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Method and equipment for producing a printing block

A printing plate and equipment technology, applied in the field of generating printing plates, can solve problems such as affecting printing images

Inactive Publication Date: 2005-08-03
SCHABLONENTECHNIK KUFSTEIN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the depth of the raster dots surrounding this fully printed area is not reduced beforehand, the latter will press the subsequent printed area very heavily and warp, which will likewise adversely affect the printed image

Method used

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  • Method and equipment for producing a printing block
  • Method and equipment for producing a printing block
  • Method and equipment for producing a printing block

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Embodiment Construction

[0050] The following combination figure 1 The principle of operation in the present invention is explained in more detail. exist figure 1 , reference numeral 1 designates a printing plate blank produced from polymeric material. For example to produce an offset printing plate, a relief is etched on the surface 2 of the printing plate blank 1 by burning off areas of polymeric material on the printing plate blank 1 by means of eg three focused laser beams 3 , 4 and 5 . More or less than three laser beams may be used. For this purpose, the laser beams 3 , 4 and 5 are continuously moved along a trajectory running on the surface 2 in the direction of the arrow 6 . The laser beam 3 is the main laser beam and first of all acts on the surface 2 of the printing plate blank 1 . It is followed by the laser beam 4 following a time delay along the same track, which is likewise followed by the laser beam 5 following a time delay along the same track. Depending on the depth of a recess t...

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Abstract

Method and device for producing a printing block In a printing block a relief is introduced into the surface of a printing block blank (1) in that material of the printing block blank (1) is removed in regions along tracks by radiation in order by this means to form recesses (V) between which plateaus come to lie. According to the invention the surface of the printing block blank (1) located between the recesses (V) is also removed by radiation in order by this means to obtain lower-lying plateaus (P2).

Description

technical field [0001] The invention relates to a method and a device for producing printing plates. The printing plate may be, for example, a flexographic or flexographic printing plate capable of functioning as a relief offset or gravure printing plate. Background technique [0002] In order to take advantage of the traditional CO 2 Lasers generate flexographic printing plates and it is generally known to burn off the material directly from a printing plate, which may be, for example, a polymer printing plate, in order to generate a relief in the printing plate in this way. During this process, CO 2 The laser is permanently power modulated in order to obtain in this way a recess surrounding the relief on the surface of the printing plate. [0003] Furthermore, in order to produce flexographic printing plates, PCT / EP96 / 05277 already discloses the sequential use of two laser beam sources, the fine structure in the desired profile being obtained with the first laser beam s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41B19/00B41C1/05G03F7/00
CPCB41B19/00B41C1/05
Inventor 约瑟夫·约芬格卡尔·塔勒尔
Owner SCHABLONENTECHNIK KUFSTEIN GMBH