US3801323A
Expired / Lapsed
US
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Method of developing silver halide photosensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1971-10-27
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Granted: 1974-04-02
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Expires: 1991-10-27
Abstract
Abstract A photographic developing process is disclosed which comprises developing an exposed light-sensitive silver halide emulsion layer of a photographic material with an alkaline solution in the presence of hydroquinone and a derivative of p-aminophenol having the general formula WHEREIN EACH OF X and Y is selected from the group consisting of a hydrogen atom, an alkyl group having one to four carbon atoms or an alkoxy group, Z is selected from the group consisting of an alkyl group having one to four carbon atoms and an alkoxy group, and each of R1 and R2 is an alkyl group having one to four carbon atoms.
Inventors
- 👤 A Arai
- 👤 M Tanaka
- 👤 Y Tsuchiya
- 👤 K Ohkubo
- 👤 T Tajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:14
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021; G03C1/00; G03C1/005; G03C1/06; G03C1/42; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
47 words
The photographic developing process according to claim 1, wherein said hydroquinone is incorporated in said emulsion layer, in an adjacent layer to said emulsion layer or in said emulsion layer and an adjacent layer to said emulsion layer, and said derivative is incorporated in said alkaline solution.
Claim 2
Dependent Claim
47 words
A photographic developing process according to claim 1, wherein said hydroquinone is incorporated in said alkaline solution, and said derivative is incorporated in said emulsion layer, in an adjacent layer to said emulsion layer or in said emulsion layer and an adjacent layer to said emulsion layer.
Claim 3
Dependent Claim
41 words
A photographic developing process according to claim 1, wherein said hydroquinone and said derivative are incorporated in said emulsion layer, in an adjacent layer to said emulsion layer or in said emulsion layer and an adjacent layer to said emulsion layer.
Claim 4
Dependent Claim
20 words
A photographic developing process according to claim 1, wherein said hydroquinone and said derivative are incorporated in said alkaline solution.
Claim 5
Dependent Claim
26 words
A photographic developing process according to claim 2, wherein the amount of said hydroquinone is from 5 to 500 grams per mole of light-sensitive silver halide.
Claim 6
Dependent Claim
26 words
A photographic developing process according to claim 4, wherein the amount of said hydroquinone is from 5 to 500 grams per mole of light-sensitive silver halide.
Claim 7
Dependent Claim
26 words
A photographic developing process according to claim 3, wherein the amount of said derivative iS from 0.05 to 50 grams per mole of light-sensitive silver halide.
Claim 8
Dependent Claim
26 words
A photographic developing process according to claim 4, wherein the amount of said derivative is from 0.05 to 50 grams per mole of light-sensitive silver halide.
Claim 9
Dependent Claim
26 words
A photographic developing process according to claim 3, wherein the amount of said hydroquinone is from 1 to 70 grams per liter of said alkaline solution.
Claim 10
Dependent Claim
26 words
A photographic developing process according to claim 5, wherein the amount of said hydroquinone is from 1 to 70 grams per liter of said alkaline solution.
Claim 11
Dependent Claim
26 words
A photographic developing process according to claim 2, wherein the amount of said derivative is from 0.01 to 20 grams per liter of said alkaline solution.
Claim 12
Dependent Claim
26 words
A photographic developing process according to claim 5, wherein the amount of said derivative is from 0.01 to 20 grams per liter of said alkaline solution.
Claim 13
Dependent Claim
29 words
A photographic developing process according to claim 1, wherein said derivative is selected from the group consisting of 4-diethylamino-3-ethylphenol hydrochloride; 4-(N-ethyl-N-n-propylamino)-3-n-buthoxy phenol hydrochloride; 4-di-n-propylamino-2,5-dimethylphenol sulfate; and 4-di-n-butylamino-2, 5-dimethylphenol sulfate.
Claim 14
Dependent Claim
37 words
A photographic material having at least one light-sensitive silver halide emulsion layer, said material containing hydroquinone and from 0.05 to 50 grams per mole of said silver halide of a derivative of p-aminophenol having the general formula
Claim 15
Dependent Claim
29 words
An alkaline solution for photographic development, which contains hydroquinone and from 0.01 to 20 grams per liter of said solution of a derivative of p-aminophenol having the general formula
Claim 16
Dependent Claim
46 words
The photographic developing process according to claim 1, wherein said hydroquinone is incorporated in any one of said emulsion layer, a protective layer adjacent to said emulsion layer, or an undercoat layer adjacent to said emulsion layer, and said derivative is incorporated in said alkaline solution.
Claim 17
Dependent Claim
46 words
The photographic developing process according to claim 1, wherein said hydroquinone is incorporated in said alkaline solution, and said derivative is incorporated in any one of said emulsion layer, a protective layer adjacent to said emulsion layer, or an undercoat layer adjacent to said emulsion layer.
Claim 18
Dependent Claim
40 words
A photographic developing process according to claim 1, wherein said hydroquinone and said derivative are incorporated in any one of said emulsion layer, a protective layer adjacent to said emulsion layer, or an undercoat layer adjacent to said emulsion layer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |