Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Bleaching
Patent
1993-09-14
1994-08-16
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
Bleaching
430393, 430418, 430460, 430461, 430963, G03C 700, G03C 544, G03C 538, G03C 542
Patent
active
053386493
ABSTRACT:
A process for bleaching or bleach-fixing an imagewise exposed silver halide photographic material is provided, comprising developing in a color developing solution and bleaching or bleach-fixing in a processing composition having a bleaching capacity containing as a bleaching agent a metal chelate compound of a chelate-forming compound or salt thereof and a metal ion selected from the group consisting of Fe(III), Mn(III), Co(III), Rh(II), Rh(III), Au(II), Au(III) and Ce(IV), the chelate-forming compound or salt thereof is represented by formula (I): ##STR1## wherein G.sub.1 and G.sub.2 each represents a carboxyl group, a phosphono group, a sulfo group, a hydroxyl group, a mercapto group, an aryl group, a heterocyclic group, an alkylthio group, an amidino group, a guanidino group or a carbamoyl group; L.sub.1, L.sub.2 and L.sub.3 each represents a divalent aliphatic group, a divalent aromatic group or a divalent connecting group formed by a combination of a divalent aliphatic group and a divalent aromatic group; m and n each represents an integer 0 or 1; R represents a hydrogen atom, an aliphatic group or an aromatic group; and M represents a hydrogen atom or a cation.
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Inaba Tadashi
Katsuoka Yasuhiro
Okada Hisashi
Seki Hiroyuki
Suzuki Ryo
Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
Pasterczyk J.
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