Patent US3948659A successfully refreshed from Google Patents.
US3948659A
Expired / Lapsed
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Method of processing color photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1974-03-11
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Granted: 1976-04-06
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Expires: 1994-03-11
Abstract
Abstract In a bleach process or blix process for color photographic materials, the bleaching or blixing period of time can be shortened effectively by conducting the bleach or blix process in the presence of a metal complex salt of an organic acid and a compound having in the structural formula thereof the moiety of the formula ##EQU1## wherein X represents a halogen atom.
Inventors
- 👤 Seiya Yamaguchi
- 👤 Isao Shimamura
- 👤 Keiichi Adachi
- 👤 Hidefumi Sera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:29
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/42; G03C7/421
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
186 words
A bleaching method for a color photographic material which has been subjected to imagewise exposure and development, said bleaching method comprising processing the developed photographic material with an aqueous solution containing (1) a metal complex salt of an organic acid as a bleaching agent, said metal selected from the group consisting of iron (III), cobalt (III) and copper (II), and (2) a compound ##EQU10## represented by the general formula ##EQU11## wherein A represents --COR, --SO 2 R, or R; B represents --COR', --SO 2 R', a hydrogen atom or an alkali metal atom, at least one of A and B being --COR, --SO 2 R, --COR' or --SO 2 R'; X represents a halogen atom; and R and R' each represents an akyl group, an aralkyl group or an aryl group; said R and R' may combine to form a cyclic compound selected from the group consisting of a N-halogen phthalimide, a N-halogen succinimide, a N-halogen saccharin, a N-halogen barbituric acid, a N-halogen hydantoin and a N-halogen isocyanuric acid, and said cyclic compound may have two or more nitrogen atoms each substituted with a halogen atom.
Claim 2
Dependent Claim
186 words
A bleaching method for a color photographic material which has been subjected to imagewise exposure and development, said bleaching method comprising processing the developed photographic material with an aqueous solution containing (1) a metal complex salt of an organic acid as a bleaching agent, said metal selected from the group consisting of iron (III), cobalt (III) and copper (II), and (2) a compound ##EQU10## represented by the general formula ##EQU11## wherein A represents --COR, --SO 2 R, or R; B represents --COR', --SO 2 R', a hydrogen atom or an alkali metal atom, at least one of A and B being --COR, --SO 2 R, --COR' or --SO 2 R'; X represents a halogen atom; and R and R' each represents an akyl group, an aralkyl group or an aryl group; said R and R' may combine to form a cyclic compound selected from the group consisting of a N-halogen phthalimide, a N-halogen succinimide, a N-halogen saccharin, a N-halogen barbituric acid, a N-halogen hydantoin and a N-halogen isocyanuric acid, and said cyclic compound may have two or more nitrogen atoms each substituted with a halogen atom.
Claim 3
Dependent Claim
20 words
The bleaching method of claim 1, in which said aqueous solution is used as a color photographic process bleach solution.
Claim 4
Dependent Claim
28 words
The bleaching method of claim 1, in which said aqueous solution is used as a color photographic process blix solution containing a fixing agent and a bleaching agent.
Claim 5
Dependent Claim
53 words
The bleaching method of claim 1, in which said compound is selected from the group consisting of N-chlorophthalimide, N-bromophthalimide, N-chlorosuccinimide, N-bromosuccinimide, N-iodosuccinimide, N-chlorosaccharin, N-iodosaccharin, N-bromosaccharin, N,N'-dichlorodiethylbarbituric acid, N,N'-dibromodiethylbarbituric acid, 1,3-dibromo-5,5-dimethylhydantoin, 3-chloro-5,5'-dimethylhydantoin, 1,3-dichloro-5,5-dimethylhydantoin, 1,3-dibromo-5,5-dimethylhydantoin, 1,3-diiodo-5,5-dimethylhydantoin, sodium dichloroisocyanurate, potassium dichloroisocyanurate, trichloroisocyanuric acid, N-bromo-ε-caprolactam, N-bromoacetamide, N-iodobutylamide, N-iodobenzamide, benzenesulfonchloramide sodium salt (di-hydrate), and p-toluenesulfonchloramide sodium salt (di-hydrate).
Claim 6
Dependent Claim
27 words
The bleaching method of claim 1, in which said aqueous solution contains said compound at about 0.005 to about 50 g per liter of said aqueous solution.
Claim 7
Dependent Claim
17 words
The bleaching method of claim 1, in which said metal complex salt is a ferric complex salt.
Claim 8
Dependent Claim
87 words
The bleaching method of claim 1, in which the organic acid of said metal complex salt is an organic acid represented by the formula ##EQU12## wherein X represents a hydrocarbon group, an oxygen atom, a sulfur atom, or --NR 6 ; R 1 , R 2 , R 3 , R 4 , and R 5 each represents a hydrogen atom or a hydrocarbon group; and R 6 represents a hydrogen atom or a hydrocarbon group; or an alkali metal or ammonium salt of said organic acid.
Claim 9
Dependent Claim
28 words
The bleaching method of claim 1, in which said aqueous solution contains said metal complex salt at about 20 to 200 g per liter of said aqueous solution.
Claim 10
Dependent Claim
36 words
The bleaching method of claim 3, in which said fixing agent in said blix solution is selected from the group consisting of a thiosulfate, a thiocyanate, a sulfur-containing organic dibasic acid, an organic diol, and imidazolidinethion.
Claim 11
Dependent Claim
27 words
The bleaching method of claim 3, in which said blix solution contains said fixing agent at about 40 g to 400 per liter of said blix solution.
Claim 12
Dependent Claim
20 words
The bleaching method of claim 1, in which said aqueous solution has a pH of about 5.0 to about 7.5.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |