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USRE30064E Expired / Lapsed US ⏱️ 0.0 years remaining

Process for color photographic processing

Assignee: Fujifilm Holdings Corp
•
Filing: 1978-07-03
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Granted: 1979-08-07
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Expires: 1998-07-03
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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)

US2875049A Cited
DE1045373B Cited
US3201246A Cited
US3933427A Cited
US3982945A Cited

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

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