| 摘要 |
PURPOSE:To suppress generation of sludge in a bleach-fix bath and to enhance silver bleaching performance and silver recovering efficiency by admitting an overflow liquid of a color developing soln. into the bleach-fix bath. CONSTITUTION:For example, the overflow liquid from a color developing tank 1 and a stabilizing tank 5 is admitted into the bleach-fixing tank 2. The color developing soln. to be used contains a p-phenylene diamine color forming agent and various additives and is more preferably incorporated therein with an aminocarboxylic or aminophosphonic acid compd. in combination. The metal complex salt of (amino)polycarboxylic acid is preferably used for the bleaching agent of the bleach-fix bath and a chelate compd. is preferably incorporated into a stabilizer. The cyan coupler selected from the formula, etc., is preferably incorporated into the photosensitive material. In the formula, Y denotes -COR4, etc.; R3 denotes a ballast group; R4 denotes an alkyl, etc.; Z denotes H, a group to be eliminated by coupling with the oxidant of the developing agent. |
