US4040838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing color photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1976-03-05
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Granted: 1977-08-09
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Expires: 1996-03-05
Abstract
Abstract In the high temperature color development processing of color photographic materials, the formation of reticulation and scratches on the surfaces of the photographic films is prevented and drying can be performed in a shortened period of time at a high temperature by processing the color photographic materials in a bleach solution or blix solution containing a metal complex of an organic acid, a water soluble ammonium compound and a magnesium compound. The bleach solution or blix solution does not give rise to environmental pollution and can be easily regenerated for reuse.
Inventors
- 👤 Seiya Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:06
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/42; G03C7/421; Y; Y10; Y10S; Y10S430/00; Y10S430/137
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
105 words
A process of bleaching or blixing silver halide color photographic materials which comprises processing exposed and color developed photographic materials in a bleach solution or a blix solution having a pH of from 5.0 to 7.5 containing an iron III, cobalt III or copper II complex salt of an organic acid, a water soluble ammonium compound and a magnesium compound selected from the group consisting of magnesium acetate, magnesium bromide, magnesium chloride, magnesium sulfate, magnesium carbonate, magnesium citrate, magnesium hydroxide, magnesium lactate, magnesium nitrate, magnesium oxalate, magnesium oxide, magnesium perchlorate, magnesium secondary phosphate, magnesium tertiary phosphate, magnesium silicate, magnesium bromate, magnesium sulfite, or magnesium chromate.
Claim 2
Dependent Claim
105 words
A process of bleaching or blixing silver halide color photographic materials which comprises processing exposed and color developed photographic materials in a bleach solution or a blix solution having a pH of from 5.0 to 7.5 containing an iron III, cobalt III or copper II complex salt of an organic acid, a water soluble ammonium compound and a magnesium compound selected from the group consisting of magnesium acetate, magnesium bromide, magnesium chloride, magnesium sulfate, magnesium carbonate, magnesium citrate, magnesium hydroxide, magnesium lactate, magnesium nitrate, magnesium oxalate, magnesium oxide, magnesium perchlorate, magnesium secondary phosphate, magnesium tertiary phosphate, magnesium silicate, magnesium bromate, magnesium sulfite, or magnesium chromate.
Claim 3
Dependent Claim
59 words
The process as set forth in claim 1 in which said bleach solution or blix solution contains about 0.05 to about 1 mol of said complex salt of the organic acid, about 0.05 to about 2 mols of the water soluble ammonium compound, and about 0.01 to about 1 mol of the magnesium compound per liter of the solution.
Claim 4
Dependent Claim
30 words
The process as set forth in claim 1 in which said blix solution further contains about 0.1 to about 2 mols of a fixing agent per liter of the solution.
Claim 5
Dependent Claim
58 words
The process as set forth in claim 1 in which said bleach solution or blix solution contains about 0.05 to about 1 mol of the metal complex salt of the organic acid and about 0.01 to about 1 mol of an addition product of the water soluble ammonium compound and the magnesium compound per liter of the solution.
Claim 6
Dependent Claim
30 words
The process as set forth in claim 4 in which said blix solution further contains about 0.1 to about 2 mols of a fixing agent per liter of the solution.
Claim 7
Dependent Claim
23 words
The process as set forth in claim 1 in which said processing is carried out at a high temperature above about 30° C.
Claim 8
Dependent Claim
25 words
The process as set forth in claim 1 in which said water soluble ammonium compound is ammonium chloride, ammonium thiosulfate, ammonium acetate, or aqueous ammonia.
Claim 9
Dependent Claim
27 words
The process as set forth in claim 4 in which said addition product is magnesium ammonium sulfate, magnesium ammonium chromate, magnesium ammonium chloride, or magnesium ammonium carbonate.
Claim 10
Dependent Claim
22 words
The process as set forth in claim 1 in which said complex salt is a ferric complex salt of the organic acid.
Claim 11
Dependent Claim
22 words
The process as set forth in claim 9 in which said ferric complex salt is the ferric complex salt of ethylenediaminetetraacetic acid.
Claim 12
Dependent Claim
77 words
The process as set forth in claim 1, in which said water soluble ammonium compound is selected from the group consisting of ammonium tartarate, ammonium hydrogen tartarate, ammonium benzoate, ammonium borate, ammonium iodide, ammonium bromide, ammonium alum, ammonium bichromate ammonium carbonate, ammonium chloride, ammonium hydroxide, ammonium persulfate, ammonium sulfide, ammonium thiocyanate, ammonium thiosulfate, ammonium citrate, ammonium formate, ammonium metabisulfite, ammonium bromate, ammonium oxalate, ammonium acetate, ammonium hydrogen carbonate, ammonium sulfite, ammonium nitrate, ammonium sulfate or aqueous ammonia.
Claim 13
Dependent Claim
29 words
The process as set forth in claim 1, in which said magnesium compound is selected from the group consisting of magnesium acetate, magnesium bromide, magnesium chloride, or magnesium sulfate.
Claim 14
Dependent Claim
21 words
The process as set forth in claim 1, in which said organic acid is a polycarboxylic acid or a polyaminopolycarboxylic acid.
Claim 15
Dependent Claim
23 words
The process as set forth in claim 1, in which said organic acid is an organic acid represented by the following formulae: ##STR2##
Claim 16
Dependent Claim
14 words
The process of claim 6, wherein said temperature is about 40° to 56° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |