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Method and device for processing gravure printing cylinders

A processing method and processing device technology, applied in the preparation of the printing surface, printing, printing plate preparation, etc., can solve the problems that cannot be completely guaranteed to only remove melting scars, change printing patterns, etc.

Active Publication Date: 2011-02-16
海尔雕刻系统有限责任两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no guarantee that only the scar will be removed when using this method
In unfavorable cases, the aggressive liquid can also act on the surrounding surfaces inside and outside the pockets, which can likewise lead to undesired changes in the printed pattern

Method used

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  • Method and device for processing gravure printing cylinders
  • Method and device for processing gravure printing cylinders
  • Method and device for processing gravure printing cylinders

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Experimental program
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Embodiment Construction

[0030]The device 2 for the electrochemical treatment of the engraving gravure cylinder 4 shown in the accompanying drawings is used to electrochemically smooth the metal coating surface on the gravure cylinder 4 such as peeling off copper skin, wherein especially the burrs and melting scars beyond the surface Or other microscopic uneven structures are etched away, and burrs, melting scars or other microscopic uneven structures appear along the edges of the grooves on the surface during the existing electromechanical engraving or laser direct engraving of the grooves in the film layer.

[0031] The device 2 is basically composed of an upper basin 6 and a lower basin 8 arranged below the upper basin 6 and used to accommodate the flowing electrolyte 10, and one connected with the upper basin 6 and the lower basin 8 and used to flow the electrolyte 10 from the bottom Basin 8 is fed into a transfer pump 12 of electrolyte tank 14 formed in upper basin 6 and engraved gravure cylinder ...

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PUM

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Abstract

The invention relates to a method and a device (2) for processing gravure printing cylinders (4), which have a metal surface, wells, which are engraved into the metal surface, and burrs or ejected material, which arise during engraving of the wells. To remove the burrs or ejected material, the gravure printing cylinder (4) having the engraved wells is immersed in an electrolyte bath (14), in which the burrs or ejected material are electrochemically ablated.

Description

technical field [0001] The invention relates to a method and a device for processing a gravure cylinder according to the preambles of claims 1 and 10 . Background technique [0002] A known method for producing gravure cylinders by direct engraving consists in that the steel plate cylinder has a metal coating, usually in the form of a copper base layer with a stripped copper skin on it, followed by a metal After the surface of the coating has been polished, the cavities for holding the printing ink during printing are engraved directly into the metal coating with the aid of an engraving machine. [0003] In the case of the metal coating consisting of copper, the engraving of the recesses can be carried out electromechanically by means of a chipping diamond engraving knife protruding into the copper coating or energy-dependently by means of a laser beam which evaporates or melts the coating metal. In electromechanical engraving, the formation of tiny protruding burrs of a fe...

Claims

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Application Information

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IPC IPC(8): B41N3/00B41C1/045B41C1/18B41C1/05
CPCB41C1/05B41C1/045B41N3/003B41C1/18
Inventor M·W·乌尔里希
Owner 海尔雕刻系统有限责任两合公司