Patent US3664833A successfully refreshed from Google Patents.
US3664833A
Expired / Lapsed
US
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Method of transferring an electrostatic image to a dielectric sheet
Assignee: Minolta Co Ltd
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Filing: 1970-06-10
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Granted: 1972-05-23
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Expires: 1990-06-10
Abstract
Abstract AN ELECTROSTATIC IMAGE IS TRANSFERRED FROM A PHOTOCONDUCTIVE LAYER ONTO A DIELECTRIC SHEETOF 10U TO 200U THICKNESS BY APPLYING AN AC CORONA DISCHARGE TO THE DIELECTRIC SHEET AND PROJECTING A UNIFORM LIGHT ONTO THE DIELECTRIC SHEET FROM AN INCANDESCENT LIGHT SOURCE. THE IMAGE ON THE DIELECTRIC SHEET IS DEVELOPED WITH TONER AND THE DIELECTRIC SHEET SI STRIPPED FROM THE PHOTOSENSITIVE MATERIAL.
Inventors
- 👤 Susumu Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:10
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/226; G03G13/00; G03G13/14; G03G13/18
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |