DEVELOPER FOR PHOTOSENSITIVE LITHOGRAPHIC PRINTING PLATE AND DEVELOPING METHOD

PROBLEM TO BE SOLVED: To obtain a developer which has enough gradation, which prevents defects due to a ball-point pen or residues of a ball-point pen ink, and which does not cause contamination with small spots or failure due to a sludge, by incorporating at least an alkali agent and a specified co...

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Bibliographic Details
Main Authors SUGI YASUHISA, HIRAI YOKO
Format Patent
LanguageEnglish
Published 18.12.1998
Edition6
Subjects
APPARATUS SPECIALLY ADAPTED THEREFOR
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHY
MATERIALS THEREFOR
ORIGINALS THEREFOR
PHOTOGRAPHY
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To obtain a developer which has enough gradation, which prevents defects due to a ball-point pen or residues of a ball-point pen ink, and which does not cause contamination with small spots or failure due to a sludge, by incorporating at least an alkali agent and a specified compd. SOLUTION: The developer for a photosensitive lithographic printing plate contains at least an alkali agent and a compd. expressed by the formula of HOOC-L-COOH. In the formula, L is a substd. or unsubstd. alkyl group having unsatd. bonds. The compd. expressed by the formula is a kind of unsatd. polyvalent carboxylic acid such as fumaric acid, maleic acid, itaconic acid, 2- methyleneglutaric acid, alkenyl-substd. succinic acid, 1-alkyl-1-penten-4,5- dicarboxylic acid, fatty acid maleate, 3-butene-1,2,3-tricarboxylic acid, etc. Fumaric acid or maleic acid are preferably used. In the automatic developing machine used, the developing time and the carrying speed are preferably controlled to <=10 sec and >=200 mm/min, respectively.
Bibliography:Application Number: JP19970143882