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US 6,905,813 B2Granted
Processing agent for silver halide color photosensitive material and processing method thereof
AssigneeChugai Photo Chemical Co. Ltd.
InventorHiroyuki Habu
Life of this patent
Estimating the term…
Abstract
Processing with adding either of the following compounds (a), (b) and (c) to a bleaching and fixing processing solution is performed. (a) at least one selected from a group having a structure represented by a general formula [I] as described below; (b) at least one of an aminopyridine-type compound with acid dissociation constant (pKa) thereof is in the range of 5.5 to 8.5; (c) at least one of a polyethyleneimines having a structure represented by the following general formula [II].
Claims6
A processing solution for silver halide color photographic sensitive material comprising:
- at least one of a fixing ability and a stabilizing ability;
- and
- at least one of compounds (a) and (b):
- (a) at least one selected from compounds having a structure represented by a following general formula [I], acid dissociation constant (pKa) of the compounds being in a range of 5.5 to 8.5,
- wherein, in the formula [I], each of R.sup.1 and R.sup.2, represents at least one of a normal chain and a branching alkylene group which is substituted for an amino group, and n is an integer of 0 to 2, R.sup.11, R.sup.12, R.sup.13, R.sup.14 and R.sup.15 each represents at least one of a hydrogen atom and alkyl group of a normal chain having 1 to 4 carbon atoms and a branching alkyl group having 1 to 4 carbon atoms, the normal alkyl group and the branching alkyl group are substituted for at least one of the amino group, a sulfone group and a hydroxyl group;
- except the formula [I] with n thereof being 0, R.sup.2 thereof having 2 or less carbon atoms and all of R.sup.11, R.sup.12, R.sup.13, R.sup.14 and R.sup.15 thereof being hydrogen atom;
- and
- (b) at least one of aminopyridine-type compounds with acid dissociation constant (pKa) thereof being in a range of 5.5-8.5.
5 more elements
Dependencies are inferred from the claim text.