US3748137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive and thermosensitive elements and process for development
Assignee: Eastman Kodak Co
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Filing: 1970-12-10
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Granted: 1973-07-24
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Expires: 1990-12-10
Abstract
Abstract Thermosensitive and photosensitive elements, and a process for the development thereof, are provided which comprise a support, an electrolessly deposited layer of a conductive metal, and a photosensitive layer. Suitable electrolessly deposited layers include nickel, cobalt, and nickel-cobalt alloy. Suitable photosensitive materials include any heat developable or heatstabilizable materials. Of particular interest are photosensitive elements comprising an electrolessly deposited metal in contact with a diazo composition, a heat developable oxidation-reduction image-forming composition, or a stabilizable print-out emulsion as set forth in Bacon et al., U.S. Pat. No. 3,447,927. Such elements may be developed or stabilized by the application of an electric current to the electrolessly deposited conductive metal, to produce heat.
Inventors
- 👤 C Glover
- 👤 J Worth
- 👤 H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:53
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/102; G03C; G03C1/00; G03C1/005; G03C1/49; G03C1/494; G03C1/498; G03C1/52; G03C1/61; G03C1/76; G03C1/775; G03C5/00; G03C5/26; G03C5/261; G03C5/262
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
28 words
A photosensitive element as set forth in claim 1 wherein said electrolessly deposited layer is selected from the group consisting of nickel, cobalt, nickel-cobalT alloys, palladium, and copper.
Claim 2
Dependent Claim
37 words
A photosensitive element as set forth in claim 1 wherein said photosensitive layer comprises silver halide catalyst-forming means and heat-sensitive reactant image-forming means including an organic silver salt oxidizing agent and a reducing agent for silver ions.
Claim 3
Dependent Claim
21 words
A photosensitive element as set forth in claim 3 wherein said electrolessly deposited layer comprises nickel, cobalt, or a nickel-cobalt alloy.
Claim 4
Dependent Claim
43 words
A photosensitive element as set forth in claim 1 wherein said photosensitive layer comprises a radiation-sensitive metal salt and a light stable oxidation-reduction reaction composition which is capable of being catalyzed into reaction by free metal nuclei initially formed by exposure to radiation.
Claim 5
Dependent Claim
21 words
A photosensitive element as set forth in claim 5 wherein said electrolessly deposited layer comprises nickel, cobalt, or a nickel-cobalt alloy.
Claim 6
Dependent Claim
35 words
A photosensitive element as set forth in claim 1 wherein said photosensitive layer comprises an oxidation-reduction image forming combination comprising a silver salt oxidizing agent with a reducing agent, a binder, and an activator-toner agent.
Claim 7
Dependent Claim
21 words
A photosensitive element as set forth in claim 7 wherein said electrolessly deposited layer comprises nickel, cobalt, or a nickel-cobalt alloy.
Claim 8
Dependent Claim
16 words
A photosensitive element as set forth in claim 1 wherein said oxidizing agent is silver behenate.
Claim 9
Dependent Claim
44 words
A photosensitive element as set forth in claim 1 wherein said photosensitive layer comprises a direct-print halogen acceptor and silver halide crystals formed in an acidic media with trivalent antimony, arsenic, bismuth, gold, iridium or rhodium ions occluded on the inside of said crystals.
Claim 10
Dependent Claim
21 words
A photosensitive element as set forth in claim 10 wherein said electrolessly deposited layer comprises nickel, cobalt, or a nickel-coblat alloy.
Claim 11
Dependent Claim
26 words
A process for the preparation of a photosensitive element comprising electrolessly depositing an electrically conductive metal upon a support and applying thereto a heat-developable photosensitive layer.
Claim 12
Dependent Claim
26 words
A process as set forth in claim 12 wherein said conductive metal is selected from the group consisting of nickel, cobalt, nickel-cobalt alloy, palladium, and copper.
Claim 13
Dependent Claim
19 words
A process as set forth in claim 13 wherein said photosensitive layer is laminated to said electrically conductive metal.
Claim 14
Dependent Claim
18 words
A process as set forth in claim 13 wherein said photosensitive material is heat-stabilizable direct-print silver halide emulsion.
Claim 15
Dependent Claim
30 words
A process as set forth in claim 15 wherein said emulsion comprises a halogen acceptor, and silver halide crystals formed in an acidic media with trivalent metal ions occluded therein.
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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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |