 7 according to the invention is shown, which with the embossed structure 4 of Fig. 27 is combined into an optically variable structure.
  • the coating 7 is formed from three types of non-linear base elements 8, 9 and 13, which are each arranged in the form of a regular grid. According to the grids formed by the basic elements 8 and 9, basic elements with a filling and thus a large area coverage of the grid for this coating variant are particularly well suited. In addition, in principle, other basic elements, such as the alphanumeric characters 13, are used. It is off Fig. 28 It can be seen that the arrangement of the basic elements and thus of the grid defines the preferred directions 16 and 17.
  • the coating grid 7 also has a grid width x in the direction 17 and a screen width y in the direction 16 which corresponds to the screen widths of the embossed pattern 4 Fig. 27 equivalent.
  • the basic elements of a grid have a certain color, z. For example, the colors red, green, and blue of the RGB primary color system. In the areas defined by the arrangement of the grid overlap the basic elements of the differently colored grid and form a defined mixed color in these areas.
  • the coating 7 thus appears in plan view as a superimposition of differently colored rasters which have a mixed color in the areas of overlap.
  • the arrangement of the overlapping areas corresponds to the picture elements of an image motif or of a geometric pattern, so that the image motif or pattern can be seen in a grid of basic colors corresponding to the mixed colors when viewed from above.
  • Fig. 27 This results in an optically variable structure, which reveals in plan view the coating described above and from other viewing directions, the color structures dependent on the embossed structure 4.
  • FIGS. 29a to 29c further coating grids 7 according to the invention are shown.
  • the nonlinear basic elements which form a grid are not shown individually, although these are similar to those in FIG Fig. 28 spaced from each other are arranged in a grid.
  • the grid formed from the basic elements do not intersect at right angles, so that there are three preferred directions 17, 37 and 47 for a possible arrangement of the embossed structure.
  • the arrangement of the raster in turn results in overlapping areas of the basic elements of different rasters, so that the coating 7 produces a complicated structure of pixels with mixed colors and the pure colors of the basic elements in plan view.
  • the arrangement of the grid is so precise on the ground that the arrangement of the mixed color areas in itself constitutes a security feature that is combined with the caused by the embossing pattern tilting effect.
  • Fig. 29b is the coating grid 7 off Fig. 29a shown in a variant.
  • a colorless area 39 was inserted around the grid formed by the basic elements 9. This results in a dependence of the arrangement of the basic elements 13 of the white areas 39 and the basic elements 9. The resulting spatial dependence of the basic elements 9 of basic elements of other grid and the inserted areas 39 provides an additional security feature of the coating. 7
  • Fig. 29c a further variant of a coating grid 7 is shown with mixed color effects.
  • an area 38 has been added around the grid formed by the primitives 8, resulting in a division of the grids formed from the primitives 9 and 13.
  • the spatial dependence of the basic elements on the basic elements of other rasters is an additional security feature that is currently difficult to follow.
  • resulting from coating 7 of Fig. 29c Overlapping areas with mixed colors, which lead to viewing direction-dependent tilting effects by arranging an embossing structure.
  • coating 7 consists of elliptical basic elements 8, 9 and 13 of different colors.
  • a direction 47 is shown which does not correspond to a preferred direction of the coating grid. If the arrangement of the line-shaped embossing elements along this direction, a tilting effect results from viewing directions that do not match the preferred directions of the coating grid. Is the coating 7 arranged in the direction of 47 embossing structure in a further coating 7 is integrated, in which the embossing takes place along one of the preferred directions of the coating 7, the imaged area of the Fig. 30 an additional information within the entire coating.
  • FIG. 31 32 are cross sections of embossed structures shown in which additional information 40 is included.
  • the additional information 40 is generated by a change in the grid width of the stamping grid.
  • the additional information in the embossed structure of the Fig. 32 by a change of the cross section of the linear embossing elements from circular to triangular.
  • the additional information of the coating can also be easily arranged in a stamping structure designed for this purpose, as is shown by the example of the structure of FIG Fig. 33 is apparent.
  • the embossed structure of a triangular cross section has amplitudes 20 and a relatively large grid width, so that base regions 31 remain between the individual line-shaped embossing elements, which can be provided with the additional information of the coating.
  • the additional information introduced there is visible in plan view and from certain viewing directions and shows a tilting effect inherent to the optically variable structure according to the invention.
  • Fig. 34 Different cross-sections of line-shaped embossing elements are shown. It should be noted that also cross sections are possible, which represent a combination of the cross sections shown. Also, the flanks of the cross section, z. B. the Fig. 34m be concave.
  • 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 Figures 35a and 35b shown.
  • the Fig. 35a shows a data carrier according to the invention in cross section before the embossing process.
  • the data carrier substrate 10 is first with a background layer 29 z. B. printed over the entire surface.
  • the coating of base elements 26, 27 is applied.
  • the background layer 29 may also be in the form of information and patterns. It is also possible to use special printing inks which further increase the counterfeit protection 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. 35b 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 with basic elements 26, 27 comes to rest on the flanks of the embossed structure.
  • the substrate 29 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. In this case, metallic pattern elements or coatings can be applied in the transfer process.
  • the Fig. 36a shows the structure before embossing with substrate 10 and coating 26, 27.
  • the situation is shown after the coinage.
  • the Indian Fig. 36b The structure shown was ink-carrying embossed, so that congruent to the embossing is a color layer 30 is present. The additional color layer 30 comes to lie as the uppermost layer, since this embossing was carried out here as the last process step.
  • an at least translucent color is used for the color layer 30.
  • 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 30.

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Claims (15)

  1. Elément de sécurité doté d'une structure à effet optique variable (3) qui présente une structure en relief (4) avec des éléments en relief linéaires (5, 15) et un revêtement (7), la structure en relief (4) et le revêtement (7) étant agencés de sorte qu'au moins certaines parties du revêtement (7) soient entièrement visibles lorsqu'on les observe à la verticale, mais cachées lorsqu'on les observe de biais, caractérisé en ce que le revêtement (7) est sensiblement dans son ensemble formé d'éléments de base non linéaires (8, 9, 13, 26, 27, 39), qui sont caractérisés par les paramètres que sont la forme de contour, la dimension, la couleur et l'orientation, et combinés avec la structure en relief (4) de manière à rendre visibles différentes informations en cas de changement de la direction d'observation.
  2. Elément de sécurité selon la revendication 1, caractérisé en ce que les éléments de base non linéaires présentent une forme de contour ronde, ovale et/ou polygonale, notamment triangulaire, carrée ou rectangulaire.
  3. Elément de sécurité selon la revendication 1, caractérisé en ce que les éléments de base non linéaires présentent une forme de contour définie par un symbole, un motif géométrique et/ou un caractère alphanumérique.
  4. Elément de sécurité selon au moins une des revendications 1 à 3, caractérisé en ce que les éléments de base non linéaires présentant un remplissage sensiblement sur toute la surface.
  5. Elément de sécurité selon au moins une des revendications 1 à 4, caractérisé en ce que les éléments de base non linéaires présentent une dimension comprise entre 10 µm et 500 µm, en particulier entre 20 µm et 250 µm, la dimension d'un élément de base non linéaire n'étant dans aucune direction supérieure au quadruple de la dimension dans une des autres directions.
  6. Elément de sécurité selon au moins une des revendications 1 à 5, caractérisé en ce que le revêtement formé d'éléments de base non linéaires est une couche d'impression, notamment une couche d'impression offset, héliographique, sérigraphique, flexographique, xérographique, par jet d'encre ou thermographique, ou une couche appliquée par une imprimante laser ou sous l'effet d'un rayonnement laser.
  7. Elément de sécurité selon au moins une des revendications 1 à 6, caractérisé en ce qu'au moins une partie des éléments de base non linéaires est agencée dans une trame.
  8. Elément de sécurité selon au moins une des revendications 1 à 7, caractérisé en ce qu'au moins deux éléments de base non linéaires de couleurs différentes, en particulier de couleurs différentes d'un système de couleurs primaires, sont respectivement agencés sous forme d'éléments chromatiques de base, au moins une partie des éléments chromatiques de base étant de préférence agencée dans une trame.
  9. Elément de sécurité selon la revendication 7 ou 8, caractérisé en ce que la trame des éléments de base ou des éléments chromatiques de base présente une finesse de trame constante.
  10. Elément de sécurité selon au moins une des revendications 8 ou 9, caractérisé en ce que la structure à effet optique variable présente une pluralité d'éléments chromatiques de base formant un motif graphique à plusieurs couleurs et/ou un motif géométrique lorsqu'on les observe à la verticale, dont l'effet visuel varie en cas de modification de l'angle d'observation.
  11. Elément de sécurité selon au moins une des revendications 1 à 10, caractérisé en ce que la structure à effet optique variable présente une information complémentaire créée par variation du revêtement, en particulier par variation de la forme, de la couleur et/ou de la disposition des éléments de base non linéaires, telle que décalage, modification de la finesse de trame, suppression, réflexion d'un ou de plusieurs éléments de base non linéaires, ou par disposition d'une information individualisant l'élément à effet optique variable, telle que caractères alphanumériques ou codes-barres, et/ou par variation de la forme, de la dimension, de la hauteur et/ou de la disposition des éléments en relief linéaires, telle que décalage, modification d'une finesse de trame, suppression d'un ou de plusieurs éléments en relief non linéaires.
  12. Support de données comportant un élément de sécurité selon l'une des revendications 1 à 11, ledit support de données étant de préférence un papier de valeur, en particulier un billet de banque.
  13. Procédé de fabrication d'un élément de sécurité doté d'une structure à effet optique variable (3) qui présente une structure en relief (4) avec des éléments en relief linéaires (5, 15) et un revêtement (7), la structure en relief (4) et le revêtement (7) étant agencés de sorte qu'au moins certaines parties du revêtement (7) soient entièrement visibles lorsqu'on les observe à la verticale, mais cachées lorsqu'on les observe de biais, caractérisé en ce qu'un substrat est doté d'éléments de base non linéaires, qui forment le revêtement (7) sensiblement dans son ensemble et qui sont caractérisés par les paramètres que sont la forme de contour, la dimension, la couleur et l'orientation, et en ce que lesdits éléments de base non linéaires (8, 9, 13, 26, 27, 39) sont combinés avec la structure en relief (4) de manière à rendre visibles différentes informations en cas de changement de la direction d'observation.
  14. Procédé selon la revendication 13, caractérisé en ce que les éléments de base non linéaires sont imprimés sur le substrat et/ou générés sous l'effet d'un rayonnement laser, l'impression ou l'application sur le substrat des éléments de base non linéaires étant préférentiellement effectuée avant de générer la structure en relief.
  15. Procédé selon au moins une des revendications 13 ou 14, caractérisé en ce que la structure en relief est générée par héliographie, une autre couche de couleur agencée de manière à coïncider avec les zones proéminentes de la structure en relief étant imprimée sur le substrat de préférence simultanément à l'application de la structure en relief.
EP07703280A 2006-02-13 2007-02-05 Élément de sécurité doté d'une structure à effet optique variable Revoked EP1986867B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07703280T PL1986867T3 (pl) 2006-02-13 2007-02-05 Element zabezpieczający o zmiennej strukturze optycznej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006006501A DE102006006501A1 (de) 2006-02-13 2006-02-13 Sicherheitselement mit einer optisch variablen Struktur
PCT/EP2007/000970 WO2007093300A2 (fr) 2006-02-13 2007-02-05 Élément de sécurité doté d'une structure à effet optique variable

Publications (2)

Publication Number Publication Date
EP1986867A2 EP1986867A2 (fr) 2008-11-05
EP1986867B1 true EP1986867B1 (fr) 2011-08-10

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EP07703280A Revoked EP1986867B1 (fr) 2006-02-13 2007-02-05 Élément de sécurité doté d'une structure à effet optique variable

Country Status (8)

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EP (1) EP1986867B1 (fr)
CN (1) CN101421118B (fr)
AT (1) ATE519606T1 (fr)
CA (1) CA2642330C (fr)
DE (1) DE102006006501A1 (fr)
PL (1) PL1986867T3 (fr)
RU (1) RU2417897C2 (fr)
WO (1) WO2007093300A2 (fr)

Cited By (1)

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RU2417897C2 (ru) 2011-05-10
WO2007093300A2 (fr) 2007-08-23
ATE519606T1 (de) 2011-08-15
DE102006006501A1 (de) 2007-08-16
PL1986867T3 (pl) 2012-01-31
RU2008136571A (ru) 2010-03-27
EP1986867A2 (fr) 2008-11-05
CA2642330C (fr) 2014-05-13
WO2007093300A3 (fr) 2007-11-15
CN101421118A (zh) 2009-04-29
CA2642330A1 (fr) 2007-08-23

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