US4880728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing method for silver halide color photosensitive materials utilizing the overflow from the color developer
Assignee: Fujifilm Holdings Corp
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Filing: 1987-03-26
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Granted: 1989-11-14
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Expires: 2007-03-26
Abstract
Abstract The present invention relates to a processing method for a silver halide color photographic material, which makes it possible to substantially reduce the amount of waste liquor and the pollution of the environments. In the process, the color photosensitive material is continuously developed, and the process is characterized in that all or a part of the overflow of a color developer being substantially free from benzyl alcohol is used as a part of a processing solution used in a process other than the color development process.
Inventors
- 👤 Takatoshi Ishikawa
- 👤 Junya Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:45
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/44
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
A processing method for a silver halide color photosensitive material comprising continuously treating a silver halide color photosensitive material using a multi-step processing method including (i) a step of developing the material with a color developer which is substantially free of benzyl alcohol, and (ii) at least one additional processing step subsequent to the developing step, wherein at least a part of an overflow solution of the color developer is added to the processing solution of at least one of the subsequent processing steps, and wherein the overflow solution is added in an amount of 0.1 to 30 times the volume of color developer carried over by the photosensitive material.
Claim 2
Dependent Claim
110 words
A processing method for a silver halide color photosensitive material comprising continuously treating a silver halide color photosensitive material using a multi-step processing method including (i) a step of developing the material with a color developer which is substantially free of benzyl alcohol, and (ii) at least one additional processing step subsequent to the developing step, wherein at least a part of an overflow solution of the color developer is added to the processing solution of at least one of the subsequent processing steps, and wherein the overflow solution is added in an amount of 0.1 to 30 times the volume of color developer carried over by the photosensitive material.
Claim 3
Dependent Claim
22 words
The processing method according to claim 1 wherein the processing solution is a bleaching-fixing solution, a bleaching solution and/or a fixing solution.
Claim 4
Dependent Claim
36 words
The processing method according to claim 1 wherein the overflow solution of the color developer is used in an amount of 0.2 to 5 times the amount of a concentrated replenishing solution for the processing solution.
Claim 5
Dependent Claim
49 words
The processing method according to claim 1 wherein step (ii) the overflow solution from the development step is added to a water washing step and an overflow solution from the water washing process is further added to the processing solution of another treatment step other than the color developer.
Claim 6
Dependent Claim
31 words
The processing method according to claim 1 wherein the developer contains a primary aromatic amine in an amount of about 0.1 g to about 20 g per liter of the developer.
Claim 7
Dependent Claim
16 words
The processing method according to claim 1 wherein pH of the developer is 9 to 12.
Claim 8
Dependent Claim
23 words
The processing method according to claim 1 wherein the developer contains a buffering agent in an amount of not less than 0.1 mol/l.
Claim 9
Dependent Claim
29 words
The processing method according to claim I wherein the color developer contains benzyl alcohol in an amount of not more than 2 ml per 1 liter of the developer.
Claim 10
Dependent Claim
15 words
The processing method according to claim 1 wherein the color developer contains no benzyl alcohol.
Claim 11
Dependent Claim
40 words
The processing method according to claim 1 wherein step (ii) includes the step of treating the material in a fixing bath or bleach-and-fixing bath, which step is followed by treatment in a water washing bath having a multistage counterflow arrangement.
Claim 12
Dependent Claim
29 words
The processing method according to claim 1 wherein step (ii) includes treatment in a fixing bath or bleaching-and-fixing bath, which step is followed by treatment in a stabilization bath.
References Cited (Backward Citations)
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US4145271A
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US4186007A
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US4207157A
Cited
US4336324A
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US4567134A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |