US3615529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid developing photographic materials containing arginine
Assignee: Fujifilm Holdings Corp
•
Filing: 1969-12-12
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Granted: 1971-10-26
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Expires: 1989-12-12
Abstract
Abstract Improved process for rapid development of photographic material, particularly a process for developing a latent image formed upon a photographic silver halide emulsion layer by treating the element with an alkaline activator solution in the presence of arginine.
Inventors
- 👤 Tatsuya Tajima
- 👤 Katsumi Hayaski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:14
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/42; Y; Y10; Y10S; Y10S430/00; Y10S430/137
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
18 words
The process as in claim 1 wherein said arginine or its salt is incorporated in said emulsion layer.
Claim 2
Dependent Claim
40 words
The process as in claim 2 wherein said member selected from the group consisting of arginine and arginine salts is incorporated in said emulsion layer in an amount of from 0.1 to 50 grams per 1 kilogram of said emulsion.
Claim 3
Dependent Claim
26 words
The process as in claim 1 wherein said member selected from the group consisting of arginine and arginine salts is incorporated in said alkaline activator solution.
Claim 4
Dependent Claim
43 words
The process as in claim 4 wherein said member selected from the group consisting of arginine and arginine salts is incorporated in said alkaline activator solution in an amount of from 0.1 to 10 grams per 1 liter of said alkaline activator solution.
Claim 5
Dependent Claim
25 words
The process as in claim 1 wherein said developing agent is selected from the group consisting of hydroquinone, catechol, 1-phenyl-3-pyrazolidone, mono-methyl-p-aminophenol sulfate and mixtures thereof.
Claim 6
Dependent Claim
17 words
The process as in claim 6 wherein the additional step of stabilizing the photographic image is performed.
Claim 7
Dependent Claim
79 words
A process for developing a latent image formed on a photographic silver halide light-sensitive emulsion layer of a photographic element, said layer containing a developing agent selected from the group consisting of hydroquinone, catechol, 1-phenyl--3-pyrazolidone, mono-methyl-p-aminophenol sulfate and mixtures thereof which comprises treating said element with an alkaline activator solution which contains from 0.1 to 10 grams, per 1 liter of solution, of a member selected from the group consisting of arginine, arginine hydrochloride, arginine sulfate and arginine carbonate.
Claim 8
Dependent Claim
83 words
A process for developing a latent image formed on a photographic silver halide light-sensitive emulsion layer of a photographic element said layer containing a developing agent, wherein said emulsion layer contains from 0.1 to 50 grams per 1 kilogram of emulsion of a member selected from the group consisting of arginine, arginine hydrochloride, arginine carbonate and arginine sulfate, which comprises treating said element with an alkaline activator solution containing from 30 to 50 grams of sodium sulfite per 1 liter of activator solution.
Claim 9
Dependent Claim
39 words
A developing process as in claim 8, wherein said activator solution contains from 30 to 50 grams of sodium sulfite per 1 liter of activator solution, and further comprising the additional step of stabilizing the photographic image is performed.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |