US3660100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct-print light-developable emulsion
Assignee: Xerox Corp
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Filing: 1968-12-04
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Granted: 1972-05-02
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Expires: 1988-12-04
Abstract
Abstract A photographic emulsion of the silver chlorobromide direct-print light-developable type containing lead and thallium salts. Optimum results may be obtained by addition of gold and iodide salts and certain spectral sensitizing dyes.
Inventors
- 👤 Robert E Heeks
- 👤 Donald P Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/49
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
71 words
A photosensitive direct-print light-developable material comprising a photosensitive layer consisting essentially of a silver halide, a binder, about 0.01 to about 0.1 mole percent of a trivalent gold salt, about 0.4 to about 10 mole percent iodide salt, about 0.5 to about 3.0 mole percent of a bivalent lead salt and about 0.005 to about 0.02 mole percent of a monovalent thallium salt, all mole percents based on moles of silver.
Claim 2
Dependent Claim
64 words
A photosensitive direct-print light-developable material comprising a photosensitive layer consisting essentially of a silver halide, a binder, about 1.4 mole percent of an iodide salt, about 0.03 mole percent of a trivalent gold salt, about 1.8 mole percent of a bivalent lead salt and about 0.005 to about 0.017 mole percent of a monovalent thallium salt all mole percents based on moles of silver.
Claim 3
Dependent Claim
44 words
The direct-print light-developable material of claim 1 wherein there is included a sensitizing amount of a dye selected from the group consisting of 3-ethylthiazoline-3-ethylrhOdaine-2''-methyldimethine merocyanine; 3-ethylthiazoline-3-(p-sulfophenyl)-rhodanine-2''-methylidimethine merocyanine; 3,4-diethylthiazoline-3-carboxyethyl rhodanine-2''-methyldimethine merocyanine; 1:3:3-trimethylindoline-dimethine merocyanine; 3-ethylthiazoline-3-ethyl-2-thio-2:4(3:5) oxaazoledione-dimethine merocyanine; 2'' ,4'' ,5'' ,7''-tetraiodofluorescein disodium salt and mixtures thereof.
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |