Circulating type of automatic document feeding apparatus and dup

Details Circulating type of automatic document feeding apparatus and dup Circulating type of automatic document feeding apparatus and dup

1988-06-28

1990-11-13

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Copying both sides of original

355320, G03B 2732, G03B 2752

Patent

active

049705431

ABSTRACT:
A circulating type of automatic document feeding apparatus comprising a document hopper which is adapted to take out the top document from the hopper or take it out from the bottom to return in onto the topmost side, a first carrying means for carrying the document form the document hopper to a first exposure portion, a document presentation portion having the first exposure portion and the second exposure portion, a second carrying means which is equipped with an inside and outside inverting means for inverting the carrying direction of the document between the first exposure portion and the second exposure portion, and a third carrying means for returning the document to the document hopper from the second exposure portion. One face of the duplex document may be exposed in the first exposure portion to continuously expose the other face thereof in the second exposure portion, so that the copying operation of the duplex document may be effected at higher speeds and furthermore with considerably reduced operations on the part of the operator.

REFERENCES:
patent: 4099150 (1978-07-01), Connin
patent: 4140387 (1979-02-01), Gustafson
patent: 4158500 (1979-06-01), DiFrancesco et al.
patent: 4247192 (1981-01-01), Komori et al.
patent: 4537497 (1985-08-01), Masuda
patent: 4745441 (1988-05-01), Maruta et al.

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