US3647448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive halocarbon and phenol derivative composition
Assignee: Eastman Kodak Co
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Filing: 1970-03-02
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Granted: 1972-03-07
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Expires: 1990-03-02
Abstract
Abstract Photographic elements having a support on which is coated a layer including a light-sensitive halocarbon and a phenol derivative like 1-naphthol, pyrocatechol or 1-methoxy-2-naphthol, yield printout images on exposure to actinic rays. The printout image can be intensified by heating.
Inventors
- 👤 Dennis E Demeyer
- 👤 Frank D Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:11
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/675
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
28 words
A photographic element as described in claim 1 wherein each of the alkyl and alkoxy radicals represented by R and R1 has from one to four carbon atoms.
Claim 2
Dependent Claim
39 words
A photographic element as described in claim 1 wherein the phenol derivative is selected from the group consisting of: a. 1-naphthol b. 2-naphthol c. 2,3-naphthalenediol d. 2.7-naphthalenediol e. 1,5-naphthalenediol f. 1-methoxy-2-naphthol g. pyrocatechol h. resorcinol i. phloroglucinol j. 4-n-hexylresorcinol
Claim 3
Dependent Claim
69 words
A photographic element for the production of printout images and comprising a support having coated thereon a layer comprising a light-sensitive polyhalocarbon selected from the group consisting of carbon tetrabromide and iodoform and a phenol derivative selected from the group consisting of 4-methoxy-1-naphthol, phloroglucinol, resorcinol, 2,3-naphthalenediol, 2,7-naphthalenediol, 1,5-naphthalenediol, 1-naphthol, 2-naphthol and 4-n-hexylresorcinol, said phenol and said halocarbon being combined in a weight ratio of from 3:1 to 1:5 respectively.
Claim 4
Dependent Claim
38 words
A photographic image-forming process for the preparation of printout images on a photographic element as described in claim 1, which process comprises imagewise exposing said element to actinic rays whereupon a printout image is produced in exposed areas.
Claim 5
Dependent Claim
20 words
A photographic process as described in claim 5 and additionally including heating said exposed element to intensifying the printout image.
References Cited (Backward Citations)
US3490907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |