Processing method for color photographic materials
AssigneeFuji Photo Film Co., Ltd.
InventorsYoshio Idota, Minoru Yamada
Life of this patent
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Abstract
A method for bleaching silver halide color photographic materials is described using a bleach solution containing an organic acid metal complex salt and hydrogen peroxide or a compound releasing hydrogen peroxide, wherein the bleaching activity of the bleach solution can be effectively maintained for a long period of time by supplying thereto a replenisher composed separately of a composition containing hydrogen peroxide or a compound releasing hydrogen peroxide and a composition containing an organic acid metal complex salt, which are separately stored and added as a mixture thereof or separately to the bleach solution when the activity thereof is weakened during processing or during storage of the bleach solution.
Claims12
A method for processing silver halide color photographic materials comprising bleaching silver halide color photographic materials with a bleach solution containing an organic acid metal complex salt and hydrogen peroxide or a compound releasing hydrogen peroxide wherein said hydrogen peroxide or said compound releasing hydrogen peroxide is present in an amount providing at least 0.02 mol hydrogen peroxide per liter of bleach solution, while adding thereto a replenisher composed separately of a first composition containing hydrogen peroxide or a compound releasing hydrogen peroxide and a second composition containing an organic acid metal complex salt.
A method for replenishing a silver halide color photographic material bleaching solution comprising an organic acid metal complex salt and hydrogen peroxide or a compound releasing hydrogen peroxide wherein said hydrogen peroxide or said compound releasing hydrogen peroxide is present in an amount providing at least 0.02 mol hydrogen peroxide per liter of bleach solution, comprising adding to said bleaching solution separately a first composition containing hydrogen peroxide or a compound releasing hydrogen peroxide, and a second composition containing an organic acid metal complex salt.
A method for processing silver halide color photographic materials comprising bleaching silver halide photographic materials with a bleach solution containing an organic acid metal complex salt and hydrogen peroxide or a compound releasing hydrogen peroxide, wherein said hydrogen peroxide or said compound releasing hydrogen peroxide is present in an amount providing at least 0.02 mol hydrogen peroxide per liter of bleach solution, while adding thereto a replenisher composed separately of a first composition containing hydrogen peroxide or a compound releasing hydrogen peroxides and a stabilizer for hydrogen peroxide, with the concentration of hydrogen peroxide or compound releasing hydrogen peroxide therein being about 5% to 50% by weight and wherein the concentration of hydrogen peroxide or compound releasing hydrogen peroxide is from about 0.5 to 3 times the initial concentration of hydrogen peroxide in the bleach solution and a second composition containing an iron aminopolycarboxylic acid complex salt and other bleaching components.
Dependencies are inferred from the claim text.