USRE30064E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for color photographic processing
Assignee: Fujifilm Holdings Corp
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Filing: 1978-07-03
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Granted: 1979-08-07
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Expires: 1998-07-03
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
2026-10-30 14:04
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/407; G03C7/413
Claims Analysis
Total Claims: 12
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-phosphonobutane-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-phosphonobutane-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 at 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
35 words
The process of claim 1, wherein said color developer has a pH ranging from about 7 to about 14. .[.4. The process of claim 1, wherein said aromatic primary amine developing agent is a p-phenylenediamine
Claim 5
Dependent Claim
11 words
derivative..]. 5. The process of claim 1, wherein the color developer
Claim 6
Dependent Claim
11 words
additionally contains a preservative. 6. The process of claim 5, wherein
Claim 7
Dependent Claim
11 words
said preservative is hydroxylamine. 7. The process of claim 5, wherein
Claim 8
Dependent Claim
43 words
said preservative is alkali metal sulfite. 8. The process of claim .[.4.]. .Iadd.1.Iaddend. , wherein said p-phenylenediamine .Iadd.derivative is N,N-diethyl-p-phenylenediamine .Iaddend.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.]. .Iadd.4-amino-3-methyl-N-ethyl-N-β-ethoxyethylaniline.Iaddend., 4-amino-3-methyl-N-ethyl-N-β-butoxyethylaniline or the salts thereof.
Claim 9
Dependent Claim
22 words
. The process of claim 1, wherein said color developer additionally contains an alkali agent, a buffer agent, a development accelerator, a
Claim 10
Dependent Claim
23 words
sulfite, and/or an anti-fogging agent. 10. The process of claim 6, wherein the color developer contains hydroxylamine in an amount ranging from about
Claim 11
Dependent Claim
35 words
1×10 -3 to about 5×10 -2 mol/l. 11. 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 12
Dependent Claim
15 words
.Iadd.2-phosphonobutane-1,2,4-tricarboxylic acid.Iaddend.. 12. 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) | 1982-08-06 | 1983-02-05 | 1983-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-06 | 1987-02-05 | 1987-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-06 | 1991-02-05 | 1991-08-07 | $7700.00 | Window Closed / Lapsed |