AQUEOUS BLACK-AND-WHITE DEVELOPING COMPOSITION, BLACK-AND-WHITE PHOTOGRAPHIC DEVELOPING KIT AND PROCESSING METHOD USING THEM

摘要

PROBLEM TO BE SOLVED: To obtain a developing agent compsn. using no dihydroxybenzene. SOLUTION: This aq. black-and-white developing compsn. is a compsn. of pH7-9 contg. no dihydroxybenzene developing agent and contains an ascorbic acid developing agent, at least 0.001mol/l borate as a single buffer, a superadditive auxiliary developing agent and a preservative. The molar ratio between the ascorbic acid developing agent and the superadditive auxiliary developing agent is at least 10:1.