Method and equipment for producing a printing block

A printing block and equipment technology, applied in printing, printing plate preparation, optical mechanical equipment, etc., can solve problems such as heavy pressing and affecting printing images

Inactive Publication Date: 2003-01-01
SCHABLONENTECHNIK KUFSTEIN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the depth of the raster dots around this fully printed area is not reduced beforehand, the latter will als

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

[0049] 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 block blank produced from polymeric material. For example to produce an offset printing block, a relief is etched on the surface 2 of the printing block blank 1 by burning off areas of polymeric material on the printing block blank 1 by means of eg three focused laser beams 3 , 4 and 5 . More or less than three laser beams can 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 block 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 a printing block as claimed in claims 1 and 21 . The printing block may be, for example, a flexible or offset printing block capable of functioning as a relief printing or gravure printing block. Background technique [0002] In order to resort to a conventional CO 2 The laser generates an offset printing block, which is generally known to burn the material in sequence directly from a printing plate, which may for example be a polymer printing plate, in this way creating a relief in the printing plate. During this process, CO 2 The laser is permanently and sequentially modulated in power in this way to obtain a notch surrounding the relief on the surface of the printing plate. [0003] Furthermore, in order to generate an offset printing block, PCT / EP96 / 05277 has disclosed the sequential use of two laser beam sources, with the first laser beam source obtaining a fine structure in a desired...

Claims

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Application Information

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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
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