Photoelectrostatic copying machine
Abstract
Abstract AN AUTOMATIC COPYING MACHINE OPERABLE BETWEEN A REDUCED COPYING MODE AND A FULL SIZE COPYING MODE. IT HAS A TURRET LENS ASSEMBLY MOVABLE BETWEEN DIFFERENT POSITIONS FOR PROJECTING A FULL SIZE OR A REDUCED SIZE IMAGE OF AN ORIGINAL ONTO A COPY SHEET, AND A DRIVE SYSTEM FOR MOVING THE ORIGINAL AND COPY SHEET RESPECTIVELY PAST ILLUMINATING AND EXPOSURE STATIONS AT EQUAL OR UNEQUAL SPEEDS. A RESILIENT OVERTRAVEL OPERATING ASSEMBLY MOVES THE LENS ASSEMBLY BETWEEN POSITIONS AND FIRMLY HOLDS IT IN PLACE. IN THE FULL SIZE COPYING MODE THE COPY SHEET AND ORIGINAL MOVE AT THE SAME SPEED, IN THE REDUCED COPYING MODE THE ORIGINAL MOVES FASTER THAN THE COPY SHEET AND IN PROPORTION TO THE SIZE OF THE REDUCED LIGHT IMAGE. A SINGLE SWITCH CONTROLS THE COPYING MODE. DURING THE REDUCED COPYING MODE, IT TURNS ON EDGE EXPOSURE LAMPS WHICH DISCHARGE UNEXPOSED MARGINAL AREAS WHICH WOULD OTHERWISE FORM DIRTY COPY SHEET EDGES.
Inventors
- 👤 George K Lux
- 👤 James B Ellis
- 👤 John J Schulze
Bibliographic Details
Claims Analysis
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |