EP1748900B1 - Tiefdruckplatte - Google Patents

Tiefdruckplatte Download PDF

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Publication number
EP1748900B1
EP1748900B1 EP05714710A EP05714710A EP1748900B1 EP 1748900 B1 EP1748900 B1 EP 1748900B1 EP 05714710 A EP05714710 A EP 05714710A EP 05714710 A EP05714710 A EP 05714710A EP 1748900 B1 EP1748900 B1 EP 1748900B1
Authority
EP
European Patent Office
Prior art keywords
furrow
plate
elements
side walls
furrow elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05714710A
Other languages
English (en)
French (fr)
Other versions
EP1748900A1 (de
Inventor
Jacques Perrier
Laurent Mathys
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.)
KBA Notasys SA
Original Assignee
KBA Giori SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34854741&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1748900(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by KBA Giori SA filed Critical KBA Giori SA
Priority to EP05714710A priority Critical patent/EP1748900B1/de
Publication of EP1748900A1 publication Critical patent/EP1748900A1/de
Application granted granted Critical
Publication of EP1748900B1 publication Critical patent/EP1748900B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/48—Controlling the manufacturing process
    • B42D25/485—Controlling the manufacturing process by electronic processing means
    • 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
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/045—Mechanical engraving heads
    • 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
    • B41M1/10—Intaglio printing ; Gravure printing
    • 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
    • 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
    • B42D2035/08—
    • B42D2035/20—
    • 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

Definitions

  • the present invention concerns an engraved plate for intaglio printing of sheets of security papers, comprising a plate portion generating on each said security paper a control element upon intaglio printing.
  • the invention relates also to a process for manufacturing an aforesaid plate and to a security paper imprinted by means of an aforesaid plate.
  • security paper primarily designates here banknotes, but also designates documents of any kind having a financial value, such as cheques, lottery tickets, title deeds and the like, or identity documents such as passports, ID cards, driving licences and the like.
  • control element designates any sign readable either by human beings or by a specific machine.
  • Such control elements comprise individualised identity markings, such as serial numbers or code bars. They also comprise markings that are difficult to manufacture and to reproduce, but which may be checked as far as quality parameters like colorshade, thickness, consistency and the like are concerned.
  • optically variable markings which may be easily checked by the human eye upon merely handling an illuminated security paper, that is to say by lay users without necessitating a specific detection equipment, are particularly valuable in so far as such control elements cannot be reproduced by means of commonly available equipments, such as photocopiers, scanners and similar copying machines.
  • intaglio printing is a preferred technique, because it provides prints of high quality. Additionally, intaglio printing provides an embossing of the printed sheet which may be felt by the human hand. Its feel is different from the feel of a sheet imprinted by another technique. Thus, it provides a quite simple control element to the touch against coarse counterfeits like photocopies.
  • EP 0429782 discloses a process to emboss a film applied on a security document, said film comprising an optically variable microstructure, typically a patch with a diffracting microstructure, with a tridimensional profile.
  • US 3,887,742 discloses a process to emboss a substrate to form a plurality of lines providing an asymmetric profile and wherein the space between said lines are filled with ink.
  • the intaglio pattern elements comprise at least two arrays, one of which constitutes an image of readily recognisable form, and the other array constitutes a background.
  • the two arrays differ in orientation or in overall sizes, that is to say in heights and spacings of the ribs. Varying orientation and heights of the pattern elements, in combination with inking, results in an image portion which blends with the background portion if viewed from one range of angles of view but which appears as a readily recognisable image from another range of angles of view. Such an image appearing or disappearing when the angle of view is changed is called a "latent image” or a "transient image”.
  • an observer tilts a security document bearing a control element of this type he may see an image distinguishable from the background when he sees the surface of the security paper from an acute angle of view.
  • the image disappears at approximately normal angles of view, and the same image appears again at acute angles of view opposite the first acute angles of view.
  • the observer may not see such image at acute angles of view, the image appearing only at approximately normal angles of view.
  • a second problem is that great care must be taken to create an image that is clearly visible from one angle of view, and essentially invisible from a second angle of view. Unless great care is taken in creating the image, it will be more or less visible from any angle of view.
  • the present inventors have found that not only the overall size and the angles from which said embossings are illuminated and viewed, but also the shape of the embossings may determine the visual aspect of the security paper surface: this aspect varies depending upon the slope of the flanks of the embossings.
  • the inventors found in particular that a sheet area bearing a set of asymmetric embossings, one flank of which has a high average slope and an other one has a low average slope, if viewed sideways, may appear dark if viewed from one side of the embossings and appear bright if viewed from the other side.
  • the invention is directed to a security paper bearing a control element consisting of an area portion obtained by intaglio printing or embossing, wherein said portion is provided with at least one first set of asymmetrical embossing elements, each said embossing element having a first flank and an opposite second flank, the average slope of said first flank being different from the average slope of said second flank, wherein the slopes of said first flanks of said set of embossing elements are substantially equal amongst themselves and the slopes of said second flanks of said set of embossing elements are substantially equal amongst themselves.
  • control element when the angle of view of an observer examining the security paper varies from a first acute angle of view to opposite acute angles of view, the observer will observe the following sequence:
  • the shape of the embossings of a security paper surface are directly determined by the shape of the cuts of the intaglio printing plate, namely the furrow elements engraved in the intaglio plate, by means of which the security paper may be imprinted.
  • an object of the invention is an engraved plate for intaglio printing or embossing of sheets of security papers, comprising a plate portion generating on each said security paper a control element, wherein said plate portion is provided with at least one first set of asymmetrical furrow elements defining a first area conveying information, each said furrow element of the first set having a first side wall and an opposite second side wall, the average slope of said first side wall being different from the average slope of said second side wall, wherein the average slopes of said first side walls of said first set of furrow elements are substantially equal amongst themselves and the average slopes of said second side walls of said first set of furrow elements are substantially equal amongst themselves, wherein said plate portion is further provided with a second set of asymmetrical furrow elements defining a second area, each furrow element of the second set having a first side wall and an opposite second side wall, the average slope of said first side wall being different from the average slope of said second side wall, wherein the average slope slope
  • the average slope of said first walls has a value of between 60° and 90° and the average slope of said second side walls has an average value of between 1° and 50°, preferably between 10° and 25°.
  • said first area defines an alphanumerical or an other easily recognisable graphical sign.
  • the furrow elements providing the optical effect according to the invention may present various configurations. They may consist of elongated straight segments, elongated curved segments, in particular portions of circles, short segments or pinpoint asymmetrical recesses, which may be considered and termed as dots. Furrow segments generate ribs with a steep flank and a gentle flank; furrow dots generate asymmetrical pyramidal toothlike protrusions on the security paper surface.
  • the furrow elements are preferably contiguous. If the furrow elements are segments, the latter are preferably parallel and contiguous over their whole length or at least a part thereof. If the furrow elements are in form of dots, they may be spread over an area, preferably almost in point contact the ones with the others.
  • At least a second set of furrow elements having opposite side walls of unequal average slopes and defining a second area is further be provided, the side walls with the lower average slope of the furrow elements of the first set having a different orientation that the side walls with the lower average slope of the furrow elements of the second set.
  • the furrow elements of the second set may again advantageously be furrow segments or have the form of dots. Depending on the way the at least two distinct sets of furrow elements are combined, one can enhance the optical effect created by the first set or convey two distinct informations.
  • the furrow segment of said second set may be parallel to the furrow segments of the first set, the side walls with the lower slope of the furrow segments of said first set and the side walls with the lower slope of the furrow segments of said second set being oriented in opposite directions.
  • said second area may surround said first area, thereby constituting a background for the image defined by the first area.
  • the second area will convey basically the same information as the first area, however in a contrasting manner.
  • the invention permits to realise a sort of flip-flop effect.
  • Both the image area and the background area may be uniformly inked by means of the same colour prior to embossing the sheet with a dry plate. This will not prevent the flip-flop effect, but the image will be impossible to copy by means of a photocopy machine.
  • the effect will be particularly enhanced when the side walls with the lower average slope of the furrow elements of the first set and the side walls with the lower average slope of the furrow elements of the second set are oriented in opposite direction.
  • the plate portion generating the control element may comprise a second set of asymmetrical furrow elements having first and opposite second side walls with unequal slopes, the side walls with the lower slope of the furrow elements of said first set and the side walls with the lower slope of the furrow elements of said second set having different orientations, advantageously opposite orientations.
  • said plate portion comprises a first, a second, a third and a fourth set of asymmetrical furrow elements in form of dots, each set with their respective side walls with the lower slope orientated crosswise to the corresponding side walls of two other sets.
  • Said first, second, third and fourth set define a first, second, third and fourth area.
  • Said areas may overlap at least partially; in the overlapping portions of said areas, the dots of said first, second, third and/or fourth set are arranged in alternating relationships.
  • intaglio plates are a long and complex process, which begins with the hand engraving of a steel or copper plate, making a copy of this first plate, adding by chemical engraving other elements, making several plastic imprints of this final original plate, welding them together, and going through an important number of galvanic bathes to obtain the final product, namely the intaglio printing plate to be mounted on the machine.
  • Some improved processes permit to shorten the manufacturing process.
  • EP 0 322 301 proposes an electro-erosion step for engraving intaglio plates.
  • WO 96/26466 describes a method of manufacturing polymeric precursor plates of intaglio printing plates by photo-ablation. The aforesaid methods provide cuts of sufficient quality as far as the macroscopic optical aspect of the printed image is concerned, but do not permit a precise control of the microscopic shape of the cuts, in particular control of the slopes of the flanks or sidewalls of the cuts differently for one flank and the opposite flank.
  • a further object of the invention is a process of manufacturing an engraved plate as defined above, wherein an non-engraved plate is submitted to a programmed engraving process by a computer controlled engraving tool, the slope of the side walls of the furrow elements engraved by said tool being programmed by said computer.
  • the Applicant's co-pending Application WO 03/103962 discloses a method of manufacturing an engraved plate for intaglio printing of sheets of security papers, wherein a non-engraved plate is submitted to a programmed engraving process by a computer controlled engraving tool, wherein said programmed engraving process engraves said non-engraved plate according to the three-dimensional guiding pixel data (X, Y, Z) of a master depth-map of one said sheet, wherein said master depth-map is generated by at least one computer stored original depth-map, said original depth-map consisting of a three-dimensional raster image of at least a portion of one said security paper, and wherein an elementary engraving step is associated to each three-dimensional pixel data.
  • the engraving tool is a laser-engraving machine.
  • the plate engraved by this process may be an intaglio printing plate, which is generally a metallic plate.
  • the engraved plate may also be a precursor of an intaglio printing plate, and may be made of or comprise an upper layer of polymer.
  • the intaglio printing plate is thereafter derived from the precursors by techniques known in the art.
  • the plate may be flat or cylindrical.
  • the engraving of one furrow element profile necessitates a plurality of adjustable elementary engraving steps and therefore the process permits to engrave stepwise the side walls of the furrow elements, the respective depths (Z) of adjacent steps determining the average slope of a said side wall.
  • Fig. 1a, 1b and 1c show profiles of grooves engraved in an intaglio plate by traditional methods:
  • grooves such as those shown in Fig. 1a, 1b and 1c are filled with printing ink, and the paper sheet and the plate are pressed together under high pressure.
  • the paper penetrates into the grooves and fills them more or less.
  • the surface of the paper bears an embossed rib reproducing approximately the shape of the groove.
  • the reproduction of the shape of the groove is approximate, in as more as relaxation occurs to a certain extent upon pressure release.
  • the profile of the remaining rib is therefore an intermediate shape between a U and a V.
  • this profile is substantially symmetric, like the engraved grooves of Fig. 1a, 1b and 1c .
  • Fig. 2a, 2b and 2c illustrate profiles of furrow elements embodying the present invention:
  • Fig. 4 illustrates the optical effect of the invention on the user's eye.
  • Fig. 4 represents schematically two contiguous parallel ribs under illumination by a light beam perpendicular to the security paper sheet.
  • the light source is schematically represented by a little sun at the top of the figure.
  • a human eye is schematically represented both on the left side and on the right side of Fig. 4 . It may be easily seen from the figure that much more light is reflected and sent to the eye on the left side than to the eye on the right side, and thus when the security paper is viewed from the side to which the smooth flank of the ribs are oriented, it gives an impression of brightness, whereas, when viewed from the opposite side, it gives an impression of darkness.
  • the difference in the optical aspects between the dark and the bright sides is enhanced if the portion of the security paper sheet bearing the control element according to the invention is imprinted with a dark ink, black, dark brown and the like, selected among brilliant and satin-finished inks; the effect appears less striking when dull ink is used.
  • Fig. 5 represents schematically an enlarged view of a part of a control element comprising an area A1 where the smooth flanks are oriented to the left, and an area A2 where the smooth flanks are oriented to the right of the figure.
  • Area A1 occupies the upper left side of the figure, and area A2 occupies the right side and the lower side of the figure.
  • A1 appears bright, and A2 appears dark, and vice versa from the right side; since both the ribs of areas A1 and A2 are asymmetrical, the contrast bright/dark is enhanced.
  • Fig. 6a, 6b, 6c and 6d show a first example of a control element obtained by means of an area of a plate engraved with two sets of parallel furrow segments.
  • the first set forms the letters CTIP and the second set surrounds the area occupied by the letters, thus forming the background.
  • the slopes of the side walls are arranged so that in the embossed control element, the portions of the ribs corresponding to the letters CTIP present their smooth flank to the left side of the figure, whereas the rib portions forming the background present their smooth flank to the right side of the figures.
  • the control element is always illuminated from a normal angle to the sheet. In the four positions shown by Fig.
  • Fig. 7a, 7b, 7c and 7d show a further example of embossings obtained by means of furrow segments according to the invention.
  • the four positions of the observer and the position of the light source are the same as in Fig. 6a, 6b, 6c and 6d .
  • a first set of furrow segments generates ribs with a smooth flank portion oriented to the left, so that, if they are viewed from the left side, bright letters ONE appear.
  • a second set of furrow elements in offset position versus the first set of furrow elements, produces embossed rib segments with their smooth flank oriented to the right, so that, viewed from the right side, the letters CTIP appear.
  • the remaining surface of the rectangular control element bears mere symmetric embossings with steep flanks.
  • Fig. 7c and 7d show that viewing from the top or the bottom side do not provide any contrasted image.
  • Fig. 8 shows schematically a portion of a security paper sheet on which rectangular pyramidal embossings of the dot type are distributed.
  • the pale portion of each rectangle represents schematically the smooth flank, and the black portion represents schematically the opposite steep flank. Obviously, the two other flanks are also steep.
  • the rectangular dots are arranged in repeating groups of four dots, each dot being disposed crosswise to the neighbours, providing a periodically alternating relationship.
  • the orientation of the dots at the left lower and upper right corners of Fig. 8 differs from the rest of the figure.
  • the dots whose smooth flanks are oriented in the same direction, generate altogether an image which may represent a letter, a figure, or any other graphical sign.
  • Those skilled in the art will easily understand that by this arrangement in groups of four dots, four different signs may be generated at the same location on the security paper sheet, each of the four signs appearing as a bright sign, surrounded by a darker background, only when viewed in one specific direction.
  • Fig. 9a, 9b, 9c and 9d present an example of a control element combining several overlapping sets of dots.
  • the position of the light source and the four positions of the observer are the same as in the preceding examples.
  • a first set of dots is spread over an area subdivided in four subareas, so as to correspond to the four letters CTIP; the smooth flanks of the first set are oriented to the left.
  • a second set of dots is spread over the remaining area of the control element, and their smooth flanks are oriented into the opposite direction.
  • the letters CTIP appear respectively bright on a dark background and dark on a brighter background when viewed respectively from the left and from the right.
  • a third set of dots is spread over an area subdivided into three subareas, so as to form the letters ONE.
  • the smooth flanks of the third set of dots are oriented to the bottom of Fig. 9a, 9b, 9c and 9d , that is to say at 90° vs. the first and second set.
  • a fourth set of dots is spread over the remaining surface of the control element, their smooth flanks being oriented in the opposite direction of those of the third set.
  • Fig. 10a, 10b, 10c and 10d The position of the light source and the four positions of the viewer are the same as above.
  • the first set of dot-like embossings present their smooth flank to the bottom, so as to exhibit the word ONE in bright shade when observed from that direction.
  • the second set of dot-like embossings present their smooth flank to the left, so that the word TWO is distinguishable when the paper is observed at an acute angle from that direction.
  • the third set of dot-like embossings present their smooth flank to the top, permitting to distinguish the word THREE.
  • the fourth set of dots present their smooth flank to the right, so that the word FOUR appears upon viewing from said direction.
  • the embossings that do not participate to any of the signs ONE, TWO, THREE, FOUR are mere symmetric embossings with steep flanks.
  • the dots of a dot assembly forming a control element are not limited to dots having a rectangular base.
  • round, triangular or hexagonal bases with corresponding conical or pyramidal asymmetric protrusions can be made, so that the most striking differences in optical aspects are not viewed from opposite directions or directions being crosswise, but at different angles.
  • the dot-shaped furrow elements may be shaped as asymmetric concial or pyramidal engravings with at least one side wall portion having a more gentle slope than other side wall portions, so as to generate a varying optical effect depending on the angle of view.
  • control elements are made by merely embossing a homogeneously pre-inked flat surface by means of a dry plate.
  • a background layer on the security paper, prior to embossing, by an offset or silk-screen printing process or by a stamping process.
  • This background layer should preferably be a dark-coloured layer, an optically variable layer or a metallized layer, as this will enhance the optical effect of the embossing.
  • Polychrome effects may be obtained by simultaneously printing and embossing the surface of a security paper sheet by means of an inked intaglio plate bearing asymmetric cuts according to the invention.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Printing Methods (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Organic Insulating Materials (AREA)

Claims (37)

  1. Gravierte Platte für den Intaglio-Druck oder das Prägen von Sicherheitspapierbögen mit einem Plattenteil, der auf jedem Sicherheitspapier ein Kontrollelement erzeugt,
    wobei der Plattenteil mit mindestens, einem ersten Satz asymmetrischer Furchenelemente versehen ist, die einen ersten, Information übertragenden Bereich bilden, wobei jedes Furchenelement des ersten Satzes eine erste Seitenwand und eine gegenüberliegende zweite Seitenwand hat und die durchschnittliche Steilheit der ersten Seitenwand sich von der der zweiten Seitenwand unterscheidet;
    wobei die durchschnittlichen Steilheiten der ersten Seitenwände des ersten Satzes von Furchenelementen untereinander im Wesentlichen gleich sind und die durchschnittlichen Steilheiten der zweiten Seitenwände des ersten Satzes von Furchenelementen untereinander im Wesentlichen gleich sind;
    wobei der Plattenteil weiterhin mit einem zweiten Satz asymmetrischer Furchenelemente versehen ist, die einen zweiten Bereich bilden, wobei jedes Furchenelement des zweiten Satzes eine erste Seitenwand und eine gegenüberliegende zweite Seitenwand hat und die durchschnittliche Steilheit der ersten Seitenwand sich von der der zweiten Seitenwand unterscheidet;
    wobei die durchschnittlichen Steilheiten der ersten Seitenwände des zweiten Satzes von Furchenelementen untereinander im Wesentlichen gleich sind und die durchschnittlichen Steilheiten der zweiten Seitenwände des zweiten Satzes von Furchenelementen untereinander im Wesentlichen gleich sind; und
    wobei die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des ersten Satzes und die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des zweite Satzes verschieden gerichtet sind.
  2. Platte nach Anspruch 1, bei der der erste Bereich ein alphanumerisches oder ein grafisches Zeichen bildet.
  3. Platte nach Anspruch 1 oder 2, bei der die asymmetrischen Furchenelemente des ersten Satzes parallele Furchenabschnitte sind, die über den ersten Bereich verlaufen.
  4. Platte nach Anspruch 1 oder 2, bei der die asymmetrischen Furchenelemente des ersten Satzes die Form von Punkten haben, die über den ersten Bereich verteilt sind.
  5. Platte nach Anspruch 3 oder 4, bei der die parallelen Furchenelemente des ersten Satzes aneinandergrenzen.
  6. Platte nach Anspruch 4, bei der jeder Punkt des ersten Satzes als asymmetrische konische oder pyramidenförmige Gravur gestaltet ist, bei der mindestens ein Seitenwandteil weniger steil ist als andere Seitenwandteile.
  7. Platte nach Anspruch 1, bei der die asymmetrischen Furchenelemente des zweiten Satzes parallele Furchenabschnitte sind, die über den zweiten Bereich verlaufen.
  8. Platte nach Anspruch 1, bei der die asymmetrischen Furchenelemente des zweiten Satzes die Form von Punkten haben, die über den zweiten Bereich verteilt sind.
  9. Platte nach Anspruch 7 oder 8, bei der die parallelen Furchenelemente des zweiten Satzes aneinandergrenzen.
  10. Platte nach Anspruch 4, bei der jeder Punkt des zweiten Satzes als asymmetrische konische oder pyramidenförmige Gravur gestaltet ist, bei der mindestens ein Seitenwandteil weniger steil ist als andere Seitenwandteile.
  11. Platte nach Anspruch 1, bei der sowohl die Furchenelemente des ersten Satzes als auch die Furchenelemente des zweiten Satzes parallele Furchenabschnitte sind, die über den ersten bzw. den zweiten Bereich verlaufen.
  12. Platte nach Anspruch 11, bei der die Furchenabschnitte des zweiten Satzes parallel zu denen des ersten Satzes liegen und die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenabschnitte des ersten Satzes und die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des zweiten Satzes entgegengesetzt gerichtet sind.
  13. Platte nach Anspruch 1, bei der die Furchenelemente des ersten Satzes und die des zweiten Satzes die Form von Punkten haben, die über den ersten bzw. den zweiten Bereich verteilt sind.
  14. Platte nach Anspruch 13, bei der die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des ersten Satzes und die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des zweiten Satzes entgegengesetzt gerichtet sind.
  15. Platte nach Anspruch 1, 11 oder 13, bei dem der zweite Bereich den ersten Bereich umgibt und auf kontrastierende Weise die gleiche Information wie der erste Bereich vermittelt.
  16. Platte nach Anspruch 1, 11 oder 13, bei der der zweite Satz Furchenelemente gegen den ersten Satz Furchenelemente versetzt so angeordnet ist, dass der erste und der zweite Bereich sich teilweise überlappen.
  17. Platte nach Anspruch 16, bei der der zweite Bereich Information vermittelt, die sich von der vom ersten Bereich übermittelten unterscheidet.
  18. Platte nach Anspruch 17, bei der der zweite Bereich ein alphanumerisches oder ein grafisches Zeichen bildet.
  19. Platte nach Anspruch 13 weiterhin mit einem dritten Satz asymmetrischer Furchenelemente in Form von Punkten, die über einen dritten Bereich verteilt sind, wobei jedes Furchenelement des dritten Satzes eine erste Seitenwand und eine gegenüberliegende zweite Seitenwand hat und die durchschnittliche Steilheit der ersten Seitenwand sich von der der zweiten Seiten unter scheidet,
    wobei die Steilheiten der ersten Seitenwände des dritten Satzes Furchenelemente untereinander im Wesentlichen gleich sind und die Steilheiten der zweiten Seitenwände des dritten Satzes Furchenelemente untereinander im Wesentlichen gleich sind, und
    wobei die Seitenwände mit der niedrigeren durchschnittlichen Steilheit der Furchenelemente des dritten Satzes anderes gerichtet sind als die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des ersten und des zweiten Satzes.
  20. Platte nach Anspruch 19 weiterhin mit einem vierten Satz asymmetrischer Furchenelemente in Form von Punkten, die über einen vierten Bereich verteilt sind, wobei jedes Furchenelement des vierten Satzes eine erste Seitenwand und eine gegenüberliegende zweite Seitenwand hat und die durchschnittliche Steilheit der ersten Seitenwand sich von der der zweiten Seitenwand unterscheidet,
    wobei die Steilheiten der ersten Seitenwände des vierten Satzes Furchenelemente untereinander im Wesentlichen gleich sind und die Steilheiten der zweiten Seitenwände des vierten Satzes Furchenelemente untereinander im Wesentlichen gleich sind; und
    wobei die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des vierten Satzes anders gerichtet sind als die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des ersten, des zweiten und des dritten Satzes.
  21. Platte nach Anspruch 20, bei der die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des dritten Satzes und die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des vierten Satzes entgegengesetzt gerichtet sind.
  22. Platte nach Anspruch 20, bei der die Seitenwände mit der kleineren durchschnittlichen Steilheit der Furchenelemente des ersten, des zweiten, des dritten und des vierten Satzes kreuzweise angeordnet sind.
  23. Platte nach Anspruch 20, 21 oder 22, bei der der erste, der zweite, der dritte und der vierte Bereich sich mindestens teilweise überlappen.
  24. Platte nach Anspruch 23, bei der der erste, der zweite, der dritte und der vierte Bereich jeweils ein eigenes alphanumerischer oder grafisches Zeichen bilden.
  25. Platte nach einem der vorgehenden Ansprüche, bei der die Steilheit der ersten Wände einen Durchschnittswert zwischen 60° und 90° und die Steilheit der zweiten Seitenwände einen Durchschnittswert zwischen 1° und 50°, insbesondere 10° und 25° hat.
  26. Platte nach einem der vorgehenden Ansprüche, bei der die Furchenelemente eine Breite zwischen 5 µm und 500 µm haben.
  27. Platte nach einem der vorgehenden Ansprüche, bei der die Furchenelemente eine Tiefe zwischen 5 µm und 100 µm haben.
  28. Verfahren zum Herstellen einer gravierten Platte nach einem der vorgehenden Ansprüche, bei der eine nicht gravierte Platte einer programmierten Gravur mittels eines Gravierwerkzeugs unterzogen wird, das ein Rechner steuert, wobei die durchschnittliche Steilheit der Seitenwände der von diesem Werkzeug gravierten Furchenelemente vom Rechner programmiert ist.
  29. Verfahren nach Anspruch 28, bei dem der programmierte Gravurprozess die ungravierte Platte nach den dreidimensionalen führenden Bildpunktdaten (X, Y, Z) eines Master-Tiefenbilds ("master depth-map") eines der Bögen graviert, wobei das Master-Tiefenbild durch mindestens ein abgespeichertes Original-Tiefenbild generiert wird, das aus einem dreidimensionalen Rasterbild mindestens desjenigen Plattenteils besteht, der das Kontrollelement auf dem Sicherheitspapier erzeugt.
  30. Verfahren nach Anspruch 29, bei dem das Gravurwerkzeug ein Laser-Gravurwerkzeug ist.
  31. Verfahren nach Anspruch 29 oder 30, bei dem die vom Gravurwerkzeug eingravierten resultierenden Furchenelemente ein Stufenprofil zeigen.
  32. Verfahren nach Anspruch 31, bei dem das Stufenprofil Einzelstufen einer Größe von weniger als 5 µm zeigt.
  33. Sicherheitspapier mit einem Kontrollelement, das durch Intaglio-Druck auf einem Bogen mittels einer gravierten Intaglio-Platte nach einem der Ansprüche 1 bis 27 erhalten wurde.
  34. Sicherheitspapier mit einem Kontrollelement, das durch Prägen eines Bogens mittels einer gravierten Intaglio-Platte nach einem der Ansprüche 1 bis 27 erhalten wurde.
  35. Sicherheitspapier nach Anspruch 34, bei dem das Kontrollelement auf eine Hintergrundschicht geprägt ist, die vor dem Prägen auf das Sicherheitspapier aufgetragen wurde.
  36. Sicherheitspapier nach Anspruch 35, bei dem die Hintergrundschicht eine dunkelfarbige Schicht, eine optisch variable Schicht oder eine metallisierte Schicht ist.
  37. Sicherheitspapier nach Anspruch 35 oder 36, bei dem die Hintergrundschicht auf das Sicherheitspapier durch Offset- oder Siebdruck oder durch Stempeln aufgetragen wurde.
EP05714710A 2004-03-24 2005-03-23 Tiefdruckplatte Not-in-force EP1748900B1 (de)

Priority Applications (1)

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EP05714710A EP1748900B1 (de) 2004-03-24 2005-03-23 Tiefdruckplatte

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EP04405179A EP1580020A1 (de) 2004-03-24 2004-03-24 Stichtiefdruckplatte
PCT/CH2005/000168 WO2005090090A1 (en) 2004-03-24 2005-03-23 Intaglio printing plate
EP05714710A EP1748900B1 (de) 2004-03-24 2005-03-23 Tiefdruckplatte

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EP1748900A1 EP1748900A1 (de) 2007-02-07
EP1748900B1 true EP1748900B1 (de) 2008-05-21

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EP2119527A1 (de) * 2008-05-16 2009-11-18 Kba-Giori S.A. Verfahren und System zur Herstellung von Triefdruckplatten für die Herstellung von Wertzeichenpapieren
FR2942811B1 (fr) * 2009-03-04 2011-05-06 Oberthur Technologies Element de securite pour document-valeur.
DE102010047250A1 (de) * 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes
DE102009056934A1 (de) 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes
FR2973398B1 (fr) * 2011-03-30 2013-04-12 Oberthur Technologies Element de securite pour un document-valeur, un procede de fabrication, et document correspondant
DE102011108242A1 (de) 2011-07-21 2013-01-24 Giesecke & Devrient Gmbh Optisch variables Element, insbesondere Sicherheitselement
EP2594149A1 (de) * 2011-11-18 2013-05-22 Fabrica Nacional De Moneda Y Timbre - Real Casa De La Moneda Objekt mit einem Oberflächenbereich zur Anzeige einer Vielzahl von Bildern
EP2746049A1 (de) 2012-12-20 2014-06-25 KBA-NotaSys SA Tiefdruck-Steuerungsverfahren und entsprechende Farbkontrollfelder
DE102013000556A1 (de) * 2013-01-14 2014-07-17 Giesecke & Devrient Gmbh Reliefierter kartenförmiger Datenträger
WO2014124718A1 (en) * 2013-02-14 2014-08-21 Sicpa Holding Sa Method for printing multi-characteristic intaglio features
AT519582B1 (de) * 2017-01-30 2019-12-15 Oesterreichische Banknoten Und Sicherheitsdruck Gmbh Verfahren zum gravieren einer intaglio-stichtiefdruckplatte
CN108909151A (zh) * 2018-09-13 2018-11-30 南京林业大学 一种凹版印刷苯环网形结构
DE102020205495B4 (de) * 2020-04-30 2023-03-09 STOMA Gesellschaft mit beschränkter Haftung Maschinen und Geräte für die graphische Industrie. Druckform, insbesondere Reliefdruckplatte, sowie Verfahren zur Herstellung derselbigen

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US3887742A (en) * 1972-04-13 1975-06-03 Richard E Reinnagel Copy resistant documents
CH595664A5 (de) * 1975-11-17 1978-02-15 Landis & Gyr Ag
DE59005737D1 (de) * 1989-12-01 1994-06-23 Landis & Gyr Business Support Anordnung zur Verbesserung der Fälschungssicherheit eines Wertdokumentes.
DE19845552A1 (de) * 1998-10-02 2000-04-06 Giesecke & Devrient Gmbh Datenträger
DE10044711A1 (de) * 2000-09-08 2002-03-21 Giesecke & Devrient Gmbh Wertdokument

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DE602005007011D1 (de) 2008-07-03
ATE396058T1 (de) 2008-06-15
WO2005090090A1 (en) 2005-09-29
EP1748900A1 (de) 2007-02-07

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