US3795513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of storing an electrostatic image in a multilayered photoreceptor
Assignee: Xerox Corp
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Filing: 1971-09-02
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Granted: 1974-03-05
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Expires: 1991-09-02
Abstract
Abstract A XEROGRAPHIC MEMBER HAVING A SUPPORTING SUBSTRATE WHICH CONTAINS AN ELECTRICALLY INSULATING BLOCKING LAYER, A LAYER OF VITREOUS SELENIUM CONTAINING A THALLIUM DOPANT OVERLAYS THE BARRIER LAYER AND A LAYER OF A PHOTOCONDUCTOR TRANSPORT MATERIAL OVERLAYS THE THALLIUM DOPED LAYER, THE MEMBER IS IMAGED BY UNIFORMLY POSITIVE CHARGING THE TOP SURFACE WHILE SUMULTANEOUSLY EXPOSING TO LIGHT, CHARGING TO A NEGATIVE POLARITY AND EXPOSING TO IMAGING LIGHT WHEREBY A LATENT ELECTROSTATIC IMAGE IS FORMED WITHIN THE THALLIUM DOPED LAYER.
Inventors
- 👤 A Ciuffini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:52
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/0433; G03G5/08; G03G5/082; G03G5/08207; G03G5/14; G03G5/142; G03G5/144
Claims Analysis
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References 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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |