US4155763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic processing method
Assignee: Fujifilm Holdings Corp
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Filing: 1977-09-07
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Granted: 1979-05-22
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Expires: 1997-09-07
Abstract
Abstract A method for processing a silver halide color photographic light-sensitive material which comprises developing an image-wise exposed silver halide color light-sensitive material in the presence of (a) an aromatic primary amine color developing agent, (b) hydroxylamine or a hydroxylamine derivative, and (c) a 1-aryl-3-pyrazolidone derivative containing two substituent groups at the 4-position thereof.
Inventors
- 👤 Kazunori Hasebe
- 👤 Shinzo Kishimoto
- 👤 Tsutomu Hamaoka
- 👤 Masakazu Morigaki
- 👤 Yosuke Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:18
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/407; G03C7/413
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
106 words
A method for processing color images in an imagewise exposed silver halide color light-sensitive material using a developer solution of improved storage properties in contact with oxygen which comprises color developing an image-wise exposed silver halide color light-sensitive material in a developer solution containing (a) an aromatic primary amine color developing agent, (b) N,N-diethylhydroxylamine, and (c) a 1-aryl-3-pyrazolidone derivative containing two substituents groups at the 4-position thereof and having the general formula (I): ##STR14## wherein R 1 is a hydroxymethyl group or a methyl group; R 2 is a hydrogen atom or a group having a Hammett substituent constant within the range of -0.40 to +0.25.
Claim 2
Independent Claim
106 words
A method for processing color images in an imagewise exposed silver halide color light-sensitive material using a developer solution of improved storage properties in contact with oxygen which comprises color developing an image-wise exposed silver halide color light-sensitive material in a developer solution containing (a) an aromatic primary amine color developing agent, (b) N,N-diethylhydroxylamine, and (c) a 1-aryl-3-pyrazolidone derivative containing two substituents groups at the 4-position thereof and having the general formula (I): ##STR14## wherein R 1 is a hydroxymethyl group or a methyl group; R 2 is a hydrogen atom or a group having a Hammett substituent constant within the range of -0.40 to +0.25.
Claim 3
Dependent Claim
20 words
The method as described in claim 1, wherein said silver halide color light-sensitive material is a color radiographic light-sensitive material.
Claim 4
Dependent Claim
23 words
The method as described in claim 1, wherein said aryl group in the 1-position of said 1-aryl-3-pyrazolidone (c) is a para-substituted phenyl group.
Claim 5
Dependent Claim
26 words
The method as described in claim 1, wherein the amount of said N,N-diethylhydroxyamine is from about 0.05g to about 10g per liter of the developer solution.
Claim 6
Dependent Claim
19 words
The method as described in claim 1, wherein the amount of said N,N-diethylhydroxyamine is from about 0.1g to 5g.
Claim 7
Dependent Claim
27 words
The method as described in claim 1, wherein said 1-aryl-3-pyrazolidone derivative is used in an amount of from about 0.1 to about 10g/l of said developer solution.
Claim 8
Dependent Claim
22 words
The method as described in claim 1, wherein said 1-aryl-3-pyrazolidone derivative is used in an amount of from about 0.2 to 5g/l.
Claim 9
Dependent Claim
23 words
The method as described in claim 1, wherein said method comprises the sequence of color development, bleaching, washing, fixing, washing, stabilizing and drying.
Claim 10
Dependent Claim
21 words
The method as described in claim 1, wherein said method comprises the sequence of color development, bleach-fixing, washing, stabilizing and drying.
Claim 11
Dependent Claim
22 words
The method as described in claim 1, wherein said method comprises the sequence of color development, stop-fixing, bleach-fixing, washing, stabilizing and drying.
Claim 12
Dependent Claim
15 words
The method as described in claim 1, wherein said 1-phenyl-3-pyrazolidone derivative has the formula ##STR15##
Claim 13
Dependent Claim
87 words
The method as described in claim 1, wherein said R 2 is a hydrogen atom, p-OH, p-CH 3 O-, m-(CH 3 ) 2 N-, p-(CH 3 ) 3 C-, p-CH 3 S-, p-C 6 H 5 O-, p-NHCOCH 3 -, m-OH, p-C 6 H 5 -, p-F-, m-COOH, m-CH 3 O-, p-COOH, m-CH 3 S-, m-C 6 H 5 -, p-Cl-, p-CH 3 -, m-NH 2 -, p-C 2 H 5 -, p-(CH 3 ) 2 CH-, m-(CH 3 ) 3 Si-, m-CH 3 - or p-Br-.
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) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |