US3697263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning residual liquid developer from electrophotographic plates
Assignee: Xerox Corp
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Filing: 1969-10-31
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Granted: 1972-10-10
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Expires: 1989-10-31
Abstract
Abstract IN LIQUID DEVELOPMENT SYSTEMS, CYCLING ELECTROSTATOGRAPHIC IMAGING SURFACES ARE SUBSTANTIALLY COMPLETELY CLEANED OF DEVELOPER REMAINING ON THE SURFACE AFTER TRANSFER TO COPY PAPER BY CYCLICALLY CONTACTING THE IMAGING SURFACE WITH A SMALL QUANTITY OF HIGHLY ABSORBENT DRY POWDER AND REMOVING THE POWDER FROM THE IMAGING SURFACE AFTER THE POWDER HAS ABSORBED THE RESIDUAL LIQUID DEVELOPER.
Inventors
- 👤 Joseph Mammino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:42
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/005; G03G21/00; G03G21/0088
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |