Color developer composition
AssigneeChugai Phote Chemical Co., Ltd.
InventorNobuki Sigemori
Life of this patent
Estimating the term…
Abstract
A process and a composition is described of a color developing agent for processing a silver halide color photographic material, the composition containing a paraphenylenediamine type color developing agent and an amine of formula (I) or a salt thereof R1NR2R3 (I) wherein R1 and R2 are independently selected from alkyls, phenyls, hydrogen, and substituted derivatives thereof, such substituents including hydroxyl, alkoxyl, amide, sulfoneaminde and alkyl sulfoneamide groups, and R3 represents an aromatic such as phenyl or naphthyl and substituents thereof. When used in highly concentrated solutions, the compositions are capable of preventing the precipitation of the color developer agent.
Claims4
A composition of a color developing replenishment solution for continuously processing a silver halide color photographic material, said composition comprising a paraphenylenediamine type color developing agent and an amino selected from the group consisting of compounds 1, 2, 3, 4, 9, 11, 12, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 31, 30, and salts thereof.
Dependencies are inferred from the claim text.