Photocopying – Projection printing and copying cameras – Copying both sides of original
Patent
1989-07-10
1990-06-26
Hayes, Monroe H.
Photocopying
Projection printing and copying cameras
Copying both sides of original
355 26, 355235, G03B 2732, G03B 2752
Patent
active
049376128
ABSTRACT:
An optical scanning system is provided which enables a simplex to duplex copying operation without requiring the original documents to be oriented in opposite directions at the exposure station. The invention comprises a first imaging system which accomplished a scan of the first document in a first direction (e.g. left to right). At the end of the first scan of the first document, a second document is scanned in the reverse direction by a second, relay lens system which, in one embodiment, is moved into the optical path to replace the first lens. An optical reversion is thus accomplished which permits the duplex operation to be accomplished and images of the first and second documents to be formed in proper orientation on the output duplex copies.
REFERENCES:
patent: 4111547 (1978-09-01), Stemmle
patent: 4415259 (1983-11-01), Satomi
patent: 4757353 (1988-07-01), Garofalo
Xerox Disclosure Journal, vol. 10, No. 1, Jan./Feb. 1985.
Hayes Monroe H.
Xerox Corporation
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