EP1467871B1 - Procede d'heliogravure acier d'un document de securite et plaque d'heliogravure en acier et produit intermediaire utilise et leur procede de production - Google Patents

Procede d'heliogravure acier d'un document de securite et plaque d'heliogravure en acier et produit intermediaire utilise et leur procede de production Download PDF

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Publication number
EP1467871B1
EP1467871B1 EP03702402A EP03702402A EP1467871B1 EP 1467871 B1 EP1467871 B1 EP 1467871B1 EP 03702402 A EP03702402 A EP 03702402A EP 03702402 A EP03702402 A EP 03702402A EP 1467871 B1 EP1467871 B1 EP 1467871B1
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EP
European Patent Office
Prior art keywords
printing plate
structures
embossed
microns
producing
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
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EP03702402A
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German (de)
English (en)
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EP1467871A1 (fr
EP1467871B2 (fr
Inventor
Eckhard Braun
Reinhard Plaschka
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Giesecke and Devrient GmbH
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Giesecke and Devrient GmbH
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Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
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Publication of EP1467871B1 publication Critical patent/EP1467871B1/fr
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Classifications

    • 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
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio printing
    • 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/43—Machines printing by both intaglio and another type of printing means

Definitions

  • the invention relates to a method for producing a security document, in particular a security such as banknote, check and the like, with a printed image applied by the steel gravure process and with an embossed microstructure region whose structures are on the order of less than 100 ⁇ m.
  • the invention further relates to tools suitable for the manufacturing process, namely steel gravure printing plates, and to the production thereof, including semi-finished products, namely originals and intermediate molds for the production of the steel gravure printing plates and the security documents produced therewith.
  • the steel gravure corresponds to intaglio printing, whereby the printing plate is made of steel. As a result, a longer service life of the printing plate is achieved and allows for the securities and in particular the banknote printing required high volumes.
  • Blind embossing is sometimes produced together with the steel gravure image in a common printing process using a single, partially inked steel gravure plate.
  • the paper is pressed into the recesses of the blind embossing areas and in this way permanently deformed.
  • the blind embossed areas of the printing plate are not filled with ink unlike the image areas, so that the substrate material of the security document in these areas only sustainably deformed, that is embossed, ( WO 97/48555 ; DE-A-198 45 552 ).
  • a security document from a substrate comprises both printed indicia and a section of transparent plastic.
  • the latter has an embossed image which may contain a matrix of lines, dots or embossed structure.
  • Such a security document is produced by means of a gravure printing plate which, in addition to engraved gravure structures, has a plurality of embossing plates arranged at intervals in the peripheral surface of a printing cylinder.
  • a gravure printing method for printing contiguous color areas of different ink layer thickness is known.
  • a first and a second color surface are directly adjacent to one another and are separated from one another by a sharp boundary line which is invisible to the naked eye when viewed.
  • This boundary line is generated by a separating edge between the two engraving areas of the corresponding printing plate, the upper edge of which tapers to the level of the printing plate surface.
  • the engraving areas may in this case be formed flat or have a roughness pattern for better adhesion of the printing ink.
  • blind embossing When looking at blind embossing, there are special three-dimensional visual impressions due to light and shadow effects. In addition, blind embossing with corresponding dimensions can also be detected tactilely.
  • the structures for the steel gravure image and for the blind embossings are usually introduced into the printing plate surface by means of a stylus, laser or by etching. Regardless of the deployment technique used, these structures will also be referred to generally below as “engravings".
  • engravings the fineness of the structures is limited, on the one hand by the engraving techniques themselves, but on the other hand also by the fact that particularly fine structures, the mechanical influences of the wiping cylinder, wiped with the excess ink from the partially inked printing plate, not withstand in the long run.
  • embossed structures Due to the slightly iridescent movement and the friction, which prevails at a corresponding contact pressure of the wiper cylinder, embossed structures are on the order of significantly less than 100 microns (hereinafter referred to as "microstructures") damaged in no time. Accordingly, embossments having microstructures significantly smaller than 100 ⁇ m are produced to produce special optical effects in an embossing process performed separately from the printing operation for applying the steel gravure image.
  • optical diffraction structures such as holograms and gratings.
  • the order of magnitude of these diffraction structures is in the wavelength range of visible light, ie less than 1 ⁇ m.
  • embossed diffraction structures and as a last procedural step to print the paper, for example by means of steel gravure printing.
  • embossed microstructures in a security document be it as a blind embossing in the substrate material itself or as a diffractive relief structure in a specially provided lacquer layer, thus requires a separate working step in addition to the printing process for producing the steel gravure image.
  • the object of the present invention is to propose a method for producing a security document, with which steel gravure images and embossed microstructures can be produced more easily.
  • a further object is to propose tools for carrying out the method and a method for producing these tools and their semi-finished products.
  • the steel gravure image and the embossed microstructures are produced in a common printing process using a common printing plate in which both the print image engraving and the microstructures are present.
  • the microstructures face one another the printing plate surface slightly lowered so that they are not detected by the wiper cylinder, but still allow a perfect embossing process.
  • the dimension of the retraction of the microstructures depends on the area size of the microstructure area on the one hand and on the compressibility of the wiping cylinder material and the wiping cylinder contact pressure on the other hand.
  • the microstructures should therefore be about 20 .mu.m to 100 .mu.m below the printing plate surface, preferably at least 40 .mu.m and at most 60 .mu.m, these details refer to the components of the microstructures closest to the printing plate surface.
  • a square microstructure area should have an area of less than 100 mm 2 to preclude advancement of the wiping cylinder down to the underlying microstructures.
  • the dimension of the microstructure area in the direction parallel to the axis of rotation of the wiping cylinder and parallel to the printing plate surface should be less than 10 mm.
  • microstructure regions can together form a larger microstructure surface, wherein the individual microstructure regions are separated by webs reaching up to the printing plate surface.
  • the webs have on the printing plate surface such a width that they can carry the wiper cylinder, without being permanently damaged by its contact pressure. In this way, an arbitrarily shaped and arbitrarily large area matrix can be generated from smaller microstructure areas.
  • the dimensions of the microstructures are preferably of the order of magnitude of between 5 ⁇ m and 100 ⁇ m, if simple blind embossings are to be produced. If, on the other hand, a diffraction-optical relief structure is coined with the microstructures be, for example, in a specially applied to the security document material, optionally metallized coating layer, the order of magnitude of the microstructures in the wave-optical range at and below 1 micron.
  • the invention provides a two-stage printing plate production.
  • an original printing plate with the print image engraving and on the other hand, one or more dies with the microstructures separately produced in a conventional manner and the original printing plate or a molded thereon Mater is then combined with the original embossing dies or embossing stamp duplicates.
  • intermediate forms are first embossed with the original printing plate.
  • the microstructure embossing dies also produce a number of duplicates corresponding to the usefulness of the steel gravure printing plate.
  • the materials are then combined with the duplicates of the microstructure stamps, for example by juxtaposition and proper bonding. This complex then serves as the actual intermediate form for reshaping one or more duplicate printing plates, which are then used as steel gravure printing plates in the printing units.
  • one or more areas are removed from the original printing plate, in which the printed image is engraved, in which the original microstructure embossing stamp (s) are inserted, that the microstructures are below the plate surface.
  • the Matern are then formed by the resulting complex.
  • a number of mats assembled in the desired utility configuration then form the intermediate mold for the manufacture of the steel gravure printing plates.
  • the printing plate can be engraved with the opposite of the ungrav mandat printing plate level lowered Mikrooniage Modellen directly.
  • the prerequisite is the use of a Rezisionsgraviervorraum, since standard equipment for the engraving of intaglio printing plates do not have sufficient accuracy to reproducibly produce predetermined structures whose dimensions are smaller than 100 microns. Precision engraving can be achieved both by mechanical, i. machined engraving as well as done by laser engraving.
  • the regions provided for the embossing microstructures can first be removed by the value by which the depression is to take place. The microstructures are then inserted into these areas below the level of the unprocessed printing plate surface by precision engraving. In principle, it is also possible first to produce the microstructures in the predetermined desired depth and, if still necessary, subsequently to remove any remaining printing plate material in order to achieve the desired reduction in one area.
  • the printing plate original provided with the microstructures can be used directly as a combined printing and embossing plate.
  • the original but can also be duplicated with the usual reproduction and impression techniques.
  • the intaglio printing plates according to the invention ensure on the securities produced therewith even after long runs even concise embossing structures with high contour sharpness.
  • the substrate material for example cotton paper
  • the substrate material for example cotton paper
  • the lowering of the embossed structures in the printing plate causes in the corresponding region of the processed substrate a non-compressed or at least less compressed region from which the embossed microstructures rise.
  • the embossed microstructures can be provided with stabilizing protective layers.
  • FIG. 1 shows as one of many possible types of security documents a banknote in plan view with a printed image 1 produced by steel gravure printing and a microstructure embossment 2 likewise produced by steel gravure printing.
  • Microstructure embossment 2 can be, for example, a blind embossing in the paper substrate or a diffraction-optical relief structure in one on the Paper substrate applied plastic layer.
  • FIG. 2 shows a cross section through the banknote from FIG. 1, the microstructure embossing 2 being in the form of a blind embossing in the surface of the banknote substrate 3.
  • the applied by steel gravure printing, the print image 1 forming ink "stands" on the surface of the substrate 3 and is therefore tactile detectable.
  • the raised microstructure of the microstructure embossment 2 is, for example, a line grid with a screen ruling in the range from 5 to 100 ⁇ m. Such a structure can be visually perceived as a fine light / shadow pattern and also the surface can optionally be tactilely distinguished from the surrounding unembossed surface.
  • FIGS. 3 a to 3 c show an exemplary embodiment in which the microstructure embossing 2 is designed as a diffraction-optical relief structure.
  • the structures have a magnitude of about 1 micron or less than 1 micron, that is in the wavelength range of visible light.
  • 3a shows the still unprinted bank note substrate 3, which is smoothed in a zone 4, so that an embossing lacquer 5 adheres particularly well to the substrate 3 in this area.
  • the embossing lacquer 5 is vapor-deposited with a thin metal layer 6.
  • the printed image 1 and on the other hand the diffractive microstructure embossment 2 are applied to the thus prepared substrate 3 in the steel gravure printing method (FIG. 3b).
  • the microstructure embossing 2 is covered with a scratch-resistant protective lacquer 7 (FIG. 3c).
  • FIG. 4d shows that in the printing plate surface 9 on the one hand there are steel gravure printing structures 10 for producing the printed image 1 and on the other hand microstructures 11 for producing the microstructure embossment 2.
  • the microstructures 11 are slightly embedded in the pressure plate surface 9, so that the uppermost microstructure areas, that is, the tips of the microstructure relief lie at a small distance d below the pressure plate surface 9.
  • the distance d measures between 20 and 100 ⁇ m, preferably between 40 and 60 ⁇ m.
  • the ink is first partially applied in the region of the steel gravure structures 10 on the printing plate surface 9, and by means of a wiping cylinder, not shown, becomes excess Wiped ink from the printing plate surface 9.
  • a wiping cylinder not shown
  • the substrate of the security document is pressed into the steel gravure structures 10 and into the microstructures 11, whereby on the one hand the ink is taken up from the steel gravure structures 10 and adheres to the substrate surface and on the other hand the substrate is embossed on its surface in the region of the microstructures 11, that is permanently deformed, will.
  • the pressures and temperatures of the plate cylinder used in the steel gravure printing process for the production of the printed image are suitable for the embossing of conventional security papers, so that the simultaneous embossing and printing of security paper with a single steel gravure plate is easily possible.
  • a typical heating temperature of the plate cylinder is around 80 ° C, but it can also be between 50 and 90 ° C.
  • steel intaglio structures 10 are introduced in a conventional manner in an original printing plate O, for example by means of a stylus or in the etching process.
  • one or optionally several different dies D with microstructures 11 are also produced in a conventional manner, for example with the same methods that are usually used for the production of diffraction-optical relief structures.
  • duplicates of the original printing plate O and the stamp D are produced.
  • the production of the duplicate of the original printing plate O, that is the Mater M can be done, for example, by embossing the original printing plate in a plastically deformable plastic, which then forms the Mater M (Cobex embossing). But there are also other Abformungstechniken known and usable.
  • a number of mats M 1 , M 2 ..., M n corresponding to the number of uses of the steel gravure printing plate to be produced are produced.
  • Also of the die or dies D with the microstructures 11 correspondingly many embossing stamp duplicates DD 1 , DD 2 , ... are produced.
  • the molding process of the embossing stamp duplicate DD is preferably carried out by electroforming, in that the microstructure 11 is first rendered electrically conductive and then metallised, for example with copper. The copper layer is then back-cast, such as with tin, to stabilize the structure, and backfilled with lead or plastic to make embossing punch duplicate DD manageable.
  • a third step (FIG. 4c), the mats M 1 , M 2 ,... And the embossing die duplicates DD 1 , DD 2 ,... Are arranged side by side and firmly joined together by suitable joining techniques, for example gluing, to form an intermediate shape Z to form.
  • a material and embossing punch duplicate pair M 1 , DD 1 or M 2 , DD 2 etc. form a use of the steel gravure printing plate 8 to be produced by means of the intermediate form Z.
  • the microstructures described here are present as negative microstructures 11 ', slightly above the impression plane 9' of the intermediate form Z lie.
  • the printing plate surface 9 can be hardened by nickel plating, chromium plating in a further production step.
  • FIG. 6a An alternative method of manufacturing the printing plate 8 is shown in Figs. 6a to 6e. Accordingly, first the original printing plate O is produced with the intaglio printing structures 10 (FIG. 6a). From the original printing plate O, certain surface areas are subsequently extracted in segments, for example by high-precision milling technology (FIG. 6b). The embossing punch D with the microstructures 11, as shown in FIG. 4 a, is then inserted into the recess 13 thus produced (FIG. 6 c). This requires a precise machining of the embossing die D, so that the microstructures after insertion of the embossing die D in the recess 13 by a defined distance d lower than the surface of the original printing plate O.
  • the thus prepared original printing plate O is then used for embossing Matern M ( Fig. 6d), wherein the embossing, for example, takes place again in the coexpression process.
  • each Mater M is used for further production of a complete benefit of the steel gravure printing plate 8 to be produced. Therefore, as many Matern M 1 , M 2 , M 3 , ..., of the original printing plate O with embedded embossing stamp D (FIG. made, as the finally to be produced steel gravure plate 8 has benefits.
  • the mats M 1 , M 2 , M 3 ,... Are in turn assembled by suitable joining techniques into an intermediate form Z (FIG. 6e), from which the steel gravure printing plate 8 is formed by electroplating.
  • the embossing of the original plate of Fig. 6c into a sufficiently large intermediate mold Z may correspond to the number of desired benefits be repeated.
  • the step of assembling the individual materials M 1 , M 2 , M 3 ,... To the intermediate form Z is omitted.
  • the abovementioned alternative production methods are thus equally suitable for producing positive structures 10, 11 in the finished steel gravure printing plate 8 from the original steel gravure printing structures 10 and original microstructures 11 via "negative structures" 10 ', 11' of the intermediate form Z.
  • the manufacturing method described with reference to FIGS. 6a to 6e is preferable in that insertion of microstructures 11 into any position within a printed image 1 by inserting corresponding dies D in recesses 13 of the original printing plate O (FIG. 6c) is easier than the exact assembly of printing plate duplicates or masters M with embossing stamp duplicates DD (FIG. 4c).
  • FIGS. 6a to 6e can be produced particularly well by a production method according to FIGS. 6a to 6e.
  • a plurality of microstructure embossings 2 form a field of microstructure embossments, in which the individual microstructure embossings 2 are spaced apart from one another.
  • These distances 12 ' are a consequence of the fact that the individual microstructure regions 11 of the steel gravure plate 8 must not exceed a maximum size for protection against damage by a wiper cylinder and are therefore separated from one another by separating webs 12 (FIG. 4d).
  • These dividers 12 extend to the printing plate surface 9 and have a necessary width to accommodate the pressure of the wiping cylinder can.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Methods (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Multi-Process Working Machines And Systems (AREA)
  • Mechanical Operated Clutches (AREA)
  • Rotary Presses (AREA)

Claims (24)

  1. Plaque (8) d'héliogravure en acier ou de taille douce comprenant une surface (9) de la plaque d'impression avec au moins une première région avec des structures (10) d'héliogravure en acier et au moins une deuxième région avec des structures de gaufrage (11), les structures de gaufrage (11) possédant une hauteur et/ou une dimension structurelle latérale d'au moins 100 µm et les composants des structures de gaufrage (11) les plus proches de la surface (9) de la plaque d'impression étant situées à une distance (d) de 20 µm à 100 µm au-dessous de la surface (9) de la plaque d'impression.
  2. Produit intermédiaire (Z) pour fabriquer des plaques (8) d'héliogravure en acier selon la revendication 1, comprenant au moins un premier segment (M) avec des structures négatives (10') d'héliogravure en acier et au moins un deuxième segment (DD) différent du premier segment (M) avec des structures de gaufrage négatives (11') qui possèdent une hauteur et/ou une dimension structurelle latérale ≤ 100 µm, le produit intermédiaire (Z) présentant un plan d'empreinte (9') et les éléments des structures de gaufrage négatives (11') les plus proches du plan d'empreinte (9') étant situées de 20 µm à 100 µm au-delà du plan d'empreinte (9').
  3. Produit intermédiaire (Z) pour fabriquer des plaques d'héliogravure (8) en acier selon la revendication 1, comprenant au moins un segment (M) avec des structures négatives (10') d'héliogravure en acier et des structures de gaufrage négatives (11') qui possèdent une hauteur et/ou une dimension structurelle latérale ≤ 100 µm, le produit intermédiaire (Z) présentant un plan d'empreinte (9') et les composants des structures de gaufrage négatives (11') les plus proches du plan d'empreinte (9') étant situées de 20 µm à 100 µm au-delà du plan d'empreinte (9').
  4. Plaque d'impression originale pour fabriquer un produit intermédiaire selon la revendication 3 avec des structures d'héliogravure en acier (10) et au moins un évidement (13) dans lequel un poinçon de gaufrage (D), avec des structures de gaufrage (11) qui possèdent une hauteur et/ou une dimension structurelle ≤ 100 µm, est inséré de telle sorte que les composants des structures de gaufrage (11) les plus proches de la surface de la plaque d'impression originale O soient situés de 20 µm à 100 µm au-dessous de cette surface.
  5. Objet selon l'une des revendications 1 à 4, dans lequel les structures de gaufrage (11) possèdent une hauteur et/ou une dimension structurelle latérale de l'ordre de 5 à 100 µm.
  6. Objet selon l'e des revendications 1 à 4, dans lequel les structures de gaufrage (11) sont configurées de sorte qu'elles puissent faire apparaître une structure en relief optique de diffraction.
  7. Objet selon la revendication 6, dans lequel les structures de gaufrage (11) possèdent une hauteur et/ou une dimension structurelle latérale de moins de 1 µm.
  8. Objet selon une des revendications 1 à 7, dans lequel les composants des structures de gaufrage (11) les plus proches de la surface de plaque d'impression (9) ou du plan d'empreinte (9') sont situées à au moins 40 µm de la surface de la plaque d'impression (9) ou du plan d'empreinte (9').
  9. Objet selon une des revendications 1 à 8, dans lequel les éléments des structures de gaufrage (11) les plus proches de la surface de plaque d'impression (9) ou du plan d'empreinte (9') sont situées à au moins 60 µm de la surface de plaque d'impression (9) ou du plan d'empreinte (9').
  10. Objet selon une des revendications 1 à 9, dans lequel la région des structures de gaufrage (11) possède une superficie de moins de 400 mm2, de préférence de moins de 100 mm2.
  11. Objet selon une des revendications 1 à 10, dans lequel plusieurs régions avec des structures de gaufrage (11) forment une matrice superficielle de structures de gaufrage.
  12. Objet selon l'une des revendications 1 à 11, dans lequel les structures de gaufrage (11) sont séparées des structures d'héliographie (10) en acier ou d'une autre région avec des structures de gaufrage (11) par une barrette de séparation (12) qui atteint la surface (9) de la plaque d'impression ou le plan d'empreinte (9') et possède une largeur d'au moins 0,5 mm.
  13. Procédé pour fabriquer un objet selon une des revendications 1, 2 ou 5 à 12, comprenant les étapes suivantes :
    - création d'une structure (10) d'héliogravure en acier dans une plaque (O) d'impression originale et fabrication d'au moins une matrice (M) à partir de la plaque (O) d'impression originale,
    - création d'un poinçon de gaufrage (D) avec des structures de gaufrage (11) et fabrication d'au moins un double (DD) poinçon de gaufrage.
    - fabrication d'un produit intermédiaire (Z) avec un plan d'empreinte (9') en disposant côte à côte et en reliant entre eux une ou plusieurs matrices (M, M1, M2 ...) et un ou plusieurs doubles (DD, DD1, DD2 ...) du poinçon de gaufrage de sorte que les composants des structures de gaufrage les plus proches du plan d'empreinte soient situés de 20 µm à 100 µm au-delà du plan d'empreinte (9').
  14. Procédé pour fabriquer un objet selon une des revendications 1 ou 3 à 12, comprenant les étapes suivantes :
    - création de structures d'héliogravure (10) en acier dans une plaque (O) d'impression originale,
    - création d'au moins un évidement dans la surface de la plaque (O) d'impression originale présentant les structures (10) d'héliogravure en acier,
    - création d'un poinçon de gaufrage (D) avec des structures de gaufrage (11),
    - insertion du poinçon de gaufrage (D) dans l'évidement (13) de sorte que les composants des structures de gaufrage (11) les plus proches de la surface de la plaque (O) d'impression originale soient situés de 20 µm à 100 µm au-dessous de cette surface.
  15. Procédé selon la revendication 14 dans lequel, à partir de la plaque (O) d'impression originale, avec le poinçon de gaufrage (D) inséré dans l'évidement (13) sont estampés plusieurs matrices (M1, M2 ...) qui sont disposées l'une à côté de l'autre et sont reliées à un produit intermédiaire (Z).
  16. Procédé selon la revendication 13 ou 15 dans lequel une plaque d'héliogravure (8) en acier est marquée par le produit intermédiaire (Z).
  17. Procédé selon la revendication 16 dans lequel le marquage de la plaque d'héliogravure (8) en acier par le produit intermédiaire (Z) est réalisé par galvanoplastie.
  18. Procédé pour fabriquer une plaque d'héliogravure (8) en acier selon l'une des revendications 1 ou 5 à 12, comprenant les étapes suivantes :
    - création de structures (10) d'héliogravure en acier dans une plaque d'impression d'héliogravure (8) en acier,
    - création de structures de gaufrage (11) dans la plaque d'héliogravure (8) en acier par gravure, de sorte que les composants des structures de gaufrage (11) les plus proches de la surface de la plaque d'héliogravure (8) en acier soient situés de 20 µm à 100 µm au-dessous de cette surface.
  19. Procédé selon une des revendications 14 à 18 dans lequel les structures de gaufrage (11) possèdent une hauteur et/ou une dimension structurelle latérale ≤ 100 µm.
  20. Procédé pour fabriquer un document de sécurité selon le procédé d'héliogravure en acier ou de taille douce en utilisant une plaque d'héliogravure en acier selon l'une des revendications 1 et 5 à 12, comprenant les étapes suivantes :
    - remplissage des structures (10) d'héliogravure en acier de la plaque d'héliogravure (8) en acier avec de l'encre d'imprimerie, sans remplir les structures de gaufrage (11) avec de l'encre d'imprimerie,
    - impression d'un document de sécurité au moyen de la plaque d'héliogravure (8) en acier remplie d'encre d'impression et gaufrage des structures de gaufrage dans une opération d'impression en appliquant une pression qui suffit, d'une part, pour transférer l'encre d'impression des structures (10) d'héliogravure en acier au document de sécurité et, d'autre part, pour estamper le document de sécurité dans la région des structures de gaufrage (11).
  21. Procédé selon la revendication 20 dans lequel le gaufrage du document de sécurité dans la région des structures de gaufrage (11) est un gaufrage à froid.
  22. Procédé selon la revendication 20 dans lequel le document de sécurité présente un revêtement gaufrable (5, 6) et dans lequel le gaufrage du document de sécurité se fait dans la région de ce revêtement gaufrable, de telle sorte que des structures en relief optiques de diffraction sont gaufrées dans le revêtement gaufrable.
  23. Procédé selon la revendication 22 dans lequel le revêtement gaufré est recouvert d'une couche de protection transparente (7).
  24. Document de sécurité avec une image d'héliogravure en acier ou image en taille douce et un gaufrage en microstructure, fabriqué avec une plaque d'héliogravure par zones selon une des revendications 1 ou 5 à 12.
EP03702402.3A 2002-01-11 2003-01-08 Procede d'heliogravure acier d'un document de securite et plaque d'heliogravure en acier et produit intermediaire utilise et leur procede de production Expired - Lifetime EP1467871B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10201032 2002-01-11
DE10201032A DE10201032A1 (de) 2002-01-11 2002-01-11 Stahltiefdruckverfahren zum Herstellen eines Sicherheitsdokuments sowie Stahltiefdruckplatte und Halbzeuge dafür und Verfahren zu deren Herstellung
PCT/EP2003/000112 WO2003057494A1 (fr) 2002-01-11 2003-01-08 Procede d'heliogravure acier d'un document de securite et plaque d'heliogravure en acier et demi-produits utilises et leur procede de production

Publications (3)

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EP1467871A1 EP1467871A1 (fr) 2004-10-20
EP1467871B1 true EP1467871B1 (fr) 2007-07-25
EP1467871B2 EP1467871B2 (fr) 2014-12-03

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Country Status (12)

Country Link
US (2) US7213512B2 (fr)
EP (1) EP1467871B2 (fr)
CN (1) CN100386214C (fr)
AT (1) ATE367934T1 (fr)
AU (1) AU2003205579A1 (fr)
CA (1) CA2472020C (fr)
DE (2) DE10201032A1 (fr)
ES (1) ES2289257T3 (fr)
MY (1) MY136554A (fr)
PT (1) PT1467871E (fr)
RU (1) RU2314209C2 (fr)
WO (1) WO2003057494A1 (fr)

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CA2472020C (fr) 2010-11-23
CN100386214C (zh) 2008-05-07
RU2314209C2 (ru) 2008-01-10
ES2289257T3 (es) 2008-02-01
AU2003205579A1 (en) 2003-07-24
CA2472020A1 (fr) 2003-07-17
EP1467871A1 (fr) 2004-10-20
US7213512B2 (en) 2007-05-08
ATE367934T1 (de) 2007-08-15
RU2004124522A (ru) 2006-01-20
US7690300B2 (en) 2010-04-06
MY136554A (en) 2008-10-31
WO2003057494A1 (fr) 2003-07-17
EP1467871B2 (fr) 2014-12-03
CN1592688A (zh) 2005-03-09
DE50307762D1 (de) 2007-09-06
US20070283824A1 (en) 2007-12-13
PT1467871E (pt) 2007-10-25
DE10201032A1 (de) 2003-07-24
US20050072326A1 (en) 2005-04-07

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