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Method of manufacturing an engraved plate

A laser engraving machine, mastering technology, used in manufacturing tools, printing plates, printing plate preparation, etc., can solve the problem of not providing accurate control of engraving depth

Inactive Publication Date: 2008-02-06
KBA NOTASYS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the mask is just an image consisting of transparent and opaque parts, this method does not use information about variable depths and does not provide precise control over engraving depth

Method used

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  • Method of manufacturing an engraved plate
  • Method of manufacturing an engraved plate
  • Method of manufacturing an engraved plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Figure 1 schematically shows the state of the technical process traditionally used by a security printing factory for the manufacture of gravure printing plates.

[0041] The first step is to hand carve an image with depth, such as a portrait, in a steel or copper mold. This step required months of labor by a skilled sculptor.

[0042] The second step is to create a copy of this hand-engraved mold and add other lines to the mold by chemical etching. These lines may be computer-generated secret patterns that are printed during the gravure process.

[0043] The third step is to form a plastic imprint of the mold. It will be possible to make as many impressions as the security document printed on each page.

[0044] The fourth step is to cut these stamps into shape.

[0045] The fifth step is to place the cut stamps into rows and columns and then weld them together to create a multi-image plastic assembly.

[0046] The sixth step is to silver the multi-image plastic a...

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PUM

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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 depthmap, based on a three-dimensional raster image of the document to be printed.

Description

[0001] The present application is a divisional application with the application number 03801222.7 filed on June 3, 2003, and the title of the invention is "method for manufacturing an engraved plate". technical field [0002] The present invention generally relates to the field of gravure printing for the production of security paper, especially banknotes. [0003] More particularly, the present invention relates to a method of making an engraved plate for gravure printing of security paper, wherein the non-engraved plate is provided to a programmed engraving process by a computer-controlled engraving tool. Background technique [0004] Traditionally, the manufacture of intaglio is a lengthy and complex process that begins with hand-carving a steel or copper plate, creating a copy of this first plate, adding other elements by chemical engraving, making the plastic imprint of this final original, They are soldered together and passed through a significant number of electropla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41C1/04B41C1/10B41N1/12B23K26/00B41C1/05B41M3/14B41N1/06H04N1/40
CPCB41M3/14H04N1/40081B41C1/04B41N1/06B23K2201/04B23K2201/18B23K2101/04B23K2101/18Y10T428/30Y10T428/12229Y10T428/31721
Inventor 法乌斯托·基奥利德克·达乌雅克斯·佩利尔劳伦特·玛蒂斯
Owner KBA NOTASYS SA
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