Patent US4083723A successfully refreshed from Google Patents.
US4083723A
Expired / Lapsed
US
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Process for color photographic processing
Assignee: Fujifilm Holdings Corp
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Filing: 1977-02-24
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Granted: 1978-04-11
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Expires: 1997-02-24
Abstract
Abstract A process for color photographic processing, which comprises subjecting an exposed silver halide color light-sensitive material to a color development using a color developer containing (1) an aromatic primary amine developing agent and (2) at least one organic compound having at least one phosphono group and at least one carboxy group in the molecule.
Inventors
- 👤 Isao Shimamura
- 👤 Junkiti Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:28
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/407; G03C7/413
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
76 words
A process for color photographic processing, which comprises subjecting an imagewise exposed silver halide color light-sensitive material to a color development using a color developer containing: (1) a p-phenylenediamine developing agent or derivative thereof and (2) at least one organic compound having at least one phosphono group and at least one carboxy group in the molecule selected from the group consisting of 2-phoshonobutane-1,2,4-tricarboxylic acid, 1-phosphonopropane-1,2, 3-tricarboxylic acid, 1-phosphonobutane-2,3,4-tricarboxylic acid, 1,1-diphosphonopropane-2,3-dicarboxylic acid, 2-phosphonobutane-2,3,4-tricarboxylic acid and 2,2-diphosphonobutane-3,4-dicarboxylic acid.
Claim 2
Dependent Claim
76 words
A process for color photographic processing, which comprises subjecting an imagewise exposed silver halide color light-sensitive material to a color development using a color developer containing: (1) a p-phenylenediamine developing agent or derivative thereof and (2) at least one organic compound having at least one phosphono group and at least one carboxy group in the molecule selected from the group consisting of 2-phoshonobutane-1,2,4-tricarboxylic acid, 1-phosphonopropane-1,2, 3-tricarboxylic acid, 1-phosphonobutane-2,3,4-tricarboxylic acid, 1,1-diphosphonopropane-2,3-dicarboxylic acid, 2-phosphonobutane-2,3,4-tricarboxylic acid and 2,2-diphosphonobutane-3,4-dicarboxylic acid.
Claim 3
Dependent Claim
47 words
The process of claim 1, wherein said organic compound having a least one phosphono group and at least one carboxy group in the molecule is present in said color developer in an amount of about 0.01 g to about 50 g per liter of said color developer.
Claim 4
Dependent Claim
19 words
The process of claim 1, wherein said color developer has a pH ranging from about 7 to about 14.
Claim 5
Dependent Claim
16 words
The process of claim 1, wherein said aromatic primary amine developing agent is a p-phenylenediamine derivative.
Claim 6
Dependent Claim
13 words
The process of claim 1, wherin the color developer additionally contains a preservative.
Claim 7
Dependent Claim
10 words
The process of claim 5, wherein said preservative is hydroxylamine.
Claim 8
Dependent Claim
12 words
The process of claim 5, wherein said preservative is alkali metal sulfite.
Claim 9
Dependent Claim
30 words
The process of claim 4, wherein said p-phenylenediamine hydrochloride, 2-amino-5-diethylaminotoluene hydrochloride, 2-amino-5-(N-ethyl-N-laurylamino)toluene, 4-[N-ethyl-N-(β-hydroxyethyl)amino]aniline sulfate, 2-methyl-4-[N-ethyl-N-(β-hydroxyethyl)amino]aniline sulfate, N-ethyl-N-(β-methanesulfoamidoethyl)-3-methyl-4-aminoaniline sesquisulfate monohydrate, N-(2-amino-5-diethylaminophenylethyl)methanesulfonamide sulfate, N,N-dimethyl-p-phenylenediamine hydrochloride, 4-amino-3-methyl-N-ethyl-N-methoxyethylaniline, 4-amino-3-methyl-N-ethyl-N-μ-ethoxyethylaniline, 4-amino-3-methyl-N-ethyl-N-β-butoxyethylaniline or the salts thereof.
Claim 10
Dependent Claim
26 words
The process of claim 1, wherein said color developer additionally contains an alkali agent, a buffer agent, a development accelerator, a sulfite, and/or an anti-fogging agent.
Claim 11
Dependent Claim
28 words
The process of claim 6, wherein the color developer contains hydroxylamine in an amount ranging from about 1 × 10 -3 to about 5 × 10 -2 mol/l.
Claim 12
Dependent Claim
27 words
The process of claim 6, wherein said organic compound having at least one phosphono group and at least one carboxy group in the molecule is 2-phosphono-1,2,4-tricarboxylic acid.
Claim 13
Dependent Claim
12 words
The process of claim 1, wherein the color developer additionally contains hydroxylamine.
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) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |