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Photosensitive laminated original printing plate for letterpress printing and process for producing letterpress printing plate using the photosensitive laminated original printing plate

A technology of letterpress printing and original printing plate, which is applied in the field of manufacturing of photosensitive laminated printing original plate for developed letterpress printing and developed letterpress printing plate using the original printing plate, which can solve the problem of contamination of developing solution, etc., and achieve pollution prevention and high quality , the effect of suppressing cost increases

Inactive Publication Date: 2010-12-22
EASTMAN KODAK CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] Therefore, it is required to solve the above-mentioned problem that the substance contained in the infrared sensitive material layer transfers to the developing solution for developing the infrared sensitive material layer and contaminates the developing solution.

Method used

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  • Photosensitive laminated original printing plate for letterpress printing and process for producing letterpress printing plate using the photosensitive laminated original printing plate
  • Photosensitive laminated original printing plate for letterpress printing and process for producing letterpress printing plate using the photosensitive laminated original printing plate
  • Photosensitive laminated original printing plate for letterpress printing and process for producing letterpress printing plate using the photosensitive laminated original printing plate

Examples

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Effect test

Embodiment 1

[0096] Polyvinyl alcohol (hereinafter referred to as "PVA") used as a binder (trade name: PVA405, manufactured by Kuraray Co., Ltd.) was dissolved in pure water / isopropyl alcohol (hereinafter referred to as "IPA") (2:1) , a 10% by mass uniform binder solution was obtained. 1.0 g of phthalocyanine-based infrared-absorbing dye (trade name: S0306, manufactured by Siber Hegner Co., Ltd., Japan) was added to 50 g of the adhesive solution, and stirred to make it uniform. 1.5 g of an ultraviolet absorbing azo dye (trade name: Sumilight Supra Yellow, manufactured by Sumitomo Chemical Co., Ltd.) was added to this mixed solution to prepare a uniform mask material solution.

[0097] Next, the above-mentioned mask material solution was coated on a PET film (protective layer (D)) with a thickness of 100 μm, and dried to a thickness of 5 μm, and dried at 100° C. for 5 minutes to form a mask material layer. (C). The optical density of the mask material layer (C) at 370 nm (ultraviolet rays...

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Abstract

A photosensitive laminated original printing plate for letterpress printing that does not contaminate developers, being capable of suppressing a cost increase due to developer replacement and is of high quality; and a process for producing a letterpress printing plate using the photosensitive laminated original printing plate for letterpress printing. There is provided a photosensitive laminated original printing plate for letterpress printing, comprising a support and, at least sequentially superimposed thereon, a photosensitive resin layer which is sensitive to ultraviolet radiation and is developable with water or a mixture of water and alcohol and a mask material layer which contains at least a nonultraviolet-absorbing organic dye and ultraviolet-absorbing organic dye and a binder soluble or dispersible in water or a mixture of water and alcohol and is removable by means of water or a mixture of water and alcohol, wherein the nonultraviolet-absorbing and ultraviolet-absorbing materials are of compositions having compatibility with the binder.

Description

technical field [0001] The present invention relates to a photosensitive laminated printing original plate for developing letterpress printing and a method for producing a developed letterpress printing plate using the photosensitive laminated printing original plate for developing letterpress printing, and particularly relates to a method that does not contaminate a developing solution and can suppress development caused by replacing the developing solution A method for producing a high-quality photosensitive laminated printing plate for developing letterpress printing suitable for developing letterpress printing with increased cost, eliminating complicated operations, and a developing letterpress printing plate using the photosensitive laminated printing plate for developing letterpress printing. Background technique [0002] The development letterpress printing (letterpress printing) is a type of letterpress printing developed with water or a mixture of water and alcohol. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/00G03F7/11G03F7/004
CPCG03F7/032G03F7/202G03F7/0955G03F7/004G03F7/0042G03F7/0045G03F7/20
Inventor 高木利哉藤本隆史
Owner EASTMAN KODAK CO
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