# US 5,350,668 A · Method for processing silver halide color photographic material containing tabular silver iodobromide grains using a processing solution having a bleaching ability containing an iron (III) complex salt > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,350,668 A - Document ID: US5350668A - Status: Granted - Kind: A - Application number: 08/053,198 - Filed: 1993-04-28 - Granted: 1994-09-27 - Earliest claimed: 1992-04-28 - Assignees: Fuji Photo Film Co., Ltd. - Inventors: Akira Abe; Hiroyuki Seki; Hisashi Okada; Tadashi Inaba - Web page: https://patentgrep.com/patent/US5350668A ## CPC - G03C 7/421: {Additives other than bleaching or fixing agents} - G03C 7/3022: {Materials with specific emulsion characteristics, e.g. thickness of the layers, silver content, shape of AgX grains} - Y10S 430/156: Precursor compound - G03C: PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES (for photomechanical purposes G03F); PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY (photographic processes characterised by the use or manipulation of apparatus classifiable per se in subclass G03B, see G03B; photomechanical production of textured or patterned surfaces G03F; electrophotography, magnetography G03G) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A method for processing a silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer which comprises subjecting the silver halide color photographic material to imagewise exposure and color development, and then processing with a processing solution having bleaching ability, wherein the silver halide emulsion layer contains silver halide grains having a composition such that tabular silver iodobromide grains having an aspect ratio of not higher than 3 account for at least 50% of the entire projected area of the silver halide grains, and the processing solution having bleaching ability contains as a bleaching agent an iron (III) complex salt of a compound having the described structural formula, used in a concentration of 0.01 to 0.17 mol/liter. ## Claims ### Claim 1 A method for processing an imagewise exposed silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, which comprises color developing in a color developing solution containing a color developing agent, and then processing with a processing solution having a bleaching ability, characterized by a) said silver halide emulsion layer containing silver halide grains having a composition in which tabular silver iodobromide grains having an aspect ratio of not lower than 3 account for at least 50% of the entire projected area of said silver halide grains, and b) said processing solution having a bleaching ability contains an iron (III) complex salt of a compound represented by the following general formula (I) as a bleaching agent at a concentration of 0.01 to 0.17 mol/liter: ##STR16## wherein Y.sub.1 represents a non-metallic atomic group required for forming an arylene group; R represents a substituent group selected from the group consisting of an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an aryl group, a sulfonamide group, a ureido group, a urethane group, an aryloxy group, a sulfamoyl group, an alkylthio group, an arylthio group, a sulfonyl group, a sulfinyl group, an acyl group, a hydroxy group, a halogen atom, a cyano group, a sulfo group, a carboxyl group, a phosphono group, an aryloxycarbonyl group, an alkoxycarbonyl group; an acyloxy group, a nitro group and a hydroxamic acid group; n represents 0 or an integer of 1 to 4, provided that when n is 2 to 4, two or more R groups may be the same or different; X.sub.1 represents a hydrogen atom or --L.sub.1 --A.sub.2 ; X.sub.2 represents a substituent selected from the group consisting of --L.sub.2 --A.sub.3 and a group of the following formula ##STR17## X.sub.3 represents a hydrogen atom, or a substituent selected from the group consisting of a hydroxyalkyl group and --L.sub.4 --A.sub.4 ; A.sub.1 and A.sub.5 each represents a hydrogen atom, or a substituent selected from the group consisting of a carboxyl group, a sulfo group, an alkylthio group and S--L.sub.5 --COOH; A.sub.2 represents a substituent selected from the group consisting of a carboxyl group and a sulfo group; A.sub.3 and A.sub.4 each represents a carboxyl group; L.sub.2, L.sub.4 and L.sub.5 each represents an alkylene group; L.sub.1 and L.sub.3 each represents a substituent selected from the group consisting of an alkylene group and an arylene group; and W.sub.1 represents a bivalent bonding group represented by the following general formula (W) ##STR18## wherein W.sub.2 and W.sub.3 each represents an alkylene group; c represents an integer of 0 to 3; X represents --O--, --S-- or --N(R.sub.3)--; and R.sub.3 represents a hydrogen atom, an alkyl group or an aryl group. ### Claim 2 (depends on 1) The processing method as in claim 1, wherein said processing solution having bleaching ability contains ammonium ion at a concentration of not higher than 0.3 mol/l. ### Claim 3 (depends on 1) The processing method as in claim 1, wherein the silver halide emulsion layer of said silver halide color photographic material contains a compound which releases a bleaching accelerator by the reaction thereof with the oxidants of aromatic primary amine color developing agents. ### Claim 4 (depends on 1) The processing method as in claim 1, wherein said iron (III) complex salt is contained at a concentration of 0.05 to 0.16 mol/liter. ### Claim 5 (depends on 1) The processing method as in claim 1, wherein said iron (III) complex salt accounts for at least 50 mol % of the total amount of all bleaching agents in the processing solution. ### Claim 6 (depends on 1) The processing method as in claim 1, wherein said iron (III) complex salt accounts for at least 80 mol % of the total amount of all bleaching agents in the processing solution. ### Claim 7 (depends on 1) The processing method as in claim 1, wherein said aspect ratio is 5 to 30. ### Claim 8 (depends on 1) The processing method as in claim 1, wherein said tabular silver iodobromide grains have a silver iodide content of 1 to 30 mol %. ### Claim 9 (depends on 1) The processing method as in claim 1, wherein said tabular silver iodobromide grains account for at least 80% of the entire projected area of said silver halide grains. ### Claim 10 (depends on 1) The processing method as in claim 1, wherein said processing solution is a bleaching solution. ### Claim 11 (depends on 10) The processing method as in claim 10, wherein said bleaching solution has a pH of 4 to 5.5. ### Claim 12 (depends on 1) The processing method as in claim 1, wherein said Y.sub.1 is a phenylene group. ### Claim 13 (depends on 1) The processing method as in claim 1, wherein said X.sub.1 is a group represented by --L.sub.1 --A.sub.2. ### Claim 14 (depends on 1) The processing method as in claim 1, wherein said X.sub.3 is a group represented by --L.sub.4 --A.sub.4. ### Claim 15 (depends on 1) The processing method as in claim 1, wherein said A.sub.1, A.sub.2, A.sub.3, A.sub.4 and A.sub.5 each is a carboxyl group. ### Claim 16 (depends on 1) The processing method as in claim 1, wherein said W.sub.1 is selected from the group consisting of an alkylene group, an alkenylene group, an arylene group, a bivalent heterocyclic group and a bivalent bonding group composed of a combination of two or more thereof. ### Claim 17 (depends on 1) The processing method as in claim 1, wherein c represents 0. ### Claim 18 (depends on 1) The processing method as in claim 1, wherein W.sub.1 represents an alkylene group having 2 to 5 carbon atoms. ### Claim 19 (depends on 1) The processing method as in claim 1, wherein A.sub.1 represents a carboxyl group or --S--L.sub.5 --COOH. ### Claim 20 (depends on 1) The processing method as in claim 1, wherein A.sub.1 represents a carboxyl group.