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Gravure printing plate and valuable document produced by same

A printing plate and gravure technology, applied in the field of data carriers, can solve the problems of large ink consumption, high production cost, ink waste disposal, etc., and achieve the effect of ink saving

Inactive Publication Date: 2006-03-08
GIESECKE & DEVRIENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thick ink marks at the same time also mean a large ink consumption, which thus leads to high production costs
Furthermore, in conventional techniques, the amount of ink applied to the printing plate must be increased to seal off with ink all engraved areas that will form the tactile structure in the printed image
Then, there is more excess ink that must be removed from the surface of the printing plate with a release blade or wiper roller, which leads to disposal problems of the wiped ink

Method used

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  • Gravure printing plate and valuable document produced by same
  • Gravure printing plate and valuable document produced by same
  • Gravure printing plate and valuable document produced by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] figure 1 A detail of a printing plate 1 is shown in cross section, the surface 2 of which has indentations 3 of width a for receiving ink. The groove width a can be up to about 3 mm or more. The line with engraving is formed by two edge areas 4 and 5 and an inner area 6 which is directly adjacent to the inner area. The inner area is additionally provided with a bottom rough pattern as ink well 7 . The edge area 5 is wedge-shaped and the edge area 4 is trapezoidal. In the wedge-shaped variant, the width d of the bottom surface is equal to 0 micrometers, or approximately 0 micrometers due to the degree of solidity of the stylus, and can be up to 10 micrometers. In trapezoidal or other rectangular structures, d is in the range of 10 microns to 500 microns. If you are using a cone with a rounded tip as your engraving knife, you should consider carving corners and edges in a rounded manner. The resulting geometry of the edge region is then, for example, a wedge with a r...

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PUM

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Abstract

The invention relates to a gravure printing plate for producing a printed image, comprising at least one engraved area in the printing plate surface. Said printing plate is characterised in that the engraved area comprises at least one structural element, the edge area thereof having a larger engraving depth than the inner area, the edge area and the inner area are directly adjacent to each other, and the inner area is embodied as a sunken plateau in relation to the printing plate surface. The invention also relates to a method for producing said printing plates, a data carrier comprising a printed image produced by means of the gravure printing process, and a method for gravure printing.

Description

technical field [0001] The invention relates to a data carrier with a printed image formed by intaglio printing, to an intaglio printing method, as well as to a printing plate for carrying out the intaglio printing method and to a method for producing the printing plate. Background technique [0002] Unusually for gravure printing, the printing zone (ie the ink transfer zone) of the printing plate appears as a depression on the surface of the plate. These depressions are formed by suitable engraving tools or by etching. Before the actual printing operation, ink is applied to the engraving plate, and excess ink is removed from the engraving surface by a stripping doctor blade or wiping roller, so that the ink remains only in the depressions. The substrate (usually paper) on which the ink adheres and forms the printed image is then pressed against the stencil and removed. With clear inks, the thickness of the ink marks determines the hue. The high load pressure causes the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41N1/06B41M1/10B41M3/14B41C1/045
CPCB41M3/14B41M1/10B41N1/06
Inventor 罗杰·亚当齐克
Owner GIESECKE & DEVRIENT GMBH