PHOTOSENSITIVE COMPOSITION, PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE AND DEVELOPING METHOD

摘要

PURPOSE: To obtain a photosensitive compsn. excellent in adhesiveness to a substrate, ensuring printing resistance, having superior developability, developable with an alkaline aq. soln. not contg. a solvent without generating sludge in the developing bath and also having wide development latitude. CONSTITUTION: This photosensitive compsn. contains (a) a photosensitive high molecular compd. soluble or swellable in an aq. alkali soln. and having at least two photodimerizable unsatd. double bonds bonded to an arom. ring and at least one of sulfonate and sulfonic acid groups as a side chain and (b) diazo resin.