Automatic document feeder in electrophotographic copying machine

Details Automatic document feeder in electrophotographic copying machine Automatic document feeder in electrophotographic copying machine

1988-06-23

1989-11-28

Schacher, Ricahrd A.

Sheet feeding or delivering

Delivering

Multiple discharge

271301, 271902, B65H 3910

Patent

active

048832669

ABSTRACT:
An automatic document feeder in an electrophotographic copying machine for making copies of both sides of a document comprises a passageway for a document to pass through, a driving roller adapted to rotate in both normal and reverse directions and a rotatable drum. A document which has been fed is transported through the passageway by the roller rotating in the normal direction and is wrapped around the drum to reach a scanning position. After the scanning for copying operation, the document is led into the same passageway by revese rotation of the driving roller but the document is then in an upside down position such that when the roller is operated in the normal direction again, the document is wrapped around the drum with its backside exposed to the scanning light. Thus, both sides of a document can be scanned automatically.

REFERENCES:
patent: 4186662 (1980-02-01), Borneman
patent: 4431303 (1984-02-01), Hoffman
patent: 4456237 (1984-06-01), Buddendeck
patent: 4579326 (1986-04-01), Pinckney

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