# US 5,352,568 A · Processing method and bleaching solution for silver halide color photographic light-sensitive materials

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- Number: US 5,352,568 A
- Document ID: US5352568A
- Status: Granted
- Kind: A
- Application number: 08/104,828
- Filed: 1993-08-11
- Granted: 1994-10-04
- Earliest claimed: 1988-02-15
- Assignees: Konica Corporation
- Inventors: Satoru Kuse; Masao Ishikawa; Shigeharu Koboshi; Masayuki Kurematsu
- Web page: https://patentgrep.com/patent/US5352568A

## 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 430/164: Rapid access processing
- 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 processing method for silver halide color photographic material and a bleaching solution used in the processing are disclosed. Sufficient desilvering in a short time and prevention of bleaching fogging can be obtained by the process. The process is applicable for silver-rich high-sensitivity color light-sensitive material. The bleaching solution comprises a of a ferric complex salts of compounds represented by the following Formula A or B in an amount of at least 0.01 mol per liter of the bleaching solution and a buffer agent capable of adjusting pH value to 3 to 7; and pH value of the bleaching solution is held within the range of from 3 to 7; ##STR1## wherein A.sub.1 through A.sub.4 are each --CH.sub.2 OH, --COOM, or --PO.sub.3 M.sub.1 M.sub.2 ; M, M.sub.1 and M.sub.3 are each a hydrogen atom, a sodium atom, a potassium atom or an ammonium group; X is a substituted or unsubstituted alkylene group having three to six carbon atoms; B.sub.1 and B.sub.2 are a substituted or unsubstituted alkylene group having two to five carbon atoms; n is an integer of 1 to 8.

## Claims

### Claim 1

A method for processing a silver halide color photographic light-sensitive material containing color couplers, and a silver chloroiodide or silver iodobromide emulsion, wherein an average silver iodide content of said emulsion is 0.1 mol % to 15 mol %, said method comprising;
imagewise exposing said light-sensitive material to light;
developing said light-sensitive material with a color developer;
bleaching said light-sensitive material, immediately after said developing, with a bleaching solution; and
treating said light-sensitive material, after said bleaching, with a fixing solution; wherein
said bleaching solution comprises at least one ferric complex salt of a compound represented by Formula A, in an amount of at least 0.01 mol per liter of said bleaching solution; ##STR33## wherein A.sub.1 through A.sub.4 are each individually --CH.sub.2 OH, --COOM, or --PO.sub.3 M.sub.1 M.sub.2 ; M, M.sub.1 and M.sub.2 are each hydrogen, sodium, potassium, or an ammonium salt; and X is substituted or unsubstituted alkylene having 3 to 6 carbon atoms,
said bleaching solution further containing at least one halide compound; and at least one buffer agent capable of adjusting a pH of said bleaching solution to a value of 3 to 7, said buffer agent being represented by Formula I:
Formula I
A--COOH
wherein A is hydrogen or an organic group having not less than 2 carbon atoms;
the pH value of said bleaching solution being 3 to 7, said bleaching step being conducted for not more than 90 seconds with a bleaching solution replenishment rate of 30 to 350 ml/m.sup.2 of light-sensitive material.

### Claim 2 (depends on 1)

The method of claim 1, wherein pH value of said bleaching solution is held within the range of from 4 to 6.

### Claim 3 (depends on 2)

The method of claim 2, wherein pH value of said bleaching solution is held within the range of from 4.5 to 5.8.

### Claim 4 (depends on 1)

The method of claim 1, wherein said fixing solution is a fixer.

### Claim 5 (depends on 1)

The method of claim 1, wherein said fixing solution is a bleach-fixer.

### Claim 6 (depends on 1)

The method of claim 1, wherein said treating step with said fixing solution is carried out for a time of not more than 3 minutes 10 seconds.

### Claim 7 (depends on 1)

The method of claim 1, wherein said steps of bleaching and treating with said fixing solution is carried out for a time of not more than 3 minutes 45 seconds in total.

### Claim 8 (depends on 1)

The method of claim 1 wherein said replenishment rate is 40 to 300 ml/m.sup.2.

### Claim 9 (depends on 8)

The method of claim 8 wherein said replenishment rate is 50 to 250 ml/m.sup.2.

### Claim 10 (depends on 1)

The method of claim 1 wherein said buffer is selected from the group consisting of acrylic acid, adipic acid, acetylenedicarboxylic acid, acetoacetic acid, azelaic acid, isocrotonic acid, isopropylmalonic acid, isobutyric acid, itachonic acid, isovaleric acid, ethylmalonic acid, capronic acid, formic acid, valeric acid, citric acid, glutaric acid, crotonic acid, chlorofumaric acid, .alpha.-chloropropionic acid, gluconic acid, glyceric acid, .beta.-chloropropionic acid, succinic acid, cyanoacetic acid, diethylacetic acid, diethylmalonic acid, citraconic acid, dimethylmalonic acid, d-tartaric acid, meso-tartaric acid, trichlorolactic acid, tricarbarylic acid, trimethylacetic acid, lactic acid, vinylacetic acid, pimelic acid, pyrotartaric acid, racemic acid, fumaric acid, propionic acid, propylmalonic acid, maleic acid, malonic acid, mesaconic acid, methylmalonic acid, monochloroacetic acid, n-butyric acid, malic acid, aspartic acid, DL-alanine, glutaminic acid and 3,3-dimethyl-glutaric acid, isophthalic acid, atropic acid, allocinnamic acid, benzoic acid, isophthalic acid, oxybenzoic acid (m-, p-), chlorobenzoic acid (o-, m-, p-), chlorophenylacetic acid (o-, m-, p-), cinnamic acid, salicylic acid, dioxybenzoic acid (2,3-, 2,4-, 2,5-, 2,6-, 3,4-, 3,5), cyclobutane-1,1-dicarboxylic acid, cyclobutane-1,2dicarboxylic acid (trans-, cis-) , cyclopropane-1,1-dicarboxylic acid, cycropropane-1,2-dicarboxylic acid (trans-, cis-) , cyclohexane-1,1-dicarboxylic acid, cyclohexane-1,2-dicarboxylic acid (trans-, cis-) , cyclohexylacetic acid, cyclopentane-1,1dicarboxylic acid, 3 , 5-dinitrobenzoic acid, 2,4dinitrophenoldiphenyl acid, teraphthalic acid, toluic acid (o-, m-, p-), naphthoic acid (.alpha.-, .beta.-), nicotinic acid, nitrobenzoic acid, nitrophenylic acid (o-, m-, p-), pyromucoic acid, hippuric acid, picolinic acid, phenylacetic acid, phenyl acid, phthalic acid, fluorobenzoic acid (o-, m-, p-), bromobenzoic acid (o-, m-, p-), hexahydrobenzoic acid, benzylic acid, dl-mandelic acid, mesitylenic acid, methoxybenzoic acid (o-, m-, p-), methoxycinnamic acid (o-, m-, p-), p-methoxyphenylacetic acid, gallic acid, aminobenzoic acid (o-, m-, p-) , N-(2-acetamido) iminodiacetic acid, ethylenediaminediacetic acid, ethylenediamine-2-propionic acid, and .beta.-aminoethyl iminodiacetic acid, amino-methylphosphono-N, N-diacetic acid, 2-phosphonoethyliminodiacetic acid, 2-phosphonobutane-1,2,4-tricarboxylic acid, and acids represented by the following formulas: ##STR34##

### Claim 11 (depends on 1)

The method of claim 1 wherein said buffer is selected from the group consisting of acrylic acid, adipic acid, acetoacetic acid, isopropylmalonic acid, isobutyric acid, itachonic acid, formic acid, valeric acid, citric acid, glutaric acid, succinic acid, diethylmalonic acid, d-tartaric acid, fumaric acid, malonic acid, n-butylic acid, malic acid, and glutamic acid.