Method of duplex copying documents

Details Method of duplex copying documents Method of duplex copying documents

1998-05-28

1999-10-12

Royer, William

Electrophotography

Diagnostics

Document handling

271 303, 271 304, 399364, 399374, 399402, G03G 1500

Patent

active

059665564

ABSTRACT:
A method is provided for copying in which a duplex copy can be smoothly made. In making N sets of double-sided copies of M one-sided documents, a method of copying includes a first document circulating step of copying images of even ordinal numbered documents on unused sheets and then stores these sheets into an intermediate tray. The second document circulating step of copying images of odd ordinal numbered documents on rear faces of one-side copied sheets forming double-sided copied sheets which are discharged. A cycle detecting solenoid for separating each circulation of the one-sided documents is provided and breakdown judging step of judging by a controlling device that a cycle detection sensor is out of order in the case where the cycle detecting solenoid is operated and a polarity of the cycle detection sensor is not changed.

REFERENCES:
patent: 4639126 (1987-01-01), Bushaw et al.
patent: 4674866 (1987-06-01), Tanaka
patent: 5034771 (1991-07-01), Makita
patent: 5216473 (1993-06-01), Maeyama
patent: 5826154 (1998-10-01), Yamashita et al.

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