Abstract: A method of manufacturing an engraved plate used in intaglio printing, said plate being engraved by a tool, for example a laser beam, characterized in that the engraving tool uses data from a depth-map, based on a three-dimensional raster image of the document to be printed.

Abstract: A method of manufacturing an engraved plate used in intaglio printing, said plate being engraved by a tool, for example a laser beam, characterized in that the engraving tool uses data from a depth-map, based on a three-dimensional raster image of the document to be printed.

Abstract: A method of manufacturing an engraved plate used in intaglio printing, said plate being engraved by a tool, for example a laser beam, characterised in that the engraving tool uses data from a depth-map, based on a three-dimensional raster image of the document to be printed.

Abstract: The invention concerns an installation comprising means controlling printing quality supplied by a printed sheet feeding device. Downstream, printing means print serial numbers and/or affix other elements. The quality of the number printing is controlled by a control device. A transfer device transports the sheets to a stock of three stacks one of which collects the defective sheets. A marking device affix a mark on the sheets considered unsuitable during the quality control.

Abstract: The invention concerns an installation comprising means controlling printing quality supplied by a printed sheet feeding device. Downstream, printing means print serial numbers and/or affix other elements. The quality of the number printing is controlled by a control device. A transfer device transports the sheets to a stock of three stacks one of which collects the defective sheets. A marking device affix a mark on the sheets considered unsuitable during the quality control.

Abstract: The invention concerns an installation comprising means controlling printing quality supplied by a printed sheet feeding device (1–3). Downstream, printing means (12–16) print serial numbers and/or affix other elements. The quality of the number printing is controlled by a control device (17). A transfer device (18) transports the sheets to a stock of three stacks (21, 22, 23) one of which collects the defective sheets. A marking device (19) affix a mark on the sheets considered unsuitable during the quality control.

Abstract: The method comprises the following steps: printing of a background on the substrate, semi-transparent printing of a motif with optically variable ink, said motif at least partially covering said background

Abstract: The invention relates to a security element for a data carrier, such as banknotes, securities, checks, credit cards, ID cards and similar documents. A substrate comprises a first layer of material and at least a first opaque layer (3) of material covering partially or totally the first layer of material. The first layer has at least two adjacent zones (1,2) of a different color. The element further comprises a pattern (4) formed by a partial engraving of said opaque layer (3). The pattern (4) extends at least partially on each of said zones (1,2) so that the pattern (4) comprises adjacent parts of different color in perfect register apparent through said opaque layer (3).

Abstract: The invention concerns an installation comprising means controlling printing quality supplied by a printed sheet feeding device (1-3). Downstream, printing means (12-16) print serial numbers and/or affix other elements. The quality of the number printing is controlled by a control device (17). A transfer device (18) transports the sheets to a stock of three stacks (21, 22, 23) one of which collects the defective sheets. A marking device (19) affix a mark on the sheets considered unsuitable during the quality control.

Abstract: Processing unit (8) collects information from reader (7) detecting the guide marks (4) in form of a code bar on the successive sheets (1) led to drum (3) on table (2). It is programmed to send control signals to all the members (51, 52, 53, 61, 62, 63) of two or more marking devices functioning with different printing technologies and to create an authenticating data base. Device (5) functions with a mechanical typography system.

Abstract: A method of manufacturing an engraved plate used in intaglio printing, said plate being engraved by a tool, for example a laser beam, characterised in that the engraving tool uses data from a depth-map, based on a three-dimensional raster image of the document to be printed.

Abstract: The web fed or sheet fed printing machine for security papers, in particular banknotes, possesses a principal printing group. It further has an additional, independent printing group (20) placed upstream of the principal printing group in the feed direction of the paper and allowing a pattern in at least one predetermined color to be printed over the entire width of the paper before the paper passes into the principal printing group.

Abstract: A process for producing a fresh wiping solution, comprising at least 90% of water and additives, and for treating said solution once used by the inks of one or more intaglio printing machines, wherein said process comprises the following steps: (a) production of fresh wiping solution, (b) introduction of the fresh wiping solution in one or several wiping tanks and contamination of the fresh wiping solution by the inks, (c) ultrafiltration of the used solution producing a clear solution and a concentrated residual solution, (d) recycling of the clear solution, (e) flocculation of the concentrated residual solution, (f) filtration of the flocculated solution giving solid waste and a filtered solution, (g) neutralization of the filtered solution, (h) evaporation of the neutralized solution producing a concentrated salty solution and distilled water, (i) use of the distilled water for producing fresh wiping solution and (j) filtration of the concentrated salty solution.

Abstract: The relief printing part (2) of the printing plate, which is intended to be inked over its entire surface, includes at least one etched recessed pattern (4) intended to be filled with the same ink as that serving for the inking of the relief printing part. The relief printing part preferably has a grainy structure composed of evenly distributed screen dots.

Abstract: Machine for security printing on security papers, especially bank notes, comprising a device (1) for feeding with paper, a device for transporting the paper and a unit (19) for applying optically variable images supported by at least one tape which is brought into contact with the paper such that these images are applied at defined locations on the paper corresponding to the printing marks on security papers. The application unit (19) includes at least one applicator cylinder (11) interacting with a pressure cylinder (20), the paper moving along between these cylinders. The tape is mounted between two reels arranged in a sector of the applicator cylinder (11) and the tape passes along a generatrix of said applicator cylinder, perpendicularly to the path of the paper, under the action of a servomotor acting intermittently at each application step.