US3716294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic quick copying apparatus
Assignee: Canon Inc
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Filing: 1970-07-08
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Granted: 1973-02-13
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Expires: 1990-07-08
Abstract
Abstract AN ELECTROSTATIC QUICK COPYING DEVICE INCLUDES A DRIVE ROLLER FOR TRANSPORTING PHOTOSENSITIVE PAPER AND TWO DRIVE MEANS FOR DRIVING THE ROLLER AT DIFFERENT SPEEDS, I.E. FAST AND SLOW SPEEDS, BY A FREE WHEEL AND A CLUTCH, RESPECTIVELY. AT LEAST A PAIR OF SWITCHES IS DISPOSED IN THE PATH OF THE PHOTOSENSITIVE PAPER FOR ENGAGING AND DISENGAGING THE CLUTCH, WHEREBY THE PHOTOSENSITIVE PAPER IS SLOWLY MOVED FOR A SHORT TIME DURING EXPOSURE SO AS TO ENABLE THE EXPOSURE TO BE ACCOMPLISHED BY AT LEAST ONE XENON FLASH MEANS. D R A W I N G
Inventors
- 👤 W Knechtel
- 👤 D Schaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:47
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/04; G03G15/043
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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |