Patent US3668008A successfully refreshed from Google Patents.
US3668008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionized air cleaning device
Assignee: Xerox Corp
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Filing: 1969-06-04
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Granted: 1972-06-06
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Expires: 1989-06-04
Abstract
Abstract METHOD AND APPARATUS FOR CLEANING A RESIDUAL TONER POWDER IMAGE BEARING SURFACE AFTER TRANSFER OF SUBSTANTIALLY ALL OF A CHARGED TONER IMAGE THEREFROM TO A SUPPORT MEDIUM. A FLOW OF IONIZED AIR IS DIRECTED TO THE SURFACE AND NEUTRALIZES ANY CHARGE ON THE RESIDUAL PARTICLES REMAINING ON THE SURFACE AFTER IMAGE TRANSFER TO ALLOW THE PARTICLES TO BE READILY REMOVED. A NOZZLE IS UTILIZED TO DIRECT THE FLOW AGAINST THE SURFACES AND IONIZES THE AIR FLOWING THERETHROUGH BY APPLYING A POTENTIAL BETWEEN TWO ELECTRICALLY INSULATED OPPOSITE SIDES OF THE NOZZLE.
Inventors
- 👤 Gerard T Severynse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:26
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0052
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |