Photothermographic element
Abstract
Abstract A SENSITIZING DYE WHICHH IS A MEROCYANINE DYE CONTAINING A RHODANINE, THIOHYDANTOIN OR 2-THIO-2,4-OXAZOLIDINEDIONE NUCLEUS IN COMBINATION WITH AN IMAGE-FORMING COMNBINATION COMPRISING (A) A REDUCING AGENT, SUCH AS A PHENOLIC REDUCING AGENT, AND (B) AN OXIDIZING AGENT, SUCH AS A HEAVY METAL SALT OF AN ORGANIC CARBOXYLIC ACID, WITH (C) A CATALYST FOR THE DESCRIBED IMAGE-FORMING COMBINATION, E.G., PHOTOSENSITIVE SILVER HALIDE AND PREFERERABLY WITH (D) AN ACTIVATOR- TONING AGENT, SUCH AS A CYCLIC IMIDE, IN A PHOTOSENSITIVE AND THERMOSENSITIVE COMPOSITION OR ELEMENT, PROVIDES INCREASED PHOTOSENSITIVITY, ESPECIALLY IN THE BLUE REGION OF THE SPECTRUM, FASTER DEVELOPMENT, HIGHER MAXIMUM DENSITY, A MORE NEUTURAL TONE AND LESS BACKGROUND DENSITY DUE TO POST-PROCESSING PRINTOUT. THE DESCRIBED COMBINATION CAN ALSO CONTAIN A DIVALENT METAL SALT IMAGE AMPLIFIER, SUCH AS ZINC ACETATE, AN IMAGE STABILIZER PRECURSOR, SUCH AS AN AZOLE THIOETHER STABILIZER PRECURSOR, AND A PHOTOGRAPHIC SPEED INCREASING, ONIUM PRECURSOR, AND A PHOTOGRAPHIC SPEED INCREASING,ONIUM HALIDE.
Inventors
- 👤 R Mauriac
- 👤 W Gaugh
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |