SILVER HALIDE PHOTOSENSITIVE MATERIAL, ORIGINAL PLATE OF PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE AND RELIEF IMAGE FORMING METHOD

摘要

PROBLEM TO BE SOLVED: To form a relief image suitable for utilization as a planographic printing plate using a silver halide photosensitive material. SOLUTION: A phenolic compound (I) having 2-6 benzenediol or benzenetriol rings bonded through a combining group and a phenolic compound (II) having a 5-40C aliphatic substituent or a 7-40C aromatic substituent introduced into a benzenediol or benzenetriol ring are added as tanning developers to a silver halide photosensitive material with a silver halide-gelatin emulsion layer on the base.