Patent US3816136A successfully refreshed from Google Patents.
US3816136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element and process of developing
Assignee: Eastman Kodak Co
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Filing: 1972-07-17
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Granted: 1974-06-11
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Expires: 1992-07-17
Abstract
Abstract A radiation-sensitive element containing incorporated processing chemicals is processed in a fluid activator which does not cause the processed element to be tacky. The element includes a fluidimpermeable support having thereon a radiation-sensitive material which is activated by the fluid developing agent and results in a processed element which is dry to the touch and is substantially free from tackiness when removed from contact with the fluid activator. If a stabilizer precursor is incorporated in the element, the image is stable to further exposure to raditaion.
Inventors
- 👤 C Goffe
- 👤 R Henn
- 👤 P Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:52
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614; G03C1/005; G03C1/06; G03C1/42; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/162
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
27 words
A process of claim 1 for obtaining a silver image in a radiation-sensitive silver halide element comprising contacting said element with a solvent containing an alkaline material.
Claim 2
Dependent Claim
21 words
A process of claim 2 in which said element also contains a stabilizer precursor capable of activation in an alkaline material.
Claim 3
Dependent Claim
39 words
A process of claim 1 comprising contacting said element with an alkaline fluid comprising a liquid containing an alkaline material or an alkaline gas, in which said element comprises a hydrophobic overcoat permeable to said alkaline material or gas.
Claim 4
Dependent Claim
23 words
A process of claim 4 in which said element contains a stabilizer precursor capable of activation in an alkaline material under said overcoat.
Claim 5
Dependent Claim
65 words
A process of claim 5 in which: a. said radiation-sensitive silver halide layer is contained in a hydrophilic binder, b. said developing agent is contained in a hydrophilic binder, c. maintaining said element in contact with said fluid for a time sufficient to develop a silver image but insufficient to render said element tacky, and d. removing said developed element from contact with said fluid.
Claim 6
Dependent Claim
13 words
A process of claim 6 in which said fluid is an alkaline solution.
Claim 7
Dependent Claim
14 words
A process of claim 6 in which said fluid is ammonia or amine vapor.
Claim 8
Dependent Claim
47 words
A process of claim 1 in which said element comprises at least one exposed radiation-sensitive silver halide layer, and at least one layer containing silver halide developing agent, the surface of said uppermost layer in said element being substantially free from tack after contacting with said fluid.
Claim 9
Dependent Claim
19 words
A process of claim 9 in which said element also comprises at least one layer containing a stabilizer precursor.
Claim 10
Dependent Claim
44 words
A multilayer radiation-sensitive element comprising a water-impermeable support having thereon a radiation-sensitive silver halide emulsion layer, said element containing a silver halide developing agent and a stabilizer precursor and having an outermost hydrophobic layer said hydrophobic layer being permeable to ammonia or an amine.
Claim 11
Dependent Claim
13 words
An element of claim 11 in which said developing agent comprises methyl gallate.
Claim 12
Dependent Claim
12 words
An element of claim 11 in which said developing agent comprises 1-phenyl-3-pyrazolidone.
Claim 13
Dependent Claim
13 words
An element of claim 11 in which said developing agent comprises ascorbic acid.
Claim 14
Dependent Claim
14 words
An element of claim 11 in which said developing agent comprises a 4,5,6-trihydroxy pyrimidine.
Claim 15
Dependent Claim
14 words
An element of claim 11 in which said stabilizer precursor comprises 3-S-thiuronium 1-methyl-propane sulfonate.
Claim 16
Dependent Claim
14 words
An element of claim 11 in which said stabilizer precursor comprises 3-S-thiuRonium propane sulfonate.
Claim 17
Dependent Claim
12 words
An element of claim 11 in which said overcoat comprises cellulose ester.
Claim 18
Dependent Claim
12 words
An element of claim 11 in which said overcoat comprises cellulose acetate.
Claim 19
Dependent Claim
13 words
An element of claim 11 in which said overcoat comprises cellulose acetate butyrate.
Claim 20
Dependent Claim
13 words
An element of claim 11 in which said overcoat comprises a cellulose ether.
Claim 21
Dependent Claim
12 words
An element of claim 11 in which said overcoat comprises ethyl cellulose.
Claim 22
Dependent Claim
25 words
An element of claim 11 in which said overcoat is a mixture of methylmethacrylate-butyl acrylate copolymer and a partial ester of a styrene-maleic acid copolymer.
Claim 23
Dependent Claim
12 words
An element of claim 11 in which said overcoat comprises a polysiloxane.
Claim 24
Dependent Claim
20 words
An element of claim 11 in which said developing agent is contained in the same layer with said silver halide.
Claim 25
Dependent Claim
20 words
An element of claim 11 in which said stabilizer percursor is contained in the same layer with said silver halide.
References Cited (Backward Citations)
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Cited
US3615529A
Cited
US3591379A
Cited
US3647460A
Cited
US3664835A
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US3666457A
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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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |