Positive/negative type photosensitive planographic printing plate and production of planographic printing plate by using this plate

Abstract

PURPOSE: To obtain the exposed visible image characteristic and sensitivity improved in negative type processing and to improve printing resistance by providing a photosensitive layer contg. an orthoquinone diazide compd., an alkali soluble resin, org. dyes and one kind of a compd. having a specific thiazole ring on a base. CONSTITUTION: The photosensitive layer formed of the photosensitive compsn. which contains the orthoquinone diazide compd., the alkali soluble resin and the org. dyes and contains one kind of the compd. having the thiazole ring expressed by any of the formulas I, II and III is provided on the base. In the formulas I to III, R 1 and R 2 respectively denote a hydrogen atom, halogen atom, alkyl group, alkoxy group, amino group or nitro group. The exposed visible image characteristic and sensitivity improved in the processing process for obtaining the negative type images are obtd. in this way and the printing resistance is improved. COPYRIGHT: (C)1990,JPO&Japio

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    US-5716753-AFebruary 10, 1998Fuji Photo Film Co., Ltd., Fuji Film Olin Co., Ltd.Positive-working quinone diazide resist composition containing organic phosphoric compound and an amine and process for the formation of fine pattern using same