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Abstract
Abstract A XEROGRAPHIC APPARATUS HAVING A PHOTOSENTIVE MEMBER IN THE FORM OF A XEROGRAPHIC DRUM, SAID DRUM HAVING A CONDUCTIVE SUBSTRATE, A THIN LAYER OF CHROMIUM CONTAINED ON SAID SUBSTRATE, AND A LAYER OF PHOTOCONDUCTIVE INSULATING AMORPHOUS SELENIUM COVERING THE CENTRAL PORTION OF SAID CHROMIUM COATED DRUM LEAVING THE TWO PERIPHERAL EDGES OF SAID DRUM COATED ONLY WITH A CHROMIUM LAYER, MEANS FOR FORMING A LETENT ELECTROSTATIC IMAGE ON THE PHOTOCONDUCTIVE INSULATING LAYER, DEVELOPER MEANS INCLUDING A DEVELOPER HOUSING FOR DEVELOPING SAID LATENT ELECTROSTATIC IMAGE, MEANS ADAPTED TO FORM A CONTACT SEAL BETWEEN A PORTION OF SAID DEVELOPER HOUSING AND A PORTION OF THE CHROMIUM COATED EDGES OF THE XEROGRAPHIC DRUM, AND MEANS TO MOVE SAID XEROGRAPHIC DRUM WITH RESPECT TO SAID IMAGING AND DEVELOPER MEANS.
Inventors
- 👤 Edward M Van Wagner
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |