Photogravure reproduction roll with cushion layer and its manufacturing method

A technology of gravure plate making and manufacturing method, which is applied in the field of strengthening the covering layer on the surface, which can solve the problems of easy peeling, weak adhesion between DLC layer and copper, pollution, etc., and achieve the effect of excellent brush resistance

Inactive Publication Date: 2008-09-24
THINK LABORATORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since highly toxic hexavalent chromium is used in the chromium plating process, extra costs are required to maintain the safety of the work, and there is also a problem of pollution. The emergence of a surface strengthening coating that can replace the chromium layer is currently expected
[0019] On the other hand, in the manufacture of gravure rolls (gravure cylinders), it is known that diamond-like carbon (DLC) is formed on the copper plating layer forming the unit and used as a surface strengthening coating (Patent Documents 1 to 3) , but there is the problem of weak adhesion between the DLC layer and copper and easy peeling

Method used

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  • Photogravure reproduction roll with cushion layer and its manufacturing method
  • Photogravure reproduction roll with cushion layer and its manufacturing method
  • Photogravure reproduction roll with cushion layer and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Using Boomeran Lane (manufacturing equipment for Shinkeku gravure rolls, Ltd.), the formation of the copper plating layer and the etching process described below were performed. First, a buffer layer-attached plate base material in which a silicone rubber layer with a thickness of 5 cm was wound on the surface of an aluminum hollow roll with a circumference of 600 mm and a surface length of 1100 mm was prepared. Install the plate base material in the plating tank, use the automatic sliding device of the computer system, make the anode chamber close to the hollow roller until 20mm, fill the coating liquid, and make the plate base material completely submerge, at 18A / dm 2 , 6.0V to form a copper plating layer of 80μm. The plating time is 20 minutes, no pits or pits occur on the plating surface, and a uniform copper plating layer is obtained. The surface of the copper plating layer was polished for 12 minutes using a 4H grinder (Shingaku grinder Co., Ltd.), so that the su...

Embodiment 2

[0070] It carried out similarly to Example 1, and produced the cylinder whose depth of the gravure cell was 5 micrometers. With respect to the cylinder, the tungsten (W) sample was changed to a silicon (Si) sample, except that it was carried out in the same manner as in Example 1, and a gravure roll with a buffer layer was completed, and the printing test was carried out in the same manner, and the result was also found to be It has the same printing performance without fogging and the like. As a result, it was confirmed that the diamond-like carbon (DLC) film has performance comparable to that of the conventional chromium layer, and is sufficient to be used as a chromium layer substitute. In addition, it was also confirmed that the same experiment was performed using titanium (Ti) and chromium (Cr) as metal samples, and the same result was obtained.

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Abstract

A production method for a printing plate, especially a gravure plate with a cushioning property, which enables direct gravure printing on a hard printing matter without using a blanket roll by being provided with a cushioning property, effects a satisfactory gravure printing on a rough surface such as cardboard printing, and is suitable for color-printing a matrix image for forming a color filter on a liquid crystal panel-use glass sheet or an image on a compact disk or the like. The gravure plate comprises a hollow roll provided on the surface thereof with a cushioning layer consisting of rubber or cushioning resin, a copper plated layer provided on the surface of the cushioning layer and formed on the surface thereof with many gravure cells, a metal layer provided on the surface of the copper plated layer, a metal carbide layer provided on the surface of the metal layer, and a diamond-like carbon coating for coating the surface of the metal carbide layer.

Description

technical field [0001] The present invention relates to a gravure plate-making roll with a buffer layer suitable for printing on rough surfaces such as corrugated paper or printing images on micro-discs, or color printing matrix images for constituting color filters on glass for liquid crystal panels The invention relates to a gravure plate-making roll with a buffer layer provided with a diamond-like carbon (DLC) film layer as a surface strengthening coating layer and a manufacturing method thereof. Background technique [0002] In the past, concave offset printing or waterless offset printing was used in color printing of matrix images for constituting color filters on printing plates, especially glass for liquid crystal panels, or in color printing images on micro-discs. plate printing. The reason is that in gravure printing, since there is no cushioning, the printing pressure increases, and there is a possibility that the glass will be broken, or the deformation of the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N1/22B41C1/02B41N1/12G02B5/20G03F7/00G03F7/09
CPCB41N1/22G03F7/0007B41C1/045B41C1/02B41N1/12G02B5/20G03F7/09
Inventor 重田龙男佐藤勉杉山浩一浅野贵之
Owner THINK LABORATORY CO LTD
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