EP1317351B1 - Support de donnees dote d'un element optiquement variable - Google Patents

Support de donnees dote d'un element optiquement variable Download PDF

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Publication number
EP1317351B1
EP1317351B1 EP01982255A EP01982255A EP1317351B1 EP 1317351 B1 EP1317351 B1 EP 1317351B1 EP 01982255 A EP01982255 A EP 01982255A EP 01982255 A EP01982255 A EP 01982255A EP 1317351 B1 EP1317351 B1 EP 1317351B1
Authority
EP
European Patent Office
Prior art keywords
partial
data carrier
embossed
embossing
structures
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.)
Expired - Lifetime
Application number
EP01982255A
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German (de)
English (en)
Other versions
EP1317351A1 (fr
Inventor
Johann Müller
Reinhard Plaschka
Jürgen ZERBES
Christoph Baldus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and Devrient GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP1317351A1 publication Critical patent/EP1317351A1/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
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • 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
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/026—Dies
    • B42D2035/16—
    • B42D2035/20—

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 partial areas of the coating are completely visible when viewed vertically, but obscured when obliquely viewed be so that when tilted vertically and oblique viewing a tilting effect arises.
  • the invention further relates to an embossing die for the production of such an optically variable structure.
  • US 4,984,824 is a document with a security element known whose counterfeit protection is based on light diffraction.
  • the diffraction structures of US 4,984,824 Although they are also designed as embossed structures, but can not be perceived as such by the viewer. The observer only sees the recorded information, in the simplest case a colored surface which changes its color impression with the viewing angle.
  • optically variable security elements there are also other optically variable security elements that can be provided on a data carrier. So it is for example from the CA 1019 012 It is known to provide a banknote in a partial area of its surface with a parallel line printing pattern. To generate the optically variable effect, a line structure is additionally embossed in the data carrier in the region of the printed line pattern, so that Flanks arise that are visible only at certain viewing angles. By deliberately arranging the printed line pattern on the flanks of the same orientation of the embossed line structure, the line pattern becomes visible when viewed obliquely from the flanks provided with the lines. When viewed obliquely on the back flanks, the line pattern is not recognizable.
  • counterfeit protection effect of such embossed optically variable security elements can be further improved if additional visually recognizable effects are produced by targeted modification of the line pattern or embossed structure. Examples of such additional effects are given in the WO 97/17211 described.
  • the line imprint is basically arranged on an edge of the embossed structure, so that the contrast reversal or the tilting effect is very sharp, but only occurs in a very narrow viewing angle range. Therefore, precisely this viewing angle range must be found for the visual inspection of the known optically variable elements, so that these optically variable elements are less suitable for rapid visual inspection.
  • the object of the present invention is now to improve these known embossed security elements not only in terms of their counterfeit security against reproductions, but also in terms of their visual verifiability.
  • the optically variable structure consists of an imprint and an embossed structure superimposed on this imprint.
  • the entire area provided with imprinting and embossing is subdivided into sections in which either the imprint or the embossing is uniformly varied for the entire area.
  • the other part (imprint) is the same in all sub-areas, i. E. he has the same laws in all areas.
  • Different partial embossing structures in the sense of the invention are present, for example, if the partial embossing structures in the individual subregions are arranged in phase offset from one another, have different screen rulings or are oriented differently, i. the General Georgiage Modellen at an angle to each other.
  • a further possibility of producing different partial embossing structures consists in arranging the partial embossing structures in the individual subregions offset from each other. The course direction of the partial embossing structures remains the same.
  • the partial embossing structures are designed as grid structures.
  • the section Georgiage Profen may be triangular, but also trapezoidal, sinusoidal, semi-circular or other shape.
  • the partial embossing structures are each designed as a line grid with a constant screen ruling
  • the imprint is preferably also formed as a grid structure, wherein the individual grid elements can be designed arbitrarily.
  • a line grid with a constant screen ruling is used.
  • this line grid consists of printed lines of any color design.
  • Printing grid and embossed structure are coordinated, preferably so that the width of the print grid lines is slightly less than the edges of the embossed structure lines.
  • the printing grid and embossing structure are normally parallel or largely parallel. In this case, the printing screen and the embossed structure do not necessarily have to be rectilinear; rather, they can also be designed in the form of wavy lines, etc.
  • the line widths are between 25 microns and 300 microns, preferably between 55 microns and 150 microns. If the line grid is composed of printed, spaced-apart lines, a ratio of approximately 1: 1 is preferably selected for the ratio printed / unprinted area. If additionally a line width of the order of about 100 ⁇ m is chosen, the lines can not be resolved by the eye practically, and a homogeneous color impression results. That is, the line grid is visually perceived only as a homogeneous colored area. In addition, the lines may be made thickened in certain areas and thus represent, for example, a halftone image or another motif. Alternatively, the lines may also have recesses to create an additional visually recognizable pattern.
  • a rasterization of the imprint can be dispensed with if optically variable colors are used, ie colors which have different optical effects depending on the viewing angle. These can be high-gloss, for example metallic layers or else colors which change the color impression itself depending on the angle, as is the case, for example, with liquid-crystal pigment paints.
  • the optically variable structure according to the invention consists of an imprint in the form of a printed line grid and an embossing structure superimposed on this line grid, the partial embossing structures of which also consist of embossed line grids, which are arranged offset from one another, for example, from partial area to partial area. Due to the different arrangement of the partial embossing structures, the relative position between the printed line grid and the embossed line grid changes from partial area to partial area. Ideally, in a first subarea, the printed lines lie completely on a flank of the first part embossed structure.
  • the printed line screen in this second partial region can cover, for example, the zenith of the second partial embossing structure, i. the printed lines extend on both flanks of the second partial embossed structure.
  • the printing grid is again completely on the flank of the partial embossing structure or is again offset and thus completely arranged on the trailing edge.
  • the viewer When viewing this optically variable structure perpendicular to the data carrier surface, the viewer only recognizes the rasterformigen imprint. When tilting the disk or when changing the viewing angle, however, parts of the imprint are covered by the embossing structure. Since the partial embossing structures are oriented differently relative to the imprint, different parts of the imprint are also covered in the individual subregions of the embossing structure. In some areas, for example, larger parts of the blank spaces of the as Line grid trained imprint covered, so that the viewer perceives this subarea as compared to the perpendicular viewing darker area.
  • the observer therefore perceives the optically variable structure as areas that contrast with respect to brightness, hue or color.
  • the color impression or the brightness and thus also the contrast to the other subregions changes, at least in some subregions, since the printed line screen is not arranged exactly on the flanks of the subprints in all subareas, and thus even with small viewing angle changes different proportions of the printed line grid are shaded. In this way, the viewing angle range in which the optically variable structure exhibits a tilting effect is substantially increased.
  • the invention also has the advantage that the optically variable structures can be produced much easier than the optically variable structures known from the prior art despite the high security against counterfeiting. Since the application of the imprint and the production of the embossed structure are carried out in different steps, inevitably occur in practice tolerances, which lead primarily to a parallel displacement of imprint and embossed structure. This means that it can also happen here that parts of the imprint are arranged not only on the flanks, but also in the region of the zenith of the embossed structure. These tolerances can greatly attenuate the tilting effect of the known optically variable security elements, which is based on the sharp contrast between vertical and oblique viewing.
  • optically variable security element In contrast, in the optically variable security element according to the invention deliberately displacements between imprint and embossed structure are generated. Due to the frequent change of these shifts, which are produced by the different partial embossed structures, resulting in changing the viewing angle constantly new light / shadow conditions or strong contrast changes between the sub-areas, so that when tilting creates the impression that different bright and dark or colored subregions move within the optically variable security element.
  • the inverse implementation of the invention is also conceivable, that is to say that the embossing structure is identical in all subregions, and different subprints are provided in the subregions.
  • this version is much more complicated to produce. Pressure deviations and tolerances are much more prominent and may disturb the overall impression.
  • the variation of the imprint due to the print line offset is recognizable even when viewed vertically and may affect the entire print image of the disk or prevent any desired camouflage of the sub-areas when viewed vertically.
  • this effect can also be used selectively, if the sub-areas should be recognizable from all viewing angles, so that the viewer can adjust even better to the tilting effects.
  • the optically variable structure consists of a printed line screen of constant screen ruling and an embossed structure whose subregions according to the invention form a two-dimensional matrix.
  • the matrix has subregions in the horizontal direction and subregions in the vertical direction, where m, n ⁇ 2.
  • the partial embossing structures provided in the subregions are likewise designed as a line grid with a constant screen ruling.
  • the partial embossing structures and the line grid of the imprint have the same screen width.
  • the width of an embossed line does not usually correspond to the width of the printed line, since the printed line grid and the embossed structure can not always be applied in exact register with each other and in this way ensures that always a part of the lines of the print grid at least so far as to lie on the flanks of the embossing master that at oblique viewing, at least in some areas, a shading effect occurs, which for the visually recognizable contrasts.
  • the width of an embossed line is 100 ⁇ m to 300 ⁇ m.
  • the embossed lines may adjoin one another directly or be arranged at a distance in the range from about 10 ⁇ m to about 60 ⁇ m.
  • the partial regions or partial embossed structures of the matrix advantageously border directly on one another and can be recognized solely on account of their different relative position with respect to the imprint and the associated visual effects.
  • the different relative position between imprint and partial embossed structure can be generated in various ways.
  • the partial embossing structures of two adjacent subregions can be arranged offset from one another.
  • the offset is a fraction of the screen ruling.
  • Another possibility is to choose different directions for adjacent sectionlessnessge Modellen.
  • the partial embossing structures are at an angle of 1 to 5 °, preferably 1 to 3 ° to each other.
  • At least one of the subareas of the embossed structure according to the invention has an information embossing in addition to the subprinting structures.
  • the information embossing represents an embossing, which preferably has the same configuration, for example the same grid elements and grid width as the partial embossing structure, but is offset from the partial embossing structure or arranged at an angle.
  • the information embossing is offset by half a grid width or arranged at an angle of 90 ° to the partial embossing structure.
  • the offset or the different orientation leads between information embossing and partial embossing structures oblique viewing at different light / dark contrasts so that the areas provided with the information embossing become visually recognizable.
  • These areas preferably have the outline contours of characters, numbers, patterns or the like.
  • At least one of the subareas may have only partial embossing structures within the outline of characters, patterns, images, etc.
  • the remaining area of the sub-area is unembossed, or smoothed by the bearing surface of the embossing stamp and the contact pressure necessary during embossing.
  • the embossed information therefore appears as a dull "rough" surface texture over the unembossed or smoothed environment.
  • the partial embossing structures here also preferably form a line grid, which preferably extends at an angle of 45 ° to the contour lines of the outline shape. This has the advantage that within the contour lines of the outline shape, a high number of embossed lines is arranged, which ensure a sufficient play of light and shadow or viewing angle-dependent appearance. A partial area designed in this way is clearly visible especially in the backlight.
  • the visual impression of the information embossing can be further emphasized by being separated from the surrounding partial embossing structure by an unembossed, preferably narrow edge contour.
  • the data carrier is smoothed or calendered in the region of this edge contour by the embossing tool, so that a highly reflective and glossy surface is formed in this region.
  • the unembossed edge contour is also very well suited to visually highlight visually variable structures, as they are already known from the prior art.
  • Particularly high-contrast and visually very conspicuous optically variable structures are produced when the partial embossing structures are offset in each case adjacent subsections each offset by one third of the grid width and at least 50% of the partial embossed structures have an information embossing offset by a fraction, in particular half the screen width Substructure is arranged.
  • the remaining 50% of the partial embossing structures preferably have an information embossing which extends at an angle of 90 ° to the partial embossing structure.
  • the information stamping can have any desired outline shapes. So it may be in the form of characters, patterns, images or the like. Preferably, characters are used which give readable information.
  • the embossed structure or the subregions can also have any outline shapes.
  • the information embossing and / or the subregions are additionally provided with an unembossed edge contour.
  • the embossing structure according to the invention has a plurality of directly adjoining partial regions, in which the course direction of the partial embossing structures is varied by a small angle, so that the optical impression of a movement arises when the data carrier is tilted or when the viewing angle is changed.
  • the course direction is changed in each case by an angle of 1 to 3 °.
  • the color impression of the security element can be varied by imprinting lines of different width and color, wherein these lines can be printed one above the other.
  • a line grid of spaced lines is printed, all of which have the same color.
  • These Lines are printed in a second printing with lines of smaller line width and other color, preferably black.
  • half the line width of the first printed line is used and the second line is centered over the first line.
  • the line grid can also consist of lines of different colors, which are directly adjacent to each other and arranged alternately. It is also conceivable a composed of lines of different color checkerboard pattern, each field of the chess board spaced lines of a color are arranged. Special effects can also be achieved by a line background, in which the lines are designed differently in color within a certain pattern area.
  • the imprint may consist of metallic raster elements which are applied, for example, in the hot stamping process on the data carrier.
  • imprint stands, as already mentioned, also for full surface coatings.
  • the combination with the embossing structure according to the invention can also lead to special visually recognizable effects.
  • the data carrier is a security, in particular a banknote, onto which the uniform coating according to the invention is preferably printed in offset printing becomes.
  • the embossed structure is embossed by means of a stamping die overlapping the uniform coating according to the invention.
  • the embossing stamp used is preferably a steel gravure printing plate in which the embossed structure is engraved in accordance with the desired shape.
  • the embossed structure can be transferred to the data carrier together with other printed images provided in the steel gravure printing plate, which in contrast to the embossing structure are preferably ink-conducting.
  • embossing stamps can be produced by etching techniques or photopolymeric washout processes.
  • embossing stamp also includes any shaped embossing stamp, such as an embossing stamp. rotary embossing machines.
  • optically variable structure has an optically variable coating in addition to the imprint according to the invention.
  • This can be an arbitrarily designed imprint of optically variable inks.
  • These optically variable printing inks preferably contain interference layer pigments without body color or liquid crystal pigments.
  • This optically variable coating in any outline shape, eg as a pattern, sign. logo or the like, is preferably applied by screen printing or flexographic printing.
  • the data carrier or the data carrier material is preferably provided with this screen printing imprint in a first step. Subsequently, the coating according to the invention and the embossed structure are applied.
  • the screen print substrate also stabilizes the embossed structure, as the paper substrate loses some of its elasticity and can absorb less moisture.
  • the embossed structure according to the invention makes sense to "freeze” the embossed structure with the aid of a release coating.
  • the "zenith" of the embossed structures are coated with clear coat and the wells of the embossed structures at least partially filled with clearcoat. Paint removal is particularly useful when embossed structures with a triangular cross-sectional profile are used, as in this profile the tips of the triangles may wear out very quickly in use. By such wear and tear, the "tilting effect" occurring at alternating different viewing angles weakens under certain circumstances significantly.
  • the deformation of the embossment during use can either be prevented or at least reduced.
  • the coating is preferably carried out by means of special clearcoats in different processes, preferably in screen printing or flexographic printing.
  • the use of UV-curing paints is furthermore preferred.
  • the paint may contain special feature substances, such as luminescent substances, or else effect pigments, such as liquid-crystal or interference-layer pigments. Under certain circumstances, it may also be useful first to apply the lacquer layer, which may be made matt or shiny, and above that a layer containing the effect pigments. In this case, it is also possible to apply the lacquer layer over the entire surface to the entire note and only the lacquer layer provided with effect pigments in the region of the security element according to the invention.
  • the negative relief of the embossed structure which is present on the back of the data carrier, be painted or filled to give the security element further stability.
  • Paint can be applied, for example, in flexographic printing or screen printing.
  • Fig.1 shows a data carrier 1 according to the invention with an optically variable structure 2.
  • the optically variable structure 2 sets by a human Can be tested without aids feature, which optionally serves in addition to other security features to determine the authenticity of the disk.
  • the further features may be, for example, a security thread, watermarks or the like.
  • the optically variable structure 2 according to the invention can be used particularly advantageously for banknotes but also for other securities, such as shares, checks or the like. Even labels or other elements for product safety can be provided with such an optically variable structure.
  • the optically variable structure 2 basically comprises an embossed structure and a print contrasting with the surface of the data carrier, which are combined with one another in such a way that at least partial areas of the coating are completely visible when viewed perpendicularly, but hidden when viewed obliquely.
  • the imprint 4 consists in the case shown here of a line grid 4 and also the embossed structure 18 is formed in the form of a line grid structure.
  • the embossed structure 18 is positioned in such a way to the printing grid 4 that the observer recognizes only the printing grid 4 when viewed vertically from the viewing direction A.
  • the viewer faces the flank of the embossed structure 18, which coincides with the pressure lines of the print grid 4.
  • the observer therefore perceives from the viewing direction B an almost uniform colored imprint.
  • the viewing direction C the viewer faces the flanks of the embossed structure 18, which coincide with the respective gap of the print grid 4. The viewer takes Therefore, from this viewing direction C no or only a fraction of the imprint 4 true.
  • the embossed structure 18 is preferably produced by means of a steel gravure printing plate.
  • the negative of the desired embossed structure 18 is engraved in the printing plate.
  • the data carrier material 1 is pressed into the engraved areas of the printing plate and sustainably deformed. Due to the high contact pressure, the embossing is also on the back of the data carrier material 1 from.
  • the embossment 18 may be provided with a protective layer 16.
  • the embossing on the rear side is also provided with a protective layer 16.
  • the protective layer 16 is preferably provided only in the region of the optically variable structure 8.
  • This protective layer 16 may be a transparent lacquer or a printing ink in the color tone of the data carrier material 1.
  • This protective layer 16 can be transferred to the data carrier 1 in a separate operation after the embossing process or simultaneously with the embossing. If an intaglio printing plate is used as an embossing stamp, then the printing plate is colored with the lacquer or the printing ink in the area of the embossed structure before the printing process.
  • embossed structure 18 consists, viewed in section, of directly adjacent triangular profiles.
  • the triangular profiles can also be slightly spaced from each other by horizontal connecting webs in the "Valley" 19 of the disk are provided. This embodiment is in the Fig. 2 not shown
  • a larger engraving depth means at the same time a greater width of the engraved structure.
  • screen widths less than 300 microns, preferably less than 210 microns are used according to the invention. Particularly good results can be achieved with stamping lines with a width of about 170 microns. If the stamping lines are to be spaced apart, it is preferable to provide a spacing of approximately 30 ⁇ m.
  • Fig. 3 shows the basic structure of an optically variable structure 2 according to the invention in plan view. It consists of a print 4, which in the present case is shown as a line grid with a constant screen ruling, wherein the line grid consists of spaced-apart printed lines. Overlapping to this imprint 4, the embossed structure 3 is arranged, which is indicated for reasons of clarity only by the dashed frame.
  • the embossed structure 3 shown is subdivided into six subregions 30, 31, 32, 33, 34, 35, in each of which the partial embossing structures (not shown) are arranged.
  • embossing Since the embossing is applied after the imprint, usually register tolerances must be accepted. In order to ensure that the entire area 4 provided with the imprint is provided with the desired embossed structure 3, it may be particularly advantageous to select the embossed structure 3 slightly larger in dimensions than the imprint 4. It is equally conceivable, of course, the reverse case, in which the embossing structure 3 occupies a smaller area than the imprint 4.
  • the relative position of the partial embossing structures and of the imprint 4 varies within the embossing structure 3 according to the invention from subregion to subregion, so that the subregions differ with regard to their color, their hue or their brightness at a certain oblique viewing angle, and thus can be visually recognized as contrasting subregions.
  • the color and light / dark impressions of the subareas vary.
  • a special embodiment of the embossed structure 3 is shown schematically. It is composed of the subregions 30, 31, 32, 33, 34, 35, in each of which different partial embossing structures 6, 7, 8, 9, 10, 11 are arranged.
  • the slanted lines in Fig. 4 in each case indicate the course as well as the arrangement of the respective partial embossing structure 6, 7, 8, 9, 10, 11.
  • the illustrated lines indicate the valleys of the embossed structure, as is clear from the sketch in the left area under the embossed structure, which represents the embossed structure in cross section. For the sake of clarity, the zeniths of the embossed structure were not shown with lines in the figures.
  • All partial embossing structures 6, 7, 8, 9, 10, 11 have the same grid spacing a.
  • Two adjacent Operagarge Quilt 6, 7, 8, 9, 10, 11th but are offset from each other.
  • the offset is a fraction 1 / x of the screen ruling a.
  • two adjacent partial embossing structures are arranged offset by a third of the screen width a to each other.
  • the print 4 was in for clarity Fig. 4 not shown. However, since the arrangement of the partial embossing structures varies from partial area to partial area, the relative position between the imprint 4 and the respective partial embossing grid 6, 7, 8, 9, 10, 11 also varies accordingly. In this way, frequently changing light / dark contrasts are generated, which stand out visually and are easily recognizable. If the offset is chosen, for example, such that the partial embossing structures repeat within the embossed structure, several subregions show the same appearance under one viewing angle.
  • the partial embossing structures 6, 7, 8, 9, 10, 11 of the embossed structure 3 according to the invention need not in principle be arranged offset by a fraction of the screen width a. Any other offset is also conceivable. Also, not all of the partial embossing structures 6, 7, 8, 9, 10, 11 must be arranged offset to one another. Under certain circumstances, it is sufficient if only two of the subregions 30, 31, 32, 33, 34, 35 are provided with staggered partial embossing structures 6, 7, 8, 9, 10, 11. These do not necessarily necessarily border directly on each other. Likewise, individual subregions 30, 31, 32, 33, 34, 35 can be provided with partial embossing structures 6, 7, 8, 9, 10, 11 of different screen ruling a.
  • the course direction of individual partial embossing structures 6, 7, 8, 9, 10, 11 can vary with respect to the course direction of adjacent partial embossing structures 6, 7, 8, 9, 10, 11.
  • the partial embossing structure 6 can be arranged at an angle of 90 ° to the partial embossing structure 11.
  • Fig. 5 to 8 various embodiments of a portion 30 of the embossed structure 3 are shown in plan. For the sake of clarity, all of these embodiments have in common that the imprint 4 is arranged on one of the flanks of the partial embossing structure 6. This assignment results from the profile sketches at the lower edge of the respective figure, in which a section of the partial embossing structure 6 and the imprint 4 is shown in cross section.
  • additional changes are provided in the partial embossing structures 6, which represent recognizable information. In most cases these are changes in the course or arrangement of the embossed structures. This additional information is referred to as information embossing.
  • Fig. 5 is the Generalgarge Cook 6 in the information area 12, which here has the shape of the letter "U" interrupted.
  • an information stamping 13 is likewise provided which, although having the same course direction as the partial stamping structure 6, is arranged offset therefrom. If this subregion is viewed from one direction, in which the viewer faces the flanks of the partial embossed structure 6 provided with the imprint 4, then he perceives the subregion 30 as a homogeneous colored surface in the hue of the imprint 4, which in the region of the information 12 is represented by a lighter colored area is interrupted. Due to this contrast, the information 12, here the letter "U" becomes perceptible.
  • the brighter color impression in the area of the information 12 is due to the relative position, which is different in relation to the environment, between the information embossing 13 and the imprint 4.
  • the imprint 4 no longer lies exactly on a flank of the information embossing, but also extends to the Zenite, so not the entire unprinted intermediate area of the printed Line raster 4 is covered obliquely by the information stamping 13 and therefore appears brighter.
  • the information stamping 13 is also separated from the partial stamping structure 6 by an unembossed region 15.
  • unembossed areas 15 which are shown in the present examples as narrow black lines, which in practice can also be made significantly wider, the data carrier is smoothed during the embossing process by the pressing of the stamping die, so that the area 15 at an angle Viewing as a bright, shiny area stands out.
  • This principle can also be used in all other embodiments.
  • an information stamp 14 in the area of the information 12 is likewise provided. It likewise has the same grid width as the partial embossing structure 6, but is rotated with respect to its course direction by 90 ° with respect to the direction of progression of the partial embossing structure 6.
  • the lines of the imprint 4 therefore extend over the zeniths and valleys of the information embossing, as shown in the sketch in the lower right margin of FIG Fig. 6 is indicated.
  • the information 12 stands out from the environment depending on the viewing angle as a lighter or darker area and is thereby recognizable.
  • the information stamp 14 is separated by an unembossed edge contour 15 of the partial embossed structure.
  • Fig. 7 is a variant of in Fig. 6 shown embodiment shown.
  • the information stamp 14 runs at an angle of 90 ° to the surrounding part embossed structure.
  • the stamping lines are arranged parallel to the sides of the subregion 30.
  • a partial area 30 which has a partial embossing structure 6 only in the area of the information 27.
  • the partial embossing structure 6 preferably extends at an angle ⁇ to the outline contours of the information 17. In this way, it is ensured that as many embossing lines as possible are required for displaying the information, and thus the information is clearly recognizable.
  • the angle ⁇ can be chosen arbitrarily, but is preferably 45 °.
  • the embossing structure 50% of the subregions according to the in Fig. 5 executed variant shown. That is, the information embossing structure is arranged offset to the partial embossing structure. According to a further preferred embodiment of the embossing structure, 50% of the subregions are as in Fig. 6 shown executed. That is, the information embossing structure extends at an angle of 90 ° to the partial embossing structure.
  • Fig. 9 shows an embodiment; in which 50% of the sub-areas according to Fig. 5 and 50% of the sections according to Fig. 6 are shown. It consists of four subregions 30, 31, 34, 35, in which different partial embossing structures 6, 7, 8, 9 are arranged, while the line grid 4 is the same for all subregions.
  • the sections 30, 34 are in accordance with the in Fig. 6 illustrated variant and the portions 31, 35 according to the in Fig. 5 executed variant shown. Due to the different arrangement of the partial embossing structures 6, 7, 8, 9 or the information embossing structures 13, 14, the subregions as well as the information can be seen obliquely as differently bright or dark areas.
  • the contrasts between the partial areas or the information about the surroundings change, so that at least some of the partial areas appear lighter or darker, and the overall appearance of the optically variable security element changes.
  • the information shown here can be identical in all partial areas or else have different contents. When viewing this embossed structure under different viewing angles, the information appears clearly in front of a dark background or vice versa in different subregions.
  • the embossed structure 3 does not necessarily have to be composed of rectangular sections 30, 31, 32, 33, 34, 35.
  • the sections 30, 31, 32, 33, 34, 35 may have any other outline shapes.
  • the entire optically variable structure 2, or the embossed structure 3 the outline of a circle, semicircle, trapezium, pattern, logo or the like, within which the sub-areas 30, 31, 32, 33, 34, 35 with this Overall contour contour of the optically variable structure 2 are arranged adapted outlines.
  • the outline shapes of the individual subregions 30, 31, 32, 33, 34, 35 may also vary.
  • Figure 10 shows a further variant of the optically variable security element 2 according to the invention.
  • the embossed structure lies here in the form of the letter "B" before.
  • the area within the letter is subdivided into a plurality of subregions 40, 41, 42, 43, which in the figure are provided with an outline contour 15 for better recognition.
  • subregions 40, 41, 42, 43 partial embossed structures 44, 45, 46, 47 are provided, which are each arranged offset from one another.

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Optical Recording Or Reproduction (AREA)

Claims (35)

  1. Support de données (1) avec une structure (2) optiquement variable, qui présente une structure gaufrée (3, 18) et un revêtement (4) contrastant avec la surface du support de données, la structure gaufrée (3, 18) et le revêtement (4) étant combinés de telle manière qu'au moins des parties du revêtement (4) sont entièrement visibles lors d'une observation à la verticale bien que dissimulées lors d'une observation en biais, si bien qu'un effet de basculement est généré en cas d'alternance d'une observation verticale et d'une observation en biais, l'ensemble de la zone pourvue de la structure gaufrée (3, 18) et du revêtement (4) étant subdivisé en zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) où sont prévues différentes structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47), et le revêtement (4) restant constant dans toutes les zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43), caractérisé en ce que les zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) forment une matrice à deux dimensions comportant m zones partielles en direction horizontale et n zones partielles en direction verticale, m, n étant ≥ 2.
  2. Support de données (1) selon la revendication 1, caractérisé en ce que le revêtement (4) est une structure tramée.
  3. Support de données (1) selon la revendication 2, caractérisé en ce que la structure tramée est une trame linéaire à pas de trame constant.
  4. Support de données (1) selon la revendication 3, caractérisé en ce que la trame linéaire est constituée de lignes de couleur espacées entre elles ou de lignes de couleur directement adjacentes les unes aux autres.
  5. Support de données (1) selon au moins une des revendications 1 à 4, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) sont réalisées comme structures tramées.
  6. Support de données (1) selon au moins une des revendications 1 à 5, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) sont réalisées comme trame linéaire à pas de trame constant.
  7. Support de données (1) selon au moins une des revendications 1 à 6, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) et le revêtement (4) ont des pas de trame identiques.
  8. Support de données (1) selon au moins une des revendications 1 à 7, caractérisé en ce qu'au moins une partie des zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) où les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) sont disposées, est composée de zones partielles directement adjacentes les unes aux autres.
  9. Support de données (1) selon au moins une des revendications 1 à 8, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) sont disposées en décalage dans au moins deux zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) adjacentes l'une à l'autre.
  10. Support de données (1) selon la revendication 9, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) sont disposées en décalage d'une fraction, en particulier d'un tiers de pas de trame.
  11. Support de données (1) selon au moins une des revendications 1 à 8, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) présentent des directions d'extension différenciées dans deux zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) adjacentes l'une à l'autre.
  12. Support de données (1) selon la revendication 11, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) s'étendent en formant entre elles un angle compris entre 1 et 5°, de préférence entre 1 et 3°.
  13. Support de données (1) selon la revendication 11 ou la revendication 12, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) de plusieurs zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) adjacentes les unes aux autres s'étendent en formant un angle défini entre elles, si bien qu'un effet optique de mouvement est généré en cas de variation de l'angle d'observation.
  14. Support de données (1) selon au moins une des revendications 1 à 13, caractérisé en ce qu'au moins une des zones partielles (30) présente en outre un gaufrage d'information (13, 14), ledit gaufrage d'information (13, 14) pouvant être décalé ou être disposé angulairement par rapport à la structure gaufrée partielle (6).
  15. Support de données (1) selon la revendication 14, caractérisé en ce que l'angle est de 90°.
  16. Support de données (1) selon au moins une des revendications 1 à 15, caractérisé en ce qu'au moins 50 % des structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) présentent un gaufrage d'information (13, 14) disposé en décalage par rapport à la structure gaufrée partielle (6, 7, 8, 9, 10, 11, 44, 45, 46, 47).
  17. Support de données (1) selon la revendication 16, caractérisé en ce que le gaufrage d'information (13) est disposé en décalage d'un demi-pas de trame par rapport à la structure gaufrée partielle (6).
  18. Support de données (1) selon au moins une des revendications 1 à 17, caractérisé en ce qu'au moins 50 % des structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) présentent un gaufrage d'information (14) qui s'étend en formant un angle de 90° par rapport à la structure gaufrée partielle (6, 7, 8, 9, 10, 11, 44, 45, 46, 47).
  19. Support de données (1) selon au moins une des revendications 1 à 18, caractérisé en ce que les structures gaufrées partielles (6) d'au moins une zone partielle (30) sont disposées à l'intérieur du contour extérieur de caractères, motifs, images, etc. (17).
  20. Support de données (1) selon la revendication 19, caractérisé en ce que les structures gaufrées partielles (6) forment une trame linéaire qui s'étend en formant un angle de 45° par rapport aux lignes (17) du contour externe.
  21. Support de données (1) selon au moins une des revendications 1 à 20, caractérisé en ce qu'au moins les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) d'une zone partielle (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) et/ou les gaufrages d'information (13, 14) d'au moins une structure gaufrée partielle (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) présentent un contour de bordure non gaufré.
  22. Support de données (1) selon au moins une des revendications 1 à 21, caractérisé en ce que le support de données (1) est pourvu d'une couche de protection (16) au moins dans la zone de la structure (2) optiquement variable, ladite couche de protection étant disposée sur la structure (2) optiquement variable et/ou la surface opposée du support de données (1).
  23. Support de données (1) selon au moins une des revendications 1 à 22, caractérisé en ce que le support de données (1) est une valeur mobilière, en particulier un billet de banque.
  24. Support de données (1) avec une structure optiquement variable, qui présente une structure gaufrée (3, 18) et un revêtement (4) contrastant avec la surface du support de données (1), la structure gaufrée (3, 18) et le revêtement (4) étant combinés de telle manière qu'au moins des parties du revêtement (4) sont entièrement visibles lors d'une observation à la verticale bien que dissimulées lors d'une observation en biais, si bien qu'un effet de basculement est généré en cas d'alternance d'une observation verticale et d'une observation en biais, l'ensemble de la zone pourvue de la structure gaufrée (3, 18) et du revêtement (4) étant subdivisé en zones partielles où sont prévues différents revêtements partiels, et la structure gaufrée (3, 18) restant constante dans toutes les zones partielles, caractérisé en ce que les zones partielles forment une matrice à deux dimensions comportant m zones partielles en direction horizontale et n zones partielles en direction verticale, m, n étant ≥ 2.
  25. Timbre à gaufrer pour la fabrication d'un support de données (1) selon au moins une des revendications 1 à 23, avec une surface de timbre à gaufrer où est gravée une structure gaufrée, ladite structure gaufrée étant subdivisée en zones partielles qui correspondent aux zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) du support de données formant une matrice à deux dimensions, et où sont prévues différentes structures gaufrées partielles.
  26. Timbre à gaufrer selon la revendication 25, caractérisé en ce que les structures gaufrées partielles sont réalisées comme trame linéaire gravée.
  27. Timbre à gaufrer selon la revendication 25 ou la revendication 26, caractérisé en ce que les zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) sont directement adjacentes les unes aux autres.
  28. Timbre à gaufrer selon au moins une des revendications 25 à 27, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) sont disposées en décalage dans au moins deux zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) adjacentes l'une à l'autre.
  29. Timbre à gaufrer selon au moins une des revendications 25 à 28, caractérisé en ce que les structures gaufrées partielles (6, 7, 8, 9, 10, 11, 44, 45, 46, 47) présentent des directions d'extension différenciées dans deux zones partielles (30, 31, 32, 33, 34, 35, 40, 41, 42, 43) adjacentes l'une à l'autre.
  30. Timbre à gaufrer selon au moins une des revendications 25 à 29, caractérisé en ce que le timbre à gaufrer est une plaque d'héliogravure.
  31. Procédé de fabrication d'un support de données (1) avec une structure (2) optiquement variable selon au moins une des revendications 1 à 23, caractérisé par les étapes suivantes :
    - préparation d'un timbre à gaufrer selon au moins une des revendications 25 à 30 ;
    - application d'un revêtement (4) sur un support de données (1) ou une matière de support de données ;
    - gaufrage du support de données (1) ou de la matière de support de données dans la zone du revêtement (4) au moyen du timbre à gaufrer.
  32. Procédé selon la revendication 31, caractérisé en ce que le revêtement (4) est produit par procédé offset.
  33. Procédé selon la revendication 31 ou la revendication 32, caractérisé en ce que le revêtement (4) est produit comme trame linéaire.
  34. Procédé selon la revendication 31 ou la revendication 32, caractérisé en ce que le revêtement (4) est produit au moyen de couches optiquement variables sur toute la surface.
  35. Utilisation du timbre à gaufrer selon au moins une des revendications 25 à 30 pour la production de structures (2) optiquement variables.
EP01982255A 2000-09-08 2001-09-06 Support de donnees dote d'un element optiquement variable Expired - Lifetime EP1317351B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10044465A DE10044465A1 (de) 2000-09-08 2000-09-08 Datenträger mit einem optisch variablen Element
DE10044465 2000-09-08
PCT/EP2001/010288 WO2002020280A1 (fr) 2000-09-08 2001-09-06 Support de donnees dote d'un element optiquement variable

Publications (2)

Publication Number Publication Date
EP1317351A1 EP1317351A1 (fr) 2003-06-11
EP1317351B1 true EP1317351B1 (fr) 2011-07-13

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US (1) US8137899B1 (fr)
EP (1) EP1317351B1 (fr)
CN (1) CN1262430C (fr)
AT (1) ATE516153T1 (fr)
AU (1) AU2002213888A1 (fr)
CA (1) CA2421101C (fr)
DE (1) DE10044465A1 (fr)
HK (1) HK1059068A1 (fr)
PL (1) PL213140B1 (fr)
RU (1) RU2280561C2 (fr)
WO (1) WO2002020280A1 (fr)

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DE102017106721A1 (de) 2017-03-29 2018-10-04 Leonhard Kurz Stiftung & Co. Kg Verfahren zum Herstellen einer Mehrschichtfolie und eine Mehrschichtfolie sowie ein Sicherheitselement und ein Sicherheitsdokument
DE102017006949A1 (de) * 2017-07-21 2019-01-24 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit optisch variabler Prägestruktur
DE102017008919A1 (de) 2017-09-22 2019-03-28 Giesecke+Devrient Currency Technology Gmbh Wertdokument und Verfahren zum Herstellen desselben
DE102017009092A1 (de) 2017-09-28 2019-03-28 Giesecke+Devrient Currency Technology Gmbh Verfahren zur Herstellung eines optisch variablen Elements sowie entsprechendes Element
DE102017011455A1 (de) 2017-12-12 2019-06-13 Giesecke+Devrient Currency Technology Gmbh An unterschiedliche Kundenwünsche anpassbares Sicherheitselement mit einer optisch variablen Struktur
CN110001234B (zh) * 2018-01-05 2022-08-30 中钞特种防伪科技有限公司 光学防伪元件和光学防伪产品
CN110920283B (zh) * 2019-11-27 2022-05-06 中钞油墨有限公司 一种印有具有三重视觉效果图纹的承印物及其制备方法
FR3105088B1 (fr) * 2019-12-20 2021-12-24 Oberthur Fiduciaire Sas Structure optique à effet de relief
CN114872464A (zh) * 2022-06-10 2022-08-09 赵晓旭 胶印机三视印刷方法及制品
CN114872463A (zh) * 2022-06-10 2022-08-09 赵晓旭 一种胶印机特种印制方法及制品

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CN1452566A (zh) 2003-10-29
ATE516153T1 (de) 2011-07-15
RU2280561C2 (ru) 2006-07-27
PL359706A1 (en) 2004-09-06
AU2002213888A1 (en) 2002-03-22
EP1317351A1 (fr) 2003-06-11
HK1059068A1 (en) 2004-06-18
PL213140B1 (pl) 2013-01-31
CA2421101C (fr) 2007-07-17
DE10044465A1 (de) 2002-03-21
CN1262430C (zh) 2006-07-05
CA2421101A1 (fr) 2003-03-04
US8137899B1 (en) 2012-03-20
WO2002020280A1 (fr) 2002-03-14

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