Patent US3619186A successfully refreshed from Google Patents.
US3619186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic diffusion transfer product and process
Assignee: Eastman Kodak Co
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Filing: 1969-02-04
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Granted: 1971-11-09
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Expires: 1989-02-04
Abstract
Abstract A receiving layer for use in a photographic diffusion transfer process comprises a proteinaceous colloid binder, a silver precipitant, a water-soluble polyvinyl quaternary salt containing a five or six membered heterocyclic nucleus containing a quaternary nitrogen atom and an iodide. The layer can also contain a silver salt or complex for improving image density and/or a toning agent.
Inventors
- 👤 Timothy F Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:20
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/24; G03C8/26; G03C8/28
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
17 words
A receiving layer of claim 1 in which said precipitating agent is finely divided noble metal nuclei.
Claim 2
Dependent Claim
13 words
A receiving layer of claim 2 in which said noble metal is platinum.
Claim 3
Dependent Claim
13 words
A receiving layer of claim 2 in which said metal nuclei are palladium.
Claim 4
Dependent Claim
13 words
A receiving layer of claim 2 in which said metal nuclei are gold.
Claim 5
Dependent Claim
14 words
A receiving layer of claim 1 in which said polyvinyl salt is poly(1,2-dimethyl-5-vinylpyridinium methylsulfate).
Claim 6
Dependent Claim
14 words
A receiving layer of claim 1 in which said polyvinyl salt is poly(1-methyl-4-vinylpyridinium methylsulfate).
Claim 7
Dependent Claim
17 words
A receiving layer of claim 1 in which said polyvinyl salt is poly(2-vinylpyridinium methyl para toluene sulfate).
Claim 8
Dependent Claim
13 words
A receiving layer of claim 1 which comprises a silver salt or complex.
Claim 9
Dependent Claim
14 words
A receiving element comprising a support having thereon said receiving layer of claim 1.
Claim 10
Dependent Claim
12 words
A receiving element of claim 10 in which said support is paper.
Claim 11
Dependent Claim
27 words
A photographic element comprising a support having thereon said receiving layer of claim 1 and having over said layer an overcoat of a photographic silver halide emulsion.
Claim 12
Dependent Claim
15 words
A receiving element according to claim 10 in which said support is plastic film base.
Claim 13
Dependent Claim
82 words
A photographic element comprising an image in a proteinaceous receiving layer on a support, said image obtained by a diffusion transfer process, said receiving layer comprising a proteinaceous binder, a silver precipitating agent, a water-soluble basic polyvinyl quaternary salt and an alkaline iodide, said quaternary salt having a polyvinyl chain of two to 10,000 monomeric units, at least one monomeric unit of which is linked to a five to six membered heterocyclic nucleus, one of said heteroatoms being a quaternary nitrogen atom.
Claim 14
Dependent Claim
89 words
A process of obtaining an image in a proteinaceous receiving layer comprising diffusing silver complex from undeveloped areas of an exposed and developing silver halide emulsion to said receiving layer, said receiving layer comprising a proteinaceous binder, a silver precipitating agent, a water-soluble polyvinyl quaternary salt and an alkaline iodide, said quaternary salt having a polyvinyl chain of two to 10,000 monomeric units, at least one monomeric unit of which is linked to a five to six membered heterocyclic nucleus, one of said heteroatoms being a quaternary nitrogen atom.
Claim 15
Dependent Claim
16 words
a process of claim 15 in which said receiving layer comprises a silver salt or complex.
Claim 16
Dependent Claim
14 words
A process of claim 15 in which the said polyvinyl salt is poly(1,2-dimethyl-5-vinylpyridinium methylsulfate).
Claim 17
Dependent Claim
14 words
A process of claim 15 in which the said polyvinyl salt is poly(1-methyl-4-vinylpyridinium methylsulfate).
Claim 18
Dependent Claim
17 words
a process of claim 15 in which the said polyvinyl salt is poly(2-vinylpyridinium methyl para toluene sulfonate).
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |