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Flexographic printing plate developing solution composition, developing solution, and method of manufacturing original printing plate

A technology for printing original plates and flexographic printing, which is used in printing, photosensitive materials for opto-mechanical equipment, photography, etc. It can solve the problem of reducing developability, developing solution for photosensitive flexographic printing original plates, and poor layout quality. problems, to achieve the effect of improving productivity, shortening plate-making time, and excellent dispersibility

Pending Publication Date: 2021-11-09
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, when development is repeated using the same aqueous developer, there is a problem that the unphotolinked resin and image mask layer (scum) dispersed in the developer adhere to the brush, reducing developability, or re-adhesion On the surface of the printing plate, the quality of the layout is deteriorated, etc.
However, in the current situation, a developer for a photosensitive flexographic printing original plate having high performance satisfying all the problems has not yet been proposed.

Method used

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  • Flexographic printing plate developing solution composition, developing solution, and method of manufacturing original printing plate
  • Flexographic printing plate developing solution composition, developing solution, and method of manufacturing original printing plate
  • Flexographic printing plate developing solution composition, developing solution, and method of manufacturing original printing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～16、 comparative example 1～10

[0084]

[0085] The developer compositions of the components shown in Table 1 were weighed so that the total amount thereof was 1% by mass of the developer, and each developer composition was dissolved in tap water to prepare examples 1-16 and comparative examples 1-10. Aqueous developer. Specifically, the developer composition was mixed and dissolved while being gradually added in small amounts to tap water in a container while stirring.

[0086] The details of each compound shown in Table 1 are as follows.

[0087] (a) Non-ionic surfactants

[0088] Polyethylene glycol monohexyl ester (BLAUNON PEG200 (manufactured by Aoki Yu Yu Co., Ltd.) 50g and hexanoyl chloride (manufactured by Tokyo Chemical Industry Co., Ltd.) 33.5g were subjected to an esterification reaction in 1L of THF for 1 hour, and THF was evaporated using liquid. In addition, polyethylene glycol (n = 5) monohexyl (6 carbon atoms) ester)

[0089] Polyoxyethylene-2-ethylhexyl ether (BLAUNON EH-6 (manufactur...

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Abstract

Provided is a developing solution composition that achieves a high development speed even with a fine brush and can achieve, at a high level, solutions for the conventional issues of image reproductability and dispersion of a non-photo crosslinking photosensitive resin and an image masking layer in a photosensitive resin layer. This developing solution composition for water-developable, photosensitive flexographic original printing plates is characterized by: containing (a) a non-ionic surfactant of polyethylene glycol monoalkyl ether and / or monoalkyl ester having a C8-19 alkyl group and an HLB value of 11-16 and (b) at least one type of anionic surfactant selected from the group consisting of oleic acid metal salt, lauric acid metal salt, dodecylbenzene sulfonic acid metal salt, and lauryl sulfate metal salt, whereby (a):(b) is 25:75-75:25 (mass ratio); and the brush friction coefficient on an original printing plate surface being 0.60-0.75 [-] in an aqueous developing solution containing 1% by mass developing solution composition and 99% by mass water.

Description

technical field [0001] The present invention relates to an aqueous developer used in water-developable photosensitive resin printing plates, especially suitable for CTP-type flexographic printing original plates and negative film-type flexographic printing original plates having an infrared photosensitive layer containing carbon black Aqueous developer. Background technique [0002] It is common practice to use a photosensitive resin plate having a photosensitive resin layer obtained from a photosensitive resin composition on a support as a printing plate, which has become mainstream in various fields such as resin letterpress, lithography, gravure printing, and flexographic printing. As a photosensitive resin composition used for these printing plates, a photosensitive resin composition that can be developed with an aqueous developer is strongly demanded from the viewpoint of the influence on the environment and processability. As a water-developable photosensitive resin c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/00G03F7/095G03F7/11G03F7/32
CPCG03F7/32G03F7/322G03F7/305B41C1/1016
Inventor 山田裕登
Owner TOYOBO CO LTD
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