US3598580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrostatic copying process employing organic photoconductors
Assignee: AB Dick Co
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Filing: 1967-10-16
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Granted: 1971-08-10
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Expires: 1987-10-16
Abstract
Abstract A PHOTOELECTROSTATIC COPYING APPARATUS EQUIPPED WITH A REUSABLE CONTINUOUS BELT COATED WITH AN ORGANIC PHOTOCONDUCTIVE MEDIUM ADAPTED TO MOVE IN AN ORBITAL PATH. A SERIES OF PROCESSING STATIONS ARE LOCATED ADJACENT THE PATH OF MOVEMENT OF THE BELT SO THAT, IN SEQUENCE, IT MOVES PAST CHARGING, EXPOSING, DEVELOPING AND TRANSFER STATIONS PRODUCING A COPY OR MULTIPLE COPIES ON PLAIN PAPER. THE ORGANIC PHOTOCONDUCTIVE MEDIUM IS REUSABLE. IT IS READY IMMEDIATELY AFTER A DEVELOPED IMAGE IS TRANSFERRED TO THE COPY SHEET TO RECEIVE A NEW IMAGE WITH OUT PRELIMINARY MECHANICAL OR ELECTRICAL CLEANING OF THE PHOTOCONDUCTIVE MEDIUM.
Inventors
- 👤 Evan S Baltazzi
- 👤 Loren E Shelffo
- 👤 Michael Moduthagam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:12
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/26; G03G15/263; G03G15/06; G03G15/08; G03G15/09; G03G21/00; G03G21/0005; G03G21/0047; G03G2221/00; G03G2221/0005
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |