EP1117537B1 - Procede d'impression en heliogravure permettant d'imprimer des surfaces d'impression adjacentes dont les couches d'encre sont de differentes epaisseurs ainsi qu'un support de donnees, une plaque d'impression et un procede de fabrication d'une plaque d'impression - Google Patents

Procede d'impression en heliogravure permettant d'imprimer des surfaces d'impression adjacentes dont les couches d'encre sont de differentes epaisseurs ainsi qu'un support de donnees, une plaque d'impression et un procede de fabrication d'une plaque d'impression Download PDF

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Publication number
EP1117537B1
EP1117537B1 EP99948896A EP99948896A EP1117537B1 EP 1117537 B1 EP1117537 B1 EP 1117537B1 EP 99948896 A EP99948896 A EP 99948896A EP 99948896 A EP99948896 A EP 99948896A EP 1117537 B1 EP1117537 B1 EP 1117537B1
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EP
European Patent Office
Prior art keywords
printing plate
engraved
area
engraving
areas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99948896A
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German (de)
English (en)
Other versions
EP1117537A1 (fr
EP1117537B2 (fr
Inventor
Karlheinz Mayer
Roger Adamczyk
Eduard Wisjak
Peter Franz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and Devrient GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP1117537A1 publication Critical patent/EP1117537A1/fr
Publication of EP1117537B1 publication Critical patent/EP1117537B1/fr
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Publication of EP1117537B2 publication Critical patent/EP1117537B2/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
    • B41M1/10—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

Definitions

  • the invention relates to a data carrier with intaglio printing Printed image, with different color areas adjacent to each other Ink layer thicknesses, an intaglio printing process for printing together bordering colored areas, as well as printing plates for the implementation the gravure printing process and a process for producing the printing plates.
  • gravure printing In conventional gravure printing, there is a difference between gravure printing and the engraving or line gravure.
  • the printing plates are produced, for example, by means of Electron beam, laser beam or stylus.
  • Characteristic of gravure printing is that different gray or color values of the printed image due to wells regularly arranged in the pressure plate Density, size and / or depth are generated.
  • Line or intaglio printing technology is for printing on data carriers, especially securities, such as banknotes and the like, an important technique.
  • Intaglio printing compared to other common printing techniques, such as for example offset printing, a very thick application of ink on a data carrier to.
  • the comparatively thick one produced by intaglio printing Color layer is easy even for the layperson based on its tactility as simple Authenticity feature recognizable. This authenticity feature is simple Do not imitate the copy, so that the intaglio printing technique Offers protection against simple counterfeiting.
  • Intaglio printing is characterized by the fact that the printing plates are linear Wells are made to create a print image.
  • the mechanically manufactured printing plate for intaglio printing is due of the usually tapered engraving tools with increasing Stitch depth creates a wider line.
  • the ink absorption capacity decreases the engraved line and thus the opacity of the printed one Line with increasing stitch depth.
  • etching intaglio printing plates the non-printing areas of the printing plate are marked with a chemically inert paint covered. Subsequent etching turns into the exposed plate surface creates the engraving, depth and The width of the engraving lines depends in particular on the etching time.
  • a method is known from WO 97/48555 with which intaglio printing plates can be produced in a reproducible, mechanical way.
  • To the lines of a line template are recorded and the area of each Line is determined exactly.
  • an engraving tool for example one rotating stylus or a laser beam, first the outer contour this area is engraved to cleanly frame the area. Subsequently the bordered area of the surface is created using the same or a other engraving tool cleared, so the entire line accordingly the line template is exactly engraved.
  • the object of the present invention is therefore to provide measures which allow contiguous colored areas in intaglio printing to produce that are clearly differentiated.
  • the color layer thickness is at the borderline between the color areas equals zero. It can, however, if the printing colors of each other connecting bordering colored areas in the immediate border area, slightly be greater than zero; this is particularly the case when the edges of the separating edge are steep and have a small flank angle. The flatter the Flanks of the separating edge, the slower the color layer thickness in the Border area against the minimum ink layer thickness. This can cause a very fine, only visible under magnification, for example with a magnifying glass lighter boundary lines are generated between the adjacent colored areas, which as an additional security feature hidden under normal observation can serve.
  • the invention makes it possible for the first time to directly adjoin one another Color areas with different layer thicknesses using intaglio printing to generate that do not run into each other and clearly delimited from each other are.
  • FIG. 1 shows a profile of a printing plate 1 with a printing plate surface 2, into which a first engraving area 3a with an engraving depth t a and a second engraving area 3b with a second engraving depth t b are engraved.
  • the two engraving areas 3a, 3b directly adjoin one another at the level of the printing plate surface 2 and are otherwise separated from one another by a separating edge 5, the upper edge 6 of which tapers at the level of the printing plate surface 2.
  • the printing plate can also be designed so that the upper edge 6 is slightly, ie a few microns below the level of the printing plate surface 2.
  • the flanks of the engraving areas 3a, 3b also simultaneously form the flanks of the separating edge and form a flank angle with respect to the solder on the upper edge 6.
  • flank angle ⁇ of the right flank of the separating edge is shown, since the two flank angles are the same in the example shown.
  • the two flank angles of the separating edge 5 can also be chosen differently.
  • the flank angles can be in the range from 15 ° to 60 °, preferably in the range from 30 ° to 50 °.
  • the base areas 7a and 7b of the engraving areas 3a, 3b can be flat be (7a) or have a basic roughness pattern (7b).
  • the basic roughness pattern is advantageous because the ink is better at the bottom of the Engraving is held.
  • the engraving areas 3a and 3b can also go down taper to a point so that they have no base area 7a or 7b (not ) Shown.
  • the engraving depth ta, tb of the engraving areas 3a, 3b is in the range from 5 ⁇ m to 250 ⁇ m and preferably in the range from 5 ⁇ m to 150 ⁇ m.
  • the engraved plates are also suitable for duplication using conventional, customary impression techniques for intaglio printing plates. Doing so the engraved original reproduced several times via intermediate steps and only the reproductions used as a printing form. Engravings with the preferred Flank angles and engraving depths have changed during the reproduction required molding and separation processes as particularly cheap proved.
  • FIG. 2 shows a section of a data carrier 10 with a printed image comprising two color areas 12a, 12b in a schematically simplified manner.
  • the data carrier 10 was printed with a printing plate 1, as shown in FIG. 1, by intaglio printing. During the printing process, the data carrier 10 is pressed into the engraving areas 3a, 3b, wherein corresponding depressions 11a, 11b can remain permanently on the underside of the data carrier 17.
  • the upper side of the data carrier 15 has corresponding elevations in the areas 11a, 11b, these elevations being covered by color layers 13a, 13b, which were taken from the upper side of the data carrier 15 from the engraving areas 3a, 3b.
  • the surfaces of the color layers 13a, 13b form the color areas 12a and 12b.
  • the difference in level between the non-printed substrate surface and the surfaces of the respective color areas 12a, 12b is defined as the ink layer thickness D a , D b .
  • the ink layer thicknesses D a and D b decrease continuously up to a boundary line which was defined by the upper edge 6 of the separating edge 5 of the printing plate 1.
  • the flank angle ⁇ and depending on the engraving depth ta, tb, there is a more or less wide border area B. Since the ink layer thicknesses D a and D b decrease continuously in the border area B, a suitable choice of the flank angle ⁇ for the human eye to produce a line of light color that is not recognizable without the aid of tools.
  • the ink layer thicknesses D a and D b are reduced at the borderline to an ink layer thickness minimum with a thickness of 0.
  • the ink areas 12a, 12b can also be slightly connected without any detectable color mixing occurring.
  • Figure 3 shows this case. It can be seen that a connection of the colored areas 12a and 12b has taken place at the boundary line 16.
  • the color layers 13a and 13b can consist of printing inks of different colors, since the colors of different engraving areas are practically not mixed due to the inventive design of the printing plate. However, if the same glazing printing ink is used for adjacent engraving areas 3a, 3b with different engraving depths t a and t b , different color tones of the color layers 13a and 13b result in the printed image.
  • the adjacent engraving areas can be linear or area-like depressions.
  • the wells are preferred engraved with a rotating stylus that has a flank angle corresponding to the flank angle of the separating edge to be generated.
  • the engraving stylus can also be moved along paths that form two groups.
  • the curves or straight lines of a share run each parallel to each other and cross the curves or straight lines of the second Coulters at regular intervals. This creates a basic roughness pattern in the manner of a cross grid with particularly favorable color trapping properties.
  • the stylus preferably tapers to a point or has a special one Contour that allows a basic roughness pattern on the base of the engraving to generate, which serves as a color catcher.
  • the prick is in regular, small distances parallel to a previously engraved path moved, so that the previously engraved depression widens by precisely this distance becomes.
  • the engraving depth is in the range from 5 to 250 ⁇ m, preferably 5 to 150 ⁇ m.
  • flank angles in the range from 30 ° to 50 ° allow one longer service life of the engraving tool with excellent Print result of the engraved printing plate.
  • Tools with flank angles in the range of 30 ° are particularly suitable for engraving very fine, filigree and small-area structures, while for engraving large-area and coarser structures Tools with flank angles from 40 ° to 50 ° are preferable.
  • One or more linear or flat depressions can be a pattern, represent a symbol or a character.
  • Several together bordering depressions can form a regular grid, so that the generated print image appears homogeneous, the grid being a fine structure generated in the print image, which can only be recognized with magnifying aids.

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  • Printing Methods (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)

Claims (25)

  1. Support de données (10) avec un élément imprimé produit par héliogravure qui présente au moins une première surface d'impression (12a) avec une première épaisseur de couche d'encre (Da) et au moins une deuxième surface d'impression (12b) adjacente à la première surface d'impression (12a) avec une deuxième épaisseur de couche d'encre (Db), les épaisseurs de couche d'encre (Da, Db) étant différentes, caractérisé en ce que la première et la deuxième surface d'impression (12a, 12b) sont directement adjacentes et séparées par une ligne exacte (16) invisible à l'oeil nu, et que l'épaisseur de la couche d'encre des deux surfaces d'impression (12a, 12b) présente un minium au voisinage de la ligne séparatrice (16).
  2. Support de données selon la revendication 1, caractérisé en ce que le minimum de l'épaisseur d'une couche d'encre est quasiment nul.
  3. Support de données selon la revendication 1 ou 2, caractérisé en ce que les surfaces d'impression sont formées de façon linéaire ou planaire.
  4. Support de données selon les revendications 1 à 3, caractérisé en ce que la première surface d'impression (12a) et / ou la deuxième surface d'impression (12b) représentent un motif, un élément figuratif ou un caractère.
  5. Support de données selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la première et / ou la deuxième surface d'impression (12a, 12b) présente un motif de rugosité du type quadrillage croisé.
  6. Plaque d'impression (1) pour imprimer des surfaces d'impression adjacentes (12a, 12b) comportant une surface de plaque d'impression (2) et au moins une zone de gravure (3a) gravée dans la surface de la plaque d'impression (2) avec une première profondeur (ta) de gravure et au moins une deuxième zone de gravure (3b) adjacente à la première zone de gravure (3a) avec une deuxième profondeur de gravure (tb), les profondeurs de gravure (ta, tb) étant différentes, caractérisée en ce qu'une arête de séparation (5) est disposée entre la première et la deuxième zone de gravure (3a, 3b) dont l'arête supérieure (6) se termine en pointe à la hauteur de la surface de la plaque d'impression (2).
  7. Plaque d'impression selon la revendication 6, caractérisée en ce que l'arête de séparation (5) présente des angles entre les flancs (α) dans une zone de 15° à 60°, de préférence de 30° à 50° par rapport à la perpendiculaire à la surface de la plaque d'impression (2).
  8. Plaque d'impression selon la revendication 6 ou 7, caractérisée en ce que les première et deuxième profondeurs de gravure (ta, tb) se situent dans une zone entre 5 µm à 250 µm.
  9. Plaque d'impression selon la revendication 8, caractérisée en ce que les première et deuxième profondeurs de gravures (ta, tb) se situent dans la zone de 5 µm à 150 µm.
  10. Plaque d'impression selon au moins l'une quelconque des revendications 6 à 9, caractérisée en ce que les zones de gravure sont formées par des enfoncements linéaires ou planaires.
  11. Plaque d'impression selon au moins l'une des revendications 6 à 10, caractérisée en ce que la première zone de gravure (3a) et / ou la deuxième zone de gravure (3b) forment un motif, un élément figuratif ou un caractère.
  12. Plaque d'impression selon au moins l'une des revendications 6 à 11, caractérisée en ce que la première ou la deuxième zone de gravure (3a, 3b) présente une surface de base (7a, 7b) avec un motif de rugosité.
  13. Plaque d'impression selon la revendication 12, caractérisée en ce que le motif de rugosité est du type quadrillage croisé.
  14. Procédé d'impression en héliogravure permettant d'imprimer des surfaces d'impression (12a, 12b) avec des épaisseurs de couche d'encre différentes (Da, Db) en utilisant une plaque d'impression selon l'une quelconque des revendications 6 à 13.
  15. Procédé pour fabriquer une plaque d'impression (1) pour imprimer des surfaces d'impression adjacentes (12a, 12b) avec des épaisseurs de couche d'encre différentes (Da, Db) comprenant les étapes suivantes :
    mise à disposition d'une plaque d'impression (1) avec une surface de plaque d'impression (2) et
    la gravure de la première zone de gravure (3a) avec une première profondeur de gravure (ta) et une deuxième zone de gravure (3b) avec une deuxième profondeur de gravure (tb) dans la surface de la plaque d'impression (2), caractérisé en ce qu'entre la première zone de gravure (3a) et la deuxième zone de gravure (3b), il reste une arête de séparation (5) qui présente une arête supérieure (6) terminant en pointe à la hauteur de la surface de la plaque d'impression (2).
  16. Procédé pour fabriquer une plaque d'impression selon la revendication 15, caractérisé en ce que les zones de gravure sont formées par des enfoncements linéaires ou planaires.
  17. Procédé selon la revendication 15, caractérisé en ce que l'arête de séparation (5) est créée avec des angles entre les flancs (α) dans la zone de 15° à 60°, de préférence entre 30° et 50° par rapport à la perpendiculaire à la surface de la plaque d'impression.
  18. Procédé selon la revendication 17, caractérisé en ce qu'un outil de gravure avec des angles entre les flancs (α) correspondants est utilisé pour la gravure.
  19. Procédé selon la revendication 18, caractérisé en ce qu'un burin à rotation en pointe est utilisé pour la gravure.
  20. Procédé selon au moins l'une quelconque des revendications 15 à 19, caractérisé en ce que les profondeurs de gravure (ta, tb) sont produites dans la zone de 5 µm à 250 µm.
  21. Procédé selon la revendication 20, caractérisé en ce que les profondeurs de gravure (ta, tb) se situent dans la zone de 5 µm à 150 µm.
  22. Procédé selon au moins l'une quelconque des revendications 15 à 21, caractérisé en ce qu'une surface de base (7a, 7b) avec un motif de rugosité est produite dans la première zone de gravure (3a) et / ou la deuxième zone de gravure (3b).
  23. Procédé selon la revendication 22, caractérisé en ce que le motif de rugosité est du type quadrillage croisé.
  24. Procédé selon au moins l'une quelconque des revendications 15 à 22, caractérisé en ce que plusieurs premières zones de gravure adjacentes (3a) et une ou plusieurs deuxièmes zones de gravure (3b) adjacentes sont gravées dans la surface de la plaque d'impression (2).
  25. Procédé selon au moins l'une quelconque des revendications 15 à 24 en ce que la première ou plusieurs premières zones de gravure (3a) et / ou la deuxième ou plusieurs deuxièmes zones de gravure (3b) sont disposées en forme d'un motif, d'un élément figuratif ou d'un caractère.
EP99948896.8A 1998-10-02 1999-09-29 Procede d'impression en heliogravure permettant d'imprimer des surfaces d'impression adjacentes dont les couches d'encre sont de differentes epaisseurs ainsi qu'un support de donnees, une plaque d'impression et un procede de fabrication d'une plaque d'impression Expired - Lifetime EP1117537B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19845436.8A DE19845436C5 (de) 1998-10-02 1998-10-02 Stichtiefdruckverfahren zum Drucken von aneinander grenzenden Farbflächen unterschiedlicher Farbschichtdicke, Datenträger mit im Stichtiefdruckverfahren erzeugtem Druckbild, Druckplatte und Verfahren zum Herstellen einer Druckplatte
DE19845436 1998-10-02
PCT/EP1999/007216 WO2000020216A1 (fr) 1998-10-02 1999-09-29 Procede d'impression en heliogravure permettant d'imprimer des surfaces d'impression adjacentes dont les couches d'encre sont de differentes epaisseurs

Publications (3)

Publication Number Publication Date
EP1117537A1 EP1117537A1 (fr) 2001-07-25
EP1117537B1 true EP1117537B1 (fr) 2003-05-07
EP1117537B2 EP1117537B2 (fr) 2017-12-13

Family

ID=7883205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99948896.8A Expired - Lifetime EP1117537B2 (fr) 1998-10-02 1999-09-29 Procede d'impression en heliogravure permettant d'imprimer des surfaces d'impression adjacentes dont les couches d'encre sont de differentes epaisseurs ainsi qu'un support de donnees, une plaque d'impression et un procede de fabrication d'une plaque d'impression

Country Status (18)

Country Link
US (2) US6928925B1 (fr)
EP (1) EP1117537B2 (fr)
JP (1) JP4550282B2 (fr)
CN (1) CN1155471C (fr)
AR (1) AR020679A1 (fr)
AT (1) ATE239614T1 (fr)
AU (1) AU756205B2 (fr)
CA (1) CA2345748C (fr)
DE (2) DE19845436C5 (fr)
DK (1) DK1117537T3 (fr)
ES (1) ES2194512T3 (fr)
PL (1) PL190828B1 (fr)
PT (1) PT1117537E (fr)
RU (1) RU2236949C2 (fr)
TR (1) TR200100925T2 (fr)
UA (1) UA71583C2 (fr)
WO (1) WO2000020216A1 (fr)
ZA (1) ZA200102252B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007115662A1 (fr) 2006-04-04 2007-10-18 Giesecke & Devrient Gmbh Élément de sécurité

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AR090178A1 (es) 2012-03-23 2014-10-22 Sicpa Holding Sa Metodo de impresion con tinta calcografica de secado por oxidacion y tintas calcograficas curables por uv-vis
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DE102016002454A1 (de) * 2016-03-01 2017-09-07 Klemens Kemmerer Verfahren und Vorrichtung für den Tiefdruck
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CN1155471C (zh) 2004-06-30
RU2236949C2 (ru) 2004-09-27
CA2345748C (fr) 2005-12-27
AR020679A1 (es) 2002-05-22
AU6198099A (en) 2000-04-26
ATE239614T1 (de) 2003-05-15
DK1117537T3 (da) 2003-08-25
ES2194512T3 (es) 2003-11-16
JP4550282B2 (ja) 2010-09-22
DE59905490D1 (de) 2003-06-12
AU756205B2 (en) 2003-01-09
DE19845436B4 (de) 2009-06-10
ZA200102252B (en) 2002-06-04
US6928925B1 (en) 2005-08-16
PL347150A1 (en) 2002-03-25
UA71583C2 (uk) 2004-12-15
JP2002526289A (ja) 2002-08-20
EP1117537A1 (fr) 2001-07-25
PT1117537E (pt) 2003-09-30
US7028615B2 (en) 2006-04-18
DE19845436A1 (de) 2000-04-06
US20050193909A1 (en) 2005-09-08
PL190828B1 (pl) 2006-02-28
WO2000020216A1 (fr) 2000-04-13
CA2345748A1 (fr) 2000-04-13
TR200100925T2 (tr) 2001-08-21
CN1320076A (zh) 2001-10-31
DE19845436C5 (de) 2015-02-26
EP1117537B2 (fr) 2017-12-13

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