EP0329088A2
Expired / Lapsed
EP
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Processing method and bleaching solution for silver halide color photographic light-sensitive materials
Assignee: Konica Minolta Inc
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Filing: 1989-02-14
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Granted: —
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Expires: 2009-02-14
Abstract
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; wherein A₁ through A₄ are each -CH₂OH, -COOM, or -PO₃M₁M₂; M, M₁ and M₃ 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; B₁ and B₂ are a substituted or unsubstituted alkylene group having two to five carbon atoms; n is an integer of 1 to 8.
Inventors
- 👤 Satoru Kuse
- 👤 Masao Ishikawa
- 👤 Shigeharu Koboshi
- 👤 Masayuki Kurematsu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 09:57
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/42; G03C7/421
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
225 words
A method for processing a silver halide color photographic light-sensitive material comprising steps of developing said light-sensitive material with a color developer, bleaching, immediately after said developing step, said light sensitive material with a bleaching solution, and treating, after said bleaching step, said light sensitive material with a solution having fixing capability, wherein said bleaching solution comprises at least one of 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 said bleaching solution and a buffer agent capable of adjusting pH value to 3 to 7; and pH value of said bleaching solution is held within the range of from 3 to 7; wherein A₁ through A₄ are each a -CH₂OH group, a -COOM group, or a -PO₃M₁M₂ group, which may be the same with or different from each other, M, M₁ and M₃ 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, wherein A₁ through A₄ are the same as denoted in Formula A; n is an integer of 1 to 8; and B₁ and B₂, which may be the same or different from each other, are a substituted or unsubstituted alkylene group having two to five carbon atoms.
Claim 2
Independent Claim
225 words
A method for processing a silver halide color photographic light-sensitive material comprising steps of developing said light-sensitive material with a color developer, bleaching, immediately after said developing step, said light sensitive material with a bleaching solution, and treating, after said bleaching step, said light sensitive material with a solution having fixing capability, wherein said bleaching solution comprises at least one of 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 said bleaching solution and a buffer agent capable of adjusting pH value to 3 to 7; and pH value of said bleaching solution is held within the range of from 3 to 7; wherein A₁ through A₄ are each a -CH₂OH group, a -COOM group, or a -PO₃M₁M₂ group, which may be the same with or different from each other, M, M₁ and M₃ 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, wherein A₁ through A₄ are the same as denoted in Formula A; n is an integer of 1 to 8; and B₁ and B₂, which may be the same or different from each other, are a substituted or unsubstituted alkylene group having two to five carbon atoms.
Claim 3
Dependent Claim
30 words
The method of claim 1, wherein said bleaching solution contains said ferric complex salt in an amount of from 0.01 mol to 1.0 mol per liter of said bleaching solution.
Claim 4
Dependent Claim
30 words
The method of claim 2, wherein said bleaching solution contains said ferric complex salt in an amount of from 0.1 mol to 1.0 mol per liter of said bleaching solution.
Claim 5
Dependent Claim
30 words
The method of claim 3, wherein said bleaching solution contains said ferric complex salt in an amount of from 0.15 mol to 0.8 mol per liter of said bleaching solution.
Claim 6
Dependent Claim
80 words
The method of claim 1, said buffer agent is selected from compounds represented by the following formula I, II or III; Formula I A - COOH wherein A is a hydrogen atom or an organic group; Formula II B - PO₃H₂ wherein B is a hydrogen atom or an organic group; wherein C′, D and E are each a hydrogen atom or an organic group, provided that at least one of the C′, D and E is an organic group.
Claim 7
Dependent Claim
29 words
The method of claim 1, wherein said bleaching solution contains said buffer agent in an amount of from 0.01 mol to 3.0 mol per liter of said bleaching solution.
Claim 8
Dependent Claim
29 words
The method of claim 6, wherein said bleaching solution contains said buffer agent in an amount of from 0.02 mol to 2.0 mol per liter of said bleaching solution.
Claim 9
Dependent Claim
29 words
The method of claim 7, wherein said bleaching solution contains said buffer agent in an amount of from 0.1 mol to 2.0 mol per liter of said bleaching solution.
Claim 10
Dependent Claim
41 words
The method of claim 1, wherein said bleaching solution contains said ferric complex salt and said buffer agent in amounts of from 0.3 mol to 1.0 mol and from 0.1 mol to 2.0 mol per liter of said bleaching solution, respectively.
Claim 11
Dependent Claim
22 words
The method of claim 1, wherein pH value of said bleaching solution is held within the range of from 4 to 6.
Claim 12
Dependent Claim
22 words
The method of claim 10, wherein pH value of said bleaching solution is held within the range of from 4.5 to 5.8.
Claim 13
Dependent Claim
13 words
The method of claim 1, wherein said bleaching solution contains a halide compound.
Claim 14
Dependent Claim
28 words
The method of claim 11, wherein said bleaching solution contains halide compound in an amount of from 0.1 mol to 5 mol per liter of said bleaching solution.
Claim 15
Dependent Claim
28 words
The method of claim 13, wherein said bleaching solution contains halide compound in an amount of from 0.3 mol to 3 mol per liter of said bleaching solution.
Claim 16
Dependent Claim
14 words
The method of claim 1, wherein said solution having fixing capability is a fixer.
Claim 17
Dependent Claim
14 words
The method of claim 1, wherein said solution having fixing capability is a bleach-fixer.
Claim 18
Dependent Claim
23 words
The method of claim 1, wherein said bleaching step is carried out for a time of not more than 1 minute 30 seconds.
Claim 19
Dependent Claim
29 words
The method of claim 1, wherein said treating step with said solution having fixing capability is carried out for a time of not more than 3 minutes 10 seconds.
Claim 20
Dependent Claim
34 words
The method of claim 1, wherein said steps of bleaching and treating with said solution having fixing capability is carried out for a time of not more than 3 minutes 45 seconds in total.
Claim 21
Dependent Claim
181 words
A bleaching solution for processing a silver halide color photographic light-sensitive material comprising at least one of 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 said bleaching solution and a buffer agent capable of adjusting pH value to 3 to 7; and pH value of said bleaching solution is held within the range of from 3 to 7; wherein A₁ through A₄ are each a -CH₂OH group, a -COOM group, or a -PO₃M₁M₂ group , which may be the same with or different from each other, M, M₁ and M₃ 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, wherein A₁ through A₄ are the same as denoted in Formula A; n is an integer 1 to 8; and B₁ and B₂, which may be the same or different from each other, are a substituted or unsubstituted alkylene group having two to five carbon atoms.
Claim 22
Dependent Claim
181 words
A bleaching solution for processing a silver halide color photographic light-sensitive material comprising at least one of 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 said bleaching solution and a buffer agent capable of adjusting pH value to 3 to 7; and pH value of said bleaching solution is held within the range of from 3 to 7; wherein A₁ through A₄ are each a -CH₂OH group, a -COOM group, or a -PO₃M₁M₂ group , which may be the same with or different from each other, M, M₁ and M₃ 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, wherein A₁ through A₄ are the same as denoted in Formula A; n is an integer 1 to 8; and B₁ and B₂, which may be the same or different from each other, are a substituted or unsubstituted alkylene group having two to five carbon atoms.
References Cited (Backward Citations)
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