EP2167317B1 - Dispositif d'impression - Google Patents

Dispositif d'impression Download PDF

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Publication number
EP2167317B1
EP2167317B1 EP08757299.6A EP08757299A EP2167317B1 EP 2167317 B1 EP2167317 B1 EP 2167317B1 EP 08757299 A EP08757299 A EP 08757299A EP 2167317 B1 EP2167317 B1 EP 2167317B1
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EP
European Patent Office
Prior art keywords
printing
information item
surface structure
substrate
printing device
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.)
Not-in-force
Application number
EP08757299.6A
Other languages
German (de)
English (en)
Other versions
EP2167317A1 (fr
Inventor
René Hauser
Wolfgang Bock
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.)
3D AG
Original Assignee
3D AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3D AG filed Critical 3D AG
Publication of EP2167317A1 publication Critical patent/EP2167317A1/fr
Application granted granted Critical
Publication of EP2167317B1 publication Critical patent/EP2167317B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
    • B41F11/02—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination for securities
    • 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
    • B42D15/00—Printed matter of special format or style not otherwise provided for

Definitions

  • the invention relates to a printing device with a printing for transmitting optically perceptible information on a medium to be printed by means of a printing fluid, such as a printing ink, wherein a printing surface of the printing plate has a first structure, which is intended for predetermined transmission of the printing fluid to a Beyaksubstrat , Whose first structure is provided here for transmitting a first optically perceptible information on the printing substrate.
  • a printing fluid such as a printing ink
  • printing methods From the field of reproduction technology a variety of printing methods are known. All of these printing methods share the goal of duplicating visually perceptible information.
  • optically directly perceptible information is to be generated, that is to say such information which can be recognized and evaluated by a viewer with the naked eye, ie without the aid of a device such as a microscope or an imaging sensor.
  • information may be data in written form or graphic illustrations.
  • a printing plate is always used, are transmitted with the predetermined information on the medium to be printed, such as paper or cardboard.
  • the printing form contains the information in identical or laterally reversed form. The information is transmitted from the printing form by means of the printing ink on the medium to be printed and displayed.
  • printing methods which are known per se, are known, for example, as gravure printing, letterpress, planographic printing, throughprinting (screen printing), photoprinting, etc. Furthermore, the printing methods are distinguished according to whether the information is transmitted directly from the printing form to the medium to be printed or indirectly via an intermediate carrier to the medium to be printed. Examples of indirect printing methods in which the printing medium is first delivered from the printing form to the intermediate carrier and then from the intermediate carrier to the medium to be printed, are the flexographic printing or the gravure printing. All of these printing methods mentioned in a non-exhaustive list are suitable for the present invention.
  • diffractive structures are used, i. Structures that generate diffraction effects at light incidence of at least certain light frequencies. Such structures are intended for a wide variety of purposes, in particular as decorative elements or as security elements. As decorative elements they are to achieve pleasing optical effects, for example as packaging films or as product labels with which the attention of customers can be directed to the corresponding products provided with such a decorative element.
  • decorative elements they are to achieve pleasing optical effects, for example as packaging films or as product labels with which the attention of customers can be directed to the corresponding products provided with such a decorative element.
  • security elements that are visible or invisible to the naked eye, they are intended to guarantee the authenticity of products, funds, substitutes, credit cards, and the like, because of their forgery potential, which is only possible with very high technical effort. In order to check the authenticity of the objects secured with such security elements, it is determined whether the respective security elements have certain properties or contain certain optically perceptible information.
  • grating structures with lattice spacings in the range of about 200 nm to 1500 nm are required.
  • Such diffractive active structures are generally produced in industrial mass production by first producing so-called master shims with the assistance of photolithographic or laser interferometric methods. From the master shims production shims are then prepared by means of galvanic processes, with which the lattice structures in suitable substrates, such as hot stamping foils, are impressed.
  • the hot stamping foils can be designed, for example, as labels so that the diffraction-optically effective pattern can be applied to any desired backing.
  • microfills or guilloches are also known, which are provided as a security feature, for example microfills or guilloches.
  • the surface structures required to produce microfills and guilloches are at least 10 times larger than the longest wavelength in the visible light spectrum. This facilitates the production of such structures.
  • a steel gravure printing plate and security documents made therewith, such as banknote substrates are previously known.
  • the steel gravure printing plate has first areas in which only steel gravure structures are present, as well as opposite the first areas deeper lying second areas, which have only microstructures.
  • the security documents are printed with printing inks.
  • the microstructures of the steel gravure printing plate are provided for embossing corresponding microstructures in the security documents.
  • the first and second regions are arranged side by side in the steel gravure plate and may, for example, alternately alternate. The first and second regions are made separately from each other and subsequently assembled by assembly to the steel gravure plate.
  • the required high cost can be considered disadvantageous if a substrate is to be both printed with information and provided with a security feature.
  • such processes can not satisfy the limited variability and flexibility in color design. In order to have a certain design appear in certain (primary color) colors, it is necessary to stock films with these colors.
  • the applicability of the prior art methods is essentially limited to those substrates in the surface of which a lattice structure can be imprinted.
  • the invention is therefore based on the object to provide a way by which even the latter regardless of the embossability of a substrate with the greatest possible flexibility in the color selection can be provided with a security element or a decorative element based on the smallest surface structures, in particular diffractive acting structures.
  • the printing surface - in addition to a first surface structure for the transmission of a first optically perceptible information - has a second surface structure, at least partially disposed in the region of the pressure surface in which the first surface structure and here the first surface structure is superimposed, wherein the Structuring of the second surface structure is smaller or more finely structured than the structuring of the first surface structure and the second surface structure contains a perceptible / detectable information or with the second surface structure perceptible / detectable information can be generated.
  • the object is also achieved by a method according to claim 15 and by a printed substrate according to claim 12.
  • the invention thus provides for a multi-scale structuring of the printing surface which, in addition to larger structures, also includes these superposed smallest structures with predetermined geometrical properties.
  • the second, smaller and thus finer surface structure may be suitable for use in conjunction with security elements and be produced on a substrate by printing with advantage.
  • the second structure should be arranged at least partially in those areas of the printing surface, in which also the first structure located.
  • these second structures may be contained in the surfaces of the printing medium, ie in the visible side of the finished printed substrate. Since it is generally the aim in conventional printing processes to obtain surfaces which are as smooth as possible, the invention provides for a measure which is diametrically opposed to the prior art. This does not change the fact that there are processes that include printing, but try to create a surface structure by embossing.
  • This prior art surface structure which differs from the surface structure according to the invention, is achieved in that the substrate to be printed is itself plastically deformed.
  • the first surface structure preferably generates optical information at least substantially without diffraction effects, the content of which is preferably detectable with the naked eye directly or only by automatic text recognition (OCR) or image processing.
  • OCR automatic text recognition
  • the information reproduced by the second surface structure in particular its shape and color (s), can be detected or interpreted either by the naked eye or by machine.
  • Said diffractive second surface structure is advantageously produced on the substrate by means of a printing method, ie printing in which a printing medium, in particular a printing ink, is applied to a printable substrate.
  • a printing method ie printing in which a printing medium, in particular a printing ink, is applied to a printable substrate.
  • the optically perceptible first information is different from the second information differs, but preferably it is at least partially superimposed.
  • the visually perceivable information of the first surface structure may be, for example, a relief, areas or lines that reproduce the perceptible information without optical diffraction.
  • the optically perceivable information of the second surface structure preferably uses the effect of diffracting optically, in particular, different diffraction orders of light to reproduce the optical information contained therein.
  • the latter can, for example various color effects and / or a tilt angle dependent reproduction of characters, graphics and the like included.
  • a particularly advantageous embodiment of the invention provides that the first and the second surface structure contained in a single printing form and are superimposed or combined. In contrast to other solutions, this ensures that the two pieces of information from the first and second surface structure are always precisely matched. This is true even if the substrate should warp during the printing process. Furthermore, with this embodiment according to the invention with only one printing plate, the entire printing can be carried out, which, despite the technically demanding, preferably diffractive, surface structure and in particular despite the accurate arrangement of the two information, keeps the expenditure in connection with the printing process within limits.
  • the second structure is provided for generating a perceptible with the naked eye and / or machine-readable information.
  • embossed, very fine barcodes can be understood, which are perceived both with the naked eye as a diffraction effect, as well as contain a machine-readable information.
  • the information of the first structure should remain perceptible to the naked eye without significant interference.
  • the first information is a text printed with the first structure, then it should remain readable, although in its surface, for example, barcodes can be imprinted, which can be perceived as well as machine-readable both with the naked eye, for example as a color-changing pattern.
  • a reading device known per se can preferably be guided over the printed substrate, wherein the reading device reads out the information of the second surface structure printed on the substrate preferably using printing inks.
  • an electrically conductive and ultraviolet radiation curable printing fluid from Conductive Ink Technology, Cambridge, is used.
  • This will eg a line of eg 1 mm width and 50, for example mm length printed, which is visible to the naked eye and forms a first inventive pattern.
  • This pattern has on its surface as a second pattern a one-dimensional barcode whose strip is formed by rectangular pits of different widths, the width of these pits being for example either 300 nm or 600 nm, and wherein the pits are, for example, 1 mm long and perpendicular to long axis projecting first pattern, and wherein the center of two successive wells has a constant distance of, for example 1200 nm.
  • Such a barcode can be read out with a capacitive read head, as presented by the company JVC for reading out capacitive image plots, the capacitor used for this purpose having a gap of, for example, 200 nm width, which detects the pits.
  • the above first pattern is illuminated with a collimated laser beam, which diffracted by the second pattern described above in different angles - depending on the decency of the above barcode strip. It is conceivable that the first pattern was realized with a magnetic pressure fluid, so that the protruding strips are readable by a miniaturized read head.
  • the printing device provided for producing substrates printed according to the invention with optically perceptible information of the aforementioned second type can have a diffractive structure at least in a partial region of its surface exhibit.
  • the latter is preferably arranged in an area or at the same location, which is also provided for receiving (loading) pressure medium.
  • This at least one area should also serve to transfer non-diffractive optical information to the substrate.
  • the non-diffractive optical information may result from the printing medium, in particular from its color (s) and geometric shape (s).
  • the additional optical information due to the diffractive effect results from the permanently applied to the printing medium, in particular imaged on her, grid structure. Since the surface of the printing medium provided with the diffractive structure forms a visible side of the printing medium applied to the substrate, both optical information can be perceived after the printing process.
  • the invention makes it possible to produce such structures quickly and inexpensively. This applies in particular if the diffractive structure is integrated into a non-diffractive optical information which is also to be generated independently of the diffractive structure, as may be the case, for example, in a packaging design. By the invention it is possible, for example, to dispense with labels with diffractive security elements and still provide such security elements on packaging.
  • any printing method can be used in connection with the present invention in which a printing plate, for example in the manner of a printing plate, is used for printing with a printing medium, on the surface of which a grating structure having an optical diffraction effect or another predetermined superfine structure can be applied.
  • the ink should wet all the structures of the printing surface of the printing plate and permanently retained after the impression on the substrate to be printed on its inherited from the printing surface structuring.
  • Such a printing process is, for example, the gravure printing process and the high-pressure process, in particular flexographic printing. Even with the latter, it is expedient if the ink cures at least partially in the printing line.
  • the second structure in particular a diffractive second structure, may in particular include a security feature that is used to identify or to prove the authenticity of a product, payment means and the like.
  • the printed security feature can here be visible to the naked eye or be designed as a hidden feature that can only be detected with the aid of technical aids, such as microscopes or profilometers.
  • printing device comprises a cylinder 1 of a gravure device whose surface - except for a part of the cylinder surface engaging pressure pattern - is smooth-surfaced and thus can be referred to as a smooth surface.
  • the surface or the cylinder is preferably elastic.
  • the rectangular pattern which can be seen and evaluated with the naked eye in its development, corresponds to a first optical information, for example, the in Fig. 1 shown rectangle.
  • the printing pattern has a multiplicity of smallest images which are introduced in the region of the printing pattern 4 on the surface of the cylinder 1 as recesses.
  • Such surface structures are already known per se, and can-as they usually have size dimensions in the direction parallel to the directions of extension of the surface in the range of 10 ⁇ m to 150 ⁇ m-be referred to as micrometer-scale.
  • Such recordings of the printing form are often referred to in screened gravure as wells.
  • these images are usually executed as a graphic element, for example as a whole, one-to-one printable letters or lines.
  • This second surface structure can therefore as "nanometer scale be designated.
  • the term "second surface structure” should also be understood to mean higher and lower elements whose height differences can be in the range of 5 ⁇ m to 50 nm.
  • the lattice structures of a single or, preferably, multiple shots 2 may provide perceptible information, such as readable characters such as letters or numbers, a graphic, and the like.
  • Fig. 3 and in Fig. 4 are cross sections of a part of a printing plate, such as the impression cylinder 1 from Fig. 1 shown.
  • the section shown from Fig. 3 shows a receptacle 2 in the printing surface of the printing form, which is part of the first surface structure.
  • the receptacle 2 may be part of a gravure relief which is introduced in the printing surface and may be in the form of gravure printing cups.
  • the surface of the receptacle 2 is not smooth-surfaced but is provided with its own predetermined surface structure 3 essentially over its entire recording surface. This microstructure of the second surface structure is thus provided within the gravure relief.
  • the second surface structure 3 is provided as an effective diffractive optical or active structure, in particular, a frequency from a range of 20 lines / mm to 3000 lines / mm, preferably from 800 lines / mm to 2000 lines / mm, may have, with the height differences These structures preferably less than or equal to 2 microns, preferably less than or equal to 1 micron, and more preferably from a range between 200 nm and 600 nm, amount.
  • the surface structure may be formed as a continuous or diskuntinierliche linear grid or cross lattice structure.
  • Such nanometer-scale structures can be produced using different production methods, for example by holographic intereferometric lithography, in particular laser interferometry, e-beam lithography and / or by photolithographic methods.
  • FIG. 4 another possible embodiment of the first and second surface structures is shown schematically.
  • the first surface structure in its printing surface both a gravure relief (recording 2) and a high-pressure relief 9, which may be incorporated by engraving in the printing surface.
  • Both the recessed structures and the raised structures are provided on their surface with second surface structures 3, which in turn are active diffraction optically due to their predetermined structuring.
  • areas between the images may also be provided with a nanometer-scale surface structure (3).
  • the individual sections of the surface structured in this way yield one or more additional perceptible information.
  • This additional perceptible optical information can either be one of the information described above, completely separate, further information or supplement this information.
  • the further information is additional independent information, namely a diffractive barcode designed as an additional security element. This or its information can be detected by machine, for example by a reading device, which preferably automatically checks whether certain properties are present in the security feature.
  • the second optical information is superimposed on the first optical information, the rectangle of the embodiment.
  • the smooth surface of the printing cylinder i.e., the surface of the printing cylinder which lies outside the photographs
  • the second structure of the printing surface - is in this case such that a gravure doctor can slide on the printing surface.
  • the printing surface and its structures can also be designed so that they are suitable for printing and possibly associated embossing operations.
  • Fig. 2 is also highly schematic one with the printing device off Fig. 1 printed substrate 8, for example formed from a polymer film shown.
  • This has a preferably multicolored, first optically perceivable information, which was generated by printing a number of shots 2, wherein in Fig. 2 only a single shot is shown.
  • a nanoscale pattern 7 is imprinted as a second optical information by printing.
  • the ink used may be an ultraviolet-curable formulation provided with photoinitiators.
  • the second surface structure is imaged in the printing ink of the printed substrate and is permanently contained in it due to the curing effect which prevents it from flowing away.
  • a nanoscale structure may preferably also be incorporated in the smooth surface of 2, as they are in Fig. 1 is shown. Such a structure is also printed on the substrate 8 according to the above method.
  • the surface structure of the printing device can be generated by selectively removing the printing plate provided with the first structure; but it can also be additive by the printing plate is provided with a soft stamp with the second structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Claims (17)

  1. Dispositif d'impression comprenant un cliché d'impression pour la transmission d'une information perceptible visuellement sur un support à imprimer au moyen d'un fluide d'impression, comme par exemple une encre d'impression, avec lequel une surface d'impression du cliché d'impression présente une première structure qui est conçue pour une transmission prédéfinie du fluide d'impression sur un substrat d'impression (8), et dont la première structure est prévue pour la transmission d'une première information perceptible visuellement sur le substrat d'impression (8), caractérisé par une deuxième structure de surface de la surface d'impression, laquelle est disposée au moins partiellement dans la zone de la première structure et superposée à celle-ci, la structuration de la deuxième structure de surface étant plus petite que la structuration de la première structure de surface et la deuxième structure de surface contenant une information perceptible visuellement ou une information perceptible visuellement pouvant être produite avec la deuxième structure de surface.
  2. Dispositif d'impression selon la revendication 1, caractérisé en ce que la deuxième structure de surface présente des éléments de structuration dont la taille dans au moins un sens de projection qui s'étend au moins approximativement parallèlement à la surface d'impression est comprise dans la plage inférieure ou égale à 10 µm.
  3. Dispositif d'impression selon la revendication 1 ou 2, caractérisé en ce que les première et deuxième structures sont prévues dans le même cliché d'impression et sont superposées l'une à l'autre.
  4. Dispositif d'impression selon au moins l'une des revendications précédentes, caractérisé en ce que la deuxième structure de surface est prévue pour produire une information visuelle ou optoélectronique.
  5. Dispositif d'impression selon au moins l'une des revendications précédentes, caractérisé en ce que la deuxième structure de surface est à diffraction optique active et contient notamment une structure de lignes sous la forme d'une structure de grille à diffraction optique active.
  6. Dispositif d'impression selon au moins l'une des revendications précédentes, caractérisé par une pluralité de logements de la première structure de surface pour l'arrangement temporaire du fluide d'impression sur le cliché d'impression, au moins une partie de la surface d'au moins quelques uns des logements étant munie de la deuxième structure de surface, laquelle est prévue pour restituer ou produire les deuxièmes informations.
  7. Dispositif d'impression selon au moins l'une des revendications précédentes, caractérisé en ce que le cliché d'impression, notamment la surface d'impression, contient un matériau souple.
  8. Dispositif d'impression selon au moins l'une des revendications précédentes, caractérisé par un moyen pour faire durcir le fluide d'impression.
  9. Dispositif d'impression selon la revendication 8, caractérisé en ce que le moyen de durcissement est disposé dans ou derrière le cliché d'impression, un rayonnement, notamment un rayonnement UV, pouvant ainsi être introduit dans le fluide d'impression à travers le cliché d'impression avec le moyen de durcissement.
  10. Substrat imprimé (8), sur lequel est appliqué un fluide d'impression, notamment une encre d'impression, pour produire une première information perceptible visuellement, caractérisé en ce que le fluide d'impression restitue la première information visuelle au moins dans certaines portions sur le substrat (8) et le fluide d'impression, dans la même portion que celle dans laquelle est présente la première information visuelle, est doté d'une structure de surface qui restitue une deuxième information visuelle et qui est au moins partiellement superposée à la première information visuelle.
  11. Substrat imprimé (8) selon la revendication 10, caractérisé en ce que la structure de surface est à diffraction optique active.
  12. Substrat imprimé (8) selon la revendication 10 ou 11, caractérisé par la structure de surface dont la structuration prédéfinie présente des éléments de surface qui présentent, au moins dans un sens de projection qui s'étend pour l'essentiel parallèlement à la surface du fluide d'impression, une taille qui est inférieure ou égale à 10 µm et qui sont prévus pour la restitution ou la production de la deuxième information visuelle.
  13. Procédé d'impression d'un substrat (8), avec lequel un fluide d'impression, comme par exemple une encre d'impression, est appliqué sur le substrat (8) et une première information perceptible visuellement est transférée sur une portion de surface du substrat (8) en utilisant un dispositif d'impression muni d'un cliché d'impression, caractérisé en ce qu'une structure de surface à diffraction optique active est produite au moins dans certaines portions dans le fluide d'impression avec le dispositif d'impression, laquelle est appliquée sur la même portion de surface que celle qui contient aussi la première information perceptible visuellement et est au moins partiellement superposée à celle-ci.
  14. Procédé selon la revendication 13, caractérisé en ce que sont produits des éléments de surface prédéfinis, lesquels présentent, au moins dans un sens de projection qui s'étend pour l'essentiel parallèlement à la surface du fluide d'impression, une taille qui est inférieure ou égale à 10 µm et lesquels sont prévus pour la restitution ou la production d'une deuxième information.
  15. Procédé selon la revendication 13 ou 14, caractérisé en ce que la deuxième information est aussi appliquée sur le substrat d'impression (8) simultanément à l'application de la première information sur le substrat d'impression (8).
  16. Procédé selon au moins l'une des revendications 13 à 15, caractérisé en ce que la deuxième information est appliquée au moins dans certaines portions dans une zone du substrat d'impression (8) dans laquelle est également appliquée la première information.
  17. Procédé selon au moins l'une des revendications précédentes 13 à 16, caractérisé en ce qu'un rayonnement est introduit dans le fluide d'impression qui se trouve sur le cliché d'impression afin de le durcir.
EP08757299.6A 2007-07-09 2008-07-09 Dispositif d'impression Not-in-force EP2167317B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH11072007 2007-07-09
PCT/CH2008/000307 WO2009006749A1 (fr) 2007-07-09 2008-07-09 Dispositif d'impression

Publications (2)

Publication Number Publication Date
EP2167317A1 EP2167317A1 (fr) 2010-03-31
EP2167317B1 true EP2167317B1 (fr) 2014-09-17

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Application Number Title Priority Date Filing Date
EP08757299.6A Not-in-force EP2167317B1 (fr) 2007-07-09 2008-07-09 Dispositif d'impression

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EP (1) EP2167317B1 (fr)
AU (1) AU2008274799A1 (fr)
WO (1) WO2009006749A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3571062T3 (pl) * 2017-04-18 2021-02-08 Orell Füssli AG Dokument zabezpieczony mający okno i strukturę refrakcyjną

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19845436C5 (de) * 1998-10-02 2015-02-26 Giesecke & Devrient Gmbh Stichtiefdruckverfahren zum Drucken von aneinander grenzenden Farbflächen unterschiedlicher Farbschichtdicke, Datenträger mit im Stichtiefdruckverfahren erzeugtem Druckbild, Druckplatte und Verfahren zum Herstellen einer Druckplatte
DE10015097A1 (de) * 2000-03-28 2001-10-04 Giesecke & Devrient Gmbh Im Stichtiefdruck bedruckter Datenträger
DE10044711A1 (de) * 2000-09-08 2002-03-21 Giesecke & Devrient Gmbh Wertdokument
DE10162050A1 (de) * 2001-12-17 2003-07-03 Giesecke & Devrient Gmbh Wertdokument
DE10201032A1 (de) 2002-01-11 2003-07-24 Giesecke & Devrient Gmbh Stahltiefdruckverfahren zum Herstellen eines Sicherheitsdokuments sowie Stahltiefdruckplatte und Halbzeuge dafür und Verfahren zu deren Herstellung
GB0401370D0 (en) * 2004-01-21 2004-02-25 Rue De Int Ltd Security device

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WO2009006749A1 (fr) 2009-01-15
EP2167317A1 (fr) 2010-03-31
AU2008274799A1 (en) 2009-01-15

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