US3756843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing electrophotographic coatings
Assignee: Fujifilm Holdings Corp
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Filing: 1971-01-12
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Granted: 1973-09-04
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Expires: 1991-01-12
Abstract
Abstract PRIOR BLENDING WITH A RESIN BINDER, AN INORGANIC PHOTOCONDUCTIVE POWDER IS WETTED WITH AN ORGANIC SOLVENT HAVING A STRONG DISSOLVING POWER SUCH AS KETONES, PYRIDINES, BENZALDEHYDE, NITROBENZENE, ETHYLENEDIAMINE, ETC. BY VIRTUE OF THE PRETREATMENT OF THE PHOTOCONDUCTIVE POWDER, THE PERIOD FOR BLENDING WITH A RESIN BINDER SOLUTION IS REMARKABLY REDUCED, AND THE RESULTING COATING EXHIBITS A HIGH SENSITIVITY TO LIGHT WITH AN IMPROVED SURFACE SMOOTHNESS. THE COATING IS ESPECIALLY SUITED FOR LIQUID DEVELOPMENT. THIS INVENTION IS AN IMPROVEMENT OF THE METHOD DESCRIBED IN BRITISH PATENT NO. 1,067,116.
Inventors
- 👤 S Honjo
- 👤 H Miyatuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:52
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |