EP1322472B1 - Support de donnees en heliogravure et procedes de transposition de motifs d'images dans des structures lineaires ainsi que dans une plaque helio - Google Patents

Support de donnees en heliogravure et procedes de transposition de motifs d'images dans des structures lineaires ainsi que dans une plaque helio Download PDF

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Publication number
EP1322472B1
EP1322472B1 EP01983467A EP01983467A EP1322472B1 EP 1322472 B1 EP1322472 B1 EP 1322472B1 EP 01983467 A EP01983467 A EP 01983467A EP 01983467 A EP01983467 A EP 01983467A EP 1322472 B1 EP1322472 B1 EP 1322472B1
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EP
European Patent Office
Prior art keywords
line
lines
structures
line structures
image
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.)
Revoked
Application number
EP01983467A
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German (de)
English (en)
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EP1322472A1 (fr
Inventor
Peter Franz
Rüdiger Schmidt
Stefan Winkler
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Giesecke and Devrient GmbH
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Giesecke and Devrient GmbH
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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
    • 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
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • 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
    • B42D25/337—Guilloche patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F3/00—Designs characterised by outlines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F5/00—Designs characterised by irregular areas, e.g. mottled patterns

Definitions

  • the invention relates to a data carrier printed using intaglio printing and a method with which any image motifs in a gravure printing plate can be transferred.
  • the ink-transferring areas of the Provide pressure plate with depressions are with Ink filled, the excess ink using a wiping cylinder or squeegee away from the plate surface, leaving only the indentations are filled with ink, and the inked printing plate against a substrate pressed, which usually consists of paper.
  • a substrate pressed which usually consists of paper.
  • intaglio printing the ink-transferring depressions of the printing plate are in contrast, not dot-like as in gravure printing, but usually linear. Intaglio printing is therefore also called line intaglio printing designated.
  • the contact pressure between the pressure plate or pressure cylinder and substrate is very high, causing the substrate material to print is also permanently shaped.
  • the transferred ink is pasty Consistency and remains after transfer to the substrate and can therefore not only with sufficient ink layer thickness after drying form visible structures that can also be grasped with the sense of touch.
  • the stitch drawing can be made on a transparent Film is transferred through which a photoresist layer is exposed, which is on the printing plate.
  • the printing plate surface is exposed and then the ink-receiving depressions produced by etching.
  • the generated In addition to the etching time, depth also depends on the line width, since fine lines with the same etching time lead to a smaller etching depth than wide lines.
  • Generating largely independent etching depths is this method only possible to a very limited extent through repeated etching. there additional areas are created between the individual etching processes Cover layers applied to or removed from the printing plate. The additional Working steps make this procedure very complex.
  • the fineness of the structures that can be produced is limited and that The etching result is not exactly reproducible.
  • a halftone image can be represented by freely chosen grid elements.
  • the entire image area covered with regularly arranged raster elements and the tonal value of an image area is represented by the fact that the raster element corresponding to this image area is shown with a line width that was previously assigned to the respective tone value.
  • Such Raster structures arranged evenly in the entire image area generate a synthetic, especially in portraits, inanimate expression.
  • the object of the present invention is a data carrier propose the print image produced by intaglio printing is more complex and therefore more tamper-proof.
  • a procedure is also intended be proposed with any image motifs in a gravure printing plate can be transferred, and not the restrictions of the prior art.
  • the method should be a enable faster and more flexible implementation of a picture motif as well Changes and corrections to the graphic implementation of the image motif facilitate and enable a more complex design of the printed image.
  • a data carrier according to the present invention has an intaglio printing process printed halftone image, reproduced in stitch manner becomes. That means the contours, contrasts and tonal values of what is to be represented Motifs are reproduced by irregular line structures, their distance, line width, geometry and type in the printed image is specifically varied in order to achieve different visual impressions.
  • the Print image has repetitive printed structural elements, for example Lines or crossing lines on which at least partially one Fine structure is superimposed. Through the integrated in the structural elements Fine structures increase the complexity of the printed image enormously, and thereby its imitability and counterfeitability significantly reduced. It can also through the fine structure the visual impression achieved by the structural elements can also be changed. The one created in stitching technology Image motif own expressiveness and liveliness, through the individual Design and arrangement of the line structures generated remains received however.
  • the fine structures can be cut out, i.e. unprinted areas are formed that are present in the printed structural elements that continuously and continuously or in regular or irregular Intervals can be interrupted. It is also possible to print the To dissolve structural elements by superimposing them with a fine structure, i.e. the area of the structural elements originally covered with color is represented by individual printed characters, represented in positive representation or symbols replaced. Only the outline of the remains the same Structural elements.
  • the fine structures can be any text, alphanumeric characters, logos, symbols, geometric figures or the like form.
  • fine structures are designed accordingly, they can be visual visible or hidden in the printed image, only by means of technical aids legible additional information or authenticity features are used. Forming the fine structures as anti-copying structures is also possible possible.
  • the structural element is formed by intersecting lines, it can in particular the entire intersection area or one parallel to the intersection area area of a line. It is also possible, any sign or symbol in the intersection area to be left out and thus reproduced in negative form.
  • a structural element for example a line through any single positive printed characters or symbols resolved.
  • the signs or symbols can be connected to each other or spaced from each other and are preferred along the geometric center line of the to be resolved Line arranged.
  • the signs or symbols can remain in the same way or of varying sizes. Varies the line to be resolved in its line width, a preferred embodiment is that Line borderless through in size and / or line width according to the Play line width varying characters or symbols.
  • line widths that are greater than or equal to 25 ⁇ m recesses are preferred for the negative display, which have a clear width of 35 ⁇ m or more.
  • Positive and negative representations can also be combined as desired. Both can Representations not only in different places within a print image are used, but also within a structural element in any order and order can be combined. Independently whether for the fine structure a positive or a negative representation characters and / or symbols can be selected within a structure element can be combined as desired, and neighboring structural elements with the same, alternating regularly or completely different Fine structures can be designed. For overlaying with a fine structure are preferably used such line structures that in Print image have a line width of at least 200 microns.
  • the method according to the invention provides an image motif as a digital data record provided, the image data being available as pixel data.
  • the picture motif is displayed visually based on the pixel data and can thus be used as a template for the subsequent graphic implementation of the image motif in the way serve a stitch drawing.
  • individual line structures in an electronic data processing system generated that reproduce the contours and halftones of the image motif.
  • image areas that have a different visual impression different line structures are created.
  • the the Digital image data representing line structures are stored in a vector-based Data format saved. If desired, the individual Lines of the line structures or the corresponding image data in the processed electronic data processing system.
  • the possibly Edited digital image data are kept while maintaining the vector-based Data format saved. Based on this digital image data then controlled a precision engraving device in such a way that in the surface of an intaglio printing plate correspond to the line structures Depressions are generated.
  • a particular advantage of this procedure in the production of intaglio printing plates is that on the intermediate step of making a physical stitch drawing by output of the digital Image data on a printer or imagesetter can be omitted.
  • Conventional engraving or etching processes are against this intermediate result reliant. Because every additional intermediate step is not only Requires time and effort, but also represents a possible source of error, the method according to the invention is not only faster and more economical, but also safer. Because the issue of a stitch drawing and their further use inevitably with the engraving or etching The method according to the invention allows tolerances, due to the direct further processing of the digital image data also a more detailed one and more accurate implementation of the image motif in the intaglio printing plate.
  • the image can be created using the electronic data processing system be scaled, rotated and mirrored without being in a figurative Form present drawing, which always has a fixed size something needs to be changed. It also eliminates the need for a new printout for each change variant of the edited image motif to make or to expose a film.
  • the engraving can be carried out by means of machining processes such as milling, scraping or planing, as well as by means of non-contact Material removal processes, such as laser engraving.
  • Rezisionsfräsvon are preferred.
  • the engraved plate can be used immediately Printing plate can be used or as an original for common impression and Duplication processes are used by those used in intaglio printing Printing plates are only created.
  • an image motif must first be electronic recorded and digitized. This will depend on the motif to be displayed first an image is made, which is broken down into individual pixels, which are commonly referred to as "pixels". In addition to the coordinates A gray or color value is also recorded for each pixel. The selection of the There are no restrictions on the motif to be displayed.
  • As template can real objects, such as sculptures, buildings or Landscapes serve as well as halftone images, such as photographs or Painting.
  • a scanner can preferably be used, which of course is an appropriate one Must have resolution.
  • To digitize the image of a real object is preferably a video camera or digital camera used.
  • the "pixel data" designated digital image data stored.
  • the visual data is carried out on the basis of the pixel data, preferably on a monitor Representation of the digital image data. If desired or necessary, will be the pixel data electronically retouched, including their processing an electronic data processing system is understood. When retouching annoying details can be removed, contours reinforced or weakened or the contrasts of the image, possibly only for individual image areas can be changed.
  • Analogous to the procedure for the manual creation of a stitch drawing are carried out in an electronic data processing system Operator's specifications generated irregular line structures that the Render contours and halftones of the image to be displayed.
  • the one made on the basis of the pixel data advantageously serves visual representation of the motif as a template.
  • the implementation of the picture motif in line structures is particularly facilitated if the digitized and image motif reproduced by the pixel data on a monitor in the Background is shown while the operator is in the foreground desired line structures generated.
  • the course of the generated lines can be specified manually by the operator, the one level lying coordinates of the line course are recorded by an input medium and transmitted to the data processing system. purpose are especially a drawing board or a computer mouse, also a So-called trackball or a joystick can be used as the input medium.
  • the digital image data which represent the line structures, are in saved in a vector-based data format.
  • a data format based on vector representation takes up less storage space than for a pixel-based data format appropriate resolution. Due to the smaller amount of data subsequent processing steps can be carried out more quickly.
  • the engraving device is controlled in such a way that accordingly the course and geometry of the digital image data represented line structures in the surface of an intaglio printing plate Indentations are created, which are intended for receiving ink are.
  • Engraving depth in the printing plate is independent of the line width Specify value.
  • This value can basically be for all or part of the lines to be engraved can be constant, but it can also be program-controlled dependent on a given mathematical relationship can be calculated from the respective line width. It is also possible that the operator only for a single line, a section of a line or a group of lines specifies any engraving depth, as long as it is is within the technological possibilities. Especially at Lines of narrow line width are of course subject to the feasible engraving depth manufacturing restrictions.
  • the methods according to the invention allow simple processing printing motifs, in particular a processing of the invention Structural elements.
  • the line width and the geometry the line ends of individual lines can be specifically changed.
  • the line ends can for example be rectangular, semicircular or tapered Preserve geometry. It is also possible to stretch the lines, too compress, distort or change their basic geometry. Received in the process the opposite boundary edges of a line, for example no parallel course, but an opposite curvature, so that the line or a line segment has a lenticular or lance-shaped basic geometry receives. All processing steps can be carried out on a single Line or at the same time on a whole group of lines through which a complete image area is reproduced.
  • the intaglio printing process is preferably used for security and security printing, for example for the production of banknotes, shares, passports, ID, high-quality tickets and similar documents used.
  • the method according to the invention for the design of intaglio printing plates enables the implementation of those described above Structural elements with such precision and delicacy that they appear in the printed image thus created data carrier as visually visible or only with the help security features that can be checked with a magnifying glass are used can.
  • the method explained using the production of intaglio printing plates to create an image motif that is characterized by irregular line structures reproduced is basically also suitable for making templates or to produce printing forms for other printing processes. Because implementations of a picture motif in an engraving manner So far not in the manner described, and their line structures are now overlaid with additional fine structures for the first time,
  • the method according to the invention can also be used in an advantageous manner the digital image data generated with it, for example in a digital printer, film setter, platesetter or other digital To further process printing processes.
  • the options explained above and advantages such as liveliness, individuality and complexity the method of representation can be achieved by the method according to the invention also for other printing processes, e.g. use offset printing.
  • Fig. 1 the portrait of a person is reproduced in the manner of a stitch. That is, everyone Contours and picture elements are, as is usual with stitch depiction, with Reproduced with the help of varying line structures. These can come from solid or broken lines exist, such as in Image area of the coat and beard, or also from dashed or dotted Lines as can be seen in the area of the ear, cheek and forehead is. According to the methods known from the prior art such images are manually cut directly into a metal plate or drawn by hand on paper. When implementing a picture motif Different shades and color or Gray values reproduced in that for the differently toned Image areas used different types of line structures and / or the line width and line spacing can be varied.
  • the representation of the on the Image based on pixel data takes place in the background while in the foreground the line structures are generated by the operator's specifications, which reflect the individual elements and details of the portrait.
  • the operator runs a line on a drawing board, for example predefined, which captures the coordinates of the course and on transmitted a data processing system.
  • the line can be in the desired Design can be displayed instantly on the monitor and serves the operator for immediate control of his actions.
  • the process of creating lines based on the specifications of the operator in connection with the simultaneous Representation of the generated line on the monitor thus largely corresponds a free manual drawing, however, has the advantage that each is electronic generated line structure can be edited later can. So it is e.g.
  • an already generated line subsequently extend or shorten the line width of the entire To change the line or individual areas, to distort a line or the To change the geometry of the line ends.
  • a line or the To change the geometry of the line ends For example, end in FIG. 1 most of the lines representing the right side of the mantle in one rectangular profile, while most of the beard and head hair reproducing lines have pointed ends.
  • Semi-circular Line ends are just as conceivable as other asymmetrical or user-generated ones Geometries.
  • the changes and edits can both carried out on a single line or simultaneously on entire line groups that together represent an image area.
  • Fig. 2 shows a portrait section in a representation according to the State of the art with continuous and interrupted, as well as partially crossing line structures.
  • the individual lines have no additional ones Sub or fine structures.
  • the line structures which represent the right shoulder area 1 a fine structure is superimposed.
  • the Fine structure as a recess in the printed, through the horizontal lines educated environment.
  • the recesses form in a negative representation rendered lines that are exactly on the center line of the printed environment forming printed lines.
  • the fine lines of the diagonal running secondary layer are carried out continuously, so that the recesses, i.e. the negative lines at the intersections of the lines of the main and Secondary location can be interrupted.
  • the fine lines are diagonally running secondary layer through the recesses in the horizontal Main location interrupted.
  • the recesses in the Main location of continuous negative lines.
  • the recesses in the horizontal running lines of the main position of the shoulder area 1 a very fine double line in negative representation, which in turn is exactly parallel to the geometric center line.
  • the lines of the diagonal Secondary locations are again not continuous, but are in the intersection area with the lines of the main layer also through the recesses interrupted.
  • Fig. 6a the fine structure is shown in the lines of the shoulder area 1 Cutouts with a simple but different geometric contour in Formed by circles and short dashes.
  • the cutouts in one Each line has the same shape of a simple geometric figure " while successive lines each have different figures as Have recesses.
  • the fine structure is shown by cutouts in the printed Lines formed, in this embodiment one of the letters "G” and "D” composite logo reproduced in a negative representation is.
  • the logo is along the lines overlaid with the fine structure repeated many times at regular intervals.
  • Fig. 8a is in the horizontal lines of the right shoulder area 1 introduced a fine structure that shows the same logo as in Fig. 7.
  • a positive representation was chosen for the logo, i.e., the logo is due to printed structures in front of an unprinted environment played.
  • the line overlaid with the fine structure is thereby largely resolved and only a narrow edge contour remains.
  • the logo is again positioned exactly on the geometric center line and repeated many times along the center line.
  • Representation is also possible with the fine structure completely dissolve the superimposed line, and the contour of its edges by representing characters or symbols in their size and where appropriate also in line width according to the width of the to be resolved Line vary. An example of this is shown in Fig. 8b).
  • the section shows an enlarged view part of a face portrait, the left eye area and Main hair.
  • One of the lines that represents hair or a tuft of hair is not all-over, but with a fine structure.
  • the Fine structure consists of capital letters in positive representation, which together form the term "Gutenberg". The arrangement and size or height the letter follows the course and the outer contour of the original Line that represents a strand of hair. In addition, before and after Group of letters very fine, transverse to the direction of the hair strand arranged negative lines introduced, the hairline into shorter individual segments divide.
  • the data carriers according to the invention are in no way based on those in the Limited fine structures shown embodiments. In the sense of the Any variations and combinations of the invention are different Types and types of fine structures possible.
  • FIG. 9 are schematic and in an enlarged view as structural elements different variants of crossing lines are shown.
  • 9a) corresponds to the prior art, in which both lines cover the entire surface are printed.
  • Fig. 9b) and 9c) the crossing area is different Designed wisely.
  • the fine structure is that in the intersection area only one solid line is played while the second is interrupted in the intersection area and interrupted in this Area is not printed. The two parts of the interrupted Line are spaced so far apart that they are the first continuous Do not touch the line.
  • crossing lines interrupted in the intersection area and exactly the area, that would be covered by both lines is left out.
  • one of the two crossing lines do not cover the entire width of the line reproduced, but only along their two bounding the line Edges, and an area running along the geometric center line spared.
  • the recessed Middle area no constant width over the entire length of the line, but tapers to a point at the line ends.
  • a line is feathered in a partial section becomes.
  • This section is not reproduced over the entire area, but broken down into individual finer sub-lines, which are different Geometry of the ends of the partial lines can have.
  • the ends of the partial lines are rectangular and pointed tapering geometries.
  • the total width of the sub-lines and the between the gaps between them are the line width of the original, not feathered line.
  • FIGS. 9b) to 9f) are different types of fine structures, individually or in different combinations integrated in the intaglio printing image of the data carrier according to the invention can be.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Methods (AREA)
  • Materials For Photolithography (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Processing Or Creating Images (AREA)
  • Credit Cards Or The Like (AREA)

Claims (36)

  1. Support de données avec une image en demi-teinte imprimée par un procédé d'héliogravure au trait ou de taille douce, qui est représentée par des traits, c'est-à-dire par des structures linéaires irrégulières, et qui présente des éléments structuraux imprimés se répétant, caractérisé en ce que des structures fines chevauchent au moins partiellement les éléments structuraux, lesdites structures fines existant sous forme de blancs dans les éléments structuraux.
  2. Support de données selon la revendication 1, caractérisé en ce que les éléments structuraux sont des lignes.
  3. Support de données selon la revendication 2, caractérisé en ce que les structures fines sont formées par des zones continues ou discontinues qui s'étendent le long de la ligne médiane des lignes, les bords des lignes restant en grande partie sous forme de contour continu non interrompu.
  4. Support de données selon la revendication 2, caractérisé en ce que les extrémités de lignes sont reproduites pennées par la structure fine ou en ce qu'une ligne est divisée au moins par tronçons, en conservant sa largeur d'origine, en plusieurs lignes partielles espacées les unes des autres et sensiblement parallèles.
  5. Support de données selon la revendication 1, caractérisé en ce que les éléments structuraux sont des lignes se croisant.
  6. Support de données selon la revendication 5, caractérisé en ce que les structures fines sont formées par des zones linéaires non imprimées.
  7. Support de données selon la revendication 5, caractérisé en ce que les lignes se croisant sont laissées en blanc au niveau de l'intersection.
  8. Support de données avec une image en demi-teinte imprimée par un procédé d'héliogravure au trait ou de taille douce, qui est représentée par des traits, c'est-à-dire par des structures linéaires irrégulières, et qui présente des éléments structuraux imprimés se répétant, caractérisé en ce que des structures fines chevauchent au moins partiellement les éléments structuraux, lesdites structures fines dissociant les éléments structuraux en signes ou symboles imprimés positivement.
  9. Support de données selon la revendication 8, caractérisé en ce que les éléments structuraux sont des lignes.
  10. Support de données selon l'une des revendications 1 ou 8, caractérisé en ce que les structures fines sont formées par du texte, des caractères alphanumériques, des logos, des symboles, des figures géométriques ou des combinaisons de ceux-ci.
  11. Support de données selon au moins l'une des revendications précédentes, caractérisé en ce que les structures fines sont reproduites non seulement en contraste négatif, c'est-à-dire sous forme de blancs en environnement imprimé, mais aussi en contraste positif.
  12. Procédé de transposition d'un motif d'images dans une plaque pour héliogravure au trait ou taille douce avec les étapes suivantes :
    a. préparation de premières données d'images numériques qui existent sous forme de données de pixels et représentent un motif d'images,
    b. représentation visuelle du motif d'images au moyen des données de pixels,
    c. génération de structures linéaires irrégulières, les contours et les demi-teintes du motif d'images étant reproduits par zones par différentes structures linéaires au moyen de directives d'un utilisateur,
    d. enregistrement des secondes données d'images numériques reproduisant les structures linéaires en un format de données à base vectorielle,
    e. le cas échéant, traitement des lignes individuelles des structures linéaires et enregistrement des secondes données d'images traitées,
    f. commande d'un dispositif de gravure de précision au moyen des secondes données d'images traitées, de sorte que des creux correspondant aux structures linéaires soient générés dans la surface d'une plaque pour héliogravure au trait.
  13. Procédé selon la revendication 12, caractérisé en ce qu'une structure fine est chevauchée au moins partiellement par les lignes lors du traitement à l'étape e, les lignes étant dissociées en signes ou symboles individuels reproduits en contraste positif grâce à la structure fine.
  14. Procédé selon la revendication 12, caractérisé en ce qu'une structure fine est chevauchée au moins partiellement par les lignes ou par les zones d'intersection des lignes lors du traitement à l'étape e, ladite structure fine étant reproduite en contraste négatif dans les lignes ou dans les zones d'intersection.
  15. Procédé selon l'une des revendications 12 à 14, caractérisé en ce que lors de la commande de la machine à graver à l'étape f, une profondeur de gravure correspondante est calculée de manière commandée par programme à partir d'une largeur de lignes donnée.
  16. Procédé selon l'une des revendications 12 à 15, caractérisé en ce qu'une profondeur de gravure définie est spécifiée par l'utilisateur pour une ligne individuelle ou pour un groupe de lignes.
  17. Procédé selon l'une des revendications 14 à 16, caractérisé en ce qu'au moins une ligne n'est pas reproduite de manière holoédrique sur toute la surface, mais avec une ligne médiane laissée en blanc non gravée.
  18. Procédé selon l'une des revendications 14 à 17, caractérisé en ce que des lignes se croisant ne sont pas gravées dans la zone de croisement.
  19. Procédé selon l'une des revendications 14 à 17, caractérisé en ce que de deux lignes se croisant, une est complètement gravée dans la zone de croisement et est continue, tandis que l'autre n'est pas gravée dans la zone de croisement et est ainsi discontinue de sorte à ce que les deux lignes se croisant ne se touchent pas.
  20. Procédé selon l'une des revendications 12 à 19, caractérisé en ce qu'une ligne est reproduite pennée au moins par tronçons.
  21. Plaque pour héliogravure au trait, caractérisée en ce qu'elle a été fabriquée selon un procédé selon l'une des revendications 12 à 20.
  22. Procédé de génération d'un motif d'images avec des structures linéaires irrégulières, comportant les étapes suivantes :
    a. préparation de premières données d'images numériques qui existent sous forme de données de pixels et représentent un motif d'images,
    b. représentation visuelle du motif d'images au moyen des données de pixels,
    c. génération de structures linéaires irrégulières, les contours et les demi-teintes du motif d'images étant reproduits par zones par différentes structures linéaires au moyen de directives d'un utilisateur,
    d. enregistrement des secondes données d'images numériques reproduisant les structures linéaires en un format de données à base vectorielle,
    e. le cas échéant, traitement des lignes individuelles des structures linéaires,
    f. chevauchement au moins partiel des structures linéaires avec une structure fine de manière qu'au moins une ligne ou des lignes se croisant comprenne des contours reproduits en contraste négatif et enregistrement des secondes données d'images traitées.
  23. Procédé de génération d'un motif d'images avec des structures linéaires irrégulières, comportant avec les étapes suivantes :
    a. préparation de premières données d'images numériques qui existent sous forme de données de pixels et représentent un motif d'images,
    b. représentation visuelle du motif d'images au moyen des données de pixels,
    c. génération de structures linéaires irrégulières, les contours et les demi-teintes du motif d'images étant reproduits par zones par différentes structures linéaires au moyen de directives d'un utilisateur,
    d. enregistrement des secondes données d'images numériques reproduisant les structures linéaires en un format de données à base vectorielle,
    e. le cas échéant, traitement des lignes individuelles des structures linéaires,
    f. chevauchement au moins partiel des structures linéaires avec une structure fine, de manière qu'au moins une ligne soit dissociée en signes ou symboles reproduits en contraste positif et enregistrement des secondes données d'images traitées.
  24. Procédé selon l'une des revendications 13, 14, 22 ou 23, caractérisé en ce que la structure fine forme un texte, des caractères alphanumériques, des logos, des symboles ou des figures géométriques.
  25. Procédé selon l'une des revendications 12, 22 ou 23, caractérisé en ce qu'un motif d'images est numérisé en vue de la préparation des données de pixels à l'étape a, le motif d'images étant dissocié en points d'images individuels de type pixels et les coordonnées, ainsi que la valeur de gris ou la valeur chromatique étant définies et enregistrées pour chaque point d'images.
  26. Procédé selon la revendication 25, caractérisé en ce que la numérisation est effectuée à l'aide d'un scanner, d'une caméra vidéo ou d'une caméra numérique.
  27. Procédé selon l'une des revendications de procédé précédentes, caractérisé en ce que les données de pixels sont retouchées électroniquement.
  28. Procédé selon l'une des revendications de procédé précédentes, caractérisé en ce que lors de la retouche des données de pixels, les contrastes du motif d'images numérisé sont modifiés au moins par zones.
  29. Procédé selon l'une des revendications de procédé précédentes, caractérisé en ce que la représentation visuelle du motif d'images à l'étape b s'effectue sur un moniteur.
  30. Procédé selon l'une des revendications de procédé précédentes, caractérisé en ce que lors de la génération des structures linéaires à l'étape c, le tracé d'une ligne est spécifié manuellement par l'utilisateur à l'aide d'un média d'entrée en vue de l'acquisition de coordonnées bidimensionnelles.
  31. Procédé selon la revendication 30, caractérisé en ce que le média d'entrée est une souris d'ordinateur, une tablette graphique, une boule de commande ou un manche à balai.
  32. Procédé selon l'une des revendications de procédé précédentes, caractérisé en ce que les structures linéaires sont représentées visuellement immédiatement et sans délai durant leur génération et leur traitement aux étapes c et e.
  33. Procédé selon l'une des revendications de procédé précédentes, caractérisé en ce que le motif d'images reproduit par les données de pixels est chevauché en arrière-plan par la représentation visuelle des structures linéaires.
  34. Procédé selon l'une des revendications de procédé précédentes, caractérisé en ce que lors du traitement des lignes à l'étape e, leur épaisseur de ligne est variée ou la géométrie des extrémités de lignes est modifiée.
  35. Procédé selon la revendication 34, caractérisé en ce que les lignes disposent d'extrémités semi-circulaires, rectangulaires ou se terminant par une pointe.
  36. Procédé selon l'une des revendications de procédé précédentes, caractérisé en ce que les lignes sont étirées, écrasées ou déformées lors du traitement à l'étape e.
EP01983467A 2000-09-08 2001-09-06 Support de donnees en heliogravure et procedes de transposition de motifs d'images dans des structures lineaires ainsi que dans une plaque helio Revoked EP1322472B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10044403 2000-09-08
DE10044403A DE10044403A1 (de) 2000-09-08 2000-09-08 Datenträger mit Stichtiefdruckbild und Verfahren zur Umsetzung von Bildmotiven in Linienstrukturen sowie in eine Stichtiefdruckplatte
PCT/EP2001/010286 WO2002020268A1 (fr) 2000-09-08 2001-09-06 Support de donnees en heliogravure et procedes de transposition de motifs d'images dans des structures lineaires ainsi que dans une plaque helio

Publications (2)

Publication Number Publication Date
EP1322472A1 EP1322472A1 (fr) 2003-07-02
EP1322472B1 true EP1322472B1 (fr) 2004-12-01

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EP01983467A Revoked EP1322472B1 (fr) 2000-09-08 2001-09-06 Support de donnees en heliogravure et procedes de transposition de motifs d'images dans des structures lineaires ainsi que dans une plaque helio

Country Status (16)

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US (2) US6964227B2 (fr)
EP (1) EP1322472B1 (fr)
JP (1) JP2004508225A (fr)
CN (1) CN1226142C (fr)
AT (1) ATE283764T1 (fr)
AU (2) AU2002214967B2 (fr)
BR (1) BR0113768B1 (fr)
CA (1) CA2421089C (fr)
DE (2) DE10044403A1 (fr)
ES (1) ES2228964T3 (fr)
HK (1) HK1059417A1 (fr)
MX (1) MXPA03001763A (fr)
PL (1) PL199806B1 (fr)
RU (1) RU2279982C2 (fr)
WO (1) WO2002020268A1 (fr)
ZA (1) ZA200301516B (fr)

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US7275484B2 (en) 2007-10-02
PL199806B1 (pl) 2008-11-28
DE10044403A1 (de) 2002-03-21
CA2421089A1 (fr) 2003-03-04
BR0113768B1 (pt) 2012-10-30
CN1452549A (zh) 2003-10-29
US6964227B2 (en) 2005-11-15
ES2228964T3 (es) 2005-04-16
RU2279982C2 (ru) 2006-07-20
WO2002020268A1 (fr) 2002-03-14
PL359669A1 (en) 2004-09-06
US20040007145A1 (en) 2004-01-15
EP1322472A1 (fr) 2003-07-02
CA2421089C (fr) 2010-05-18
ZA200301516B (en) 2004-02-26
HK1059417A1 (en) 2004-07-02
AU2002214967B2 (en) 2006-01-19
MXPA03001763A (es) 2003-09-10
CN1226142C (zh) 2005-11-09
US20050139100A1 (en) 2005-06-30
BR0113768A (pt) 2003-06-24
DE50104711D1 (de) 2005-01-05
JP2004508225A (ja) 2004-03-18
AU1496702A (en) 2002-03-22
ATE283764T1 (de) 2004-12-15

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