Slit exposure type copying apparatus

Details Slit exposure type copying apparatus Slit exposure type copying apparatus

1978-05-04

1980-01-15

Moses, R. L.

Photocopying

Including fiber optics

355 30, G03G 1528

Patent

active

041836561

ABSTRACT:
The operation of a slit exposure type copying apparatus is controlled to avoid overheating of a transparent cover for the original supporting station by controlling either, or both, of the excitation of the exposure lamp and the return movement of the movable scanning of the original. A detector switch is mounted in the path of movement of the scanning mechanism and is actuated thereby to deenergize the exposure lamp means when the scanning mechanism has travelled a distance substantially equal to that distance required to scan the original. A minimum distance of travel for the scanning means is defined and includes at least one second detector switch which is exposed in the path of movement of the scanning mechanism and is actuatable thereby to return the scanned mechanism to its initial position. The scanning means is caused to move until the actuation of the second detector switch if the first detector switch is actuated prior thereto, or to continue movement when the second detector switch is actuated prior to the first detector switch.

REFERENCES:
patent: 3689141 (1972-09-01), Gray
patent: 3950090 (1976-04-01), Washio et al.
patent: 4007986 (1977-02-01), Komori et al.

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