LITHOGRAPHIC PRINTING PLATE

摘要

PROBLEM TO BE SOLVED: To prevent minute white void defects due to an aluminum supporting body with respect to a lithographic printing plate which uses a silver complex salt diffusion transfer method and which has physical developing nuclei between a silver halide emulsion layer and an aluminum supporting body which is roughened and anodically oxidized. SOLUTION: This lithographic printing plate has physical developing nuclei between a silver halide emulsion layer and an aluminum supporting body which is roughened and anodically oxidized. The structural layers of the lithographic printing plate contain a benzimidazole or benztriazole or derivs. of these having groups selected from nitro groups, cyano groups and acyl groups.