Recirculating document feeder

Details Recirculating document feeder Recirculating document feeder

1986-05-13

1987-10-13

Rolla, Joseph J.

Sheet feeding or delivering

Delivering to stack and feeding therefrom

With sheet sensor for selective location

271 65, 271186, 271225, 271303, 271902, 355 3SH, 355 14SH, 355 23, B65H 506, B65H 310

Patent

active

046993657

ABSTRACT:
A recirculating document feeder for presenting document sheets to a copier apparatus for reproducing multiple collated sets of information respectively contained on one face of such document sheets, or information respectively contained on both faces of such sheets, at a rate which makes maximum use of the full reproduction rate of the copier apparatus. In the recirculating document feeder, during the first circulation of a set of document sheets, after both sides of each sheet are exposed to reproduce information contained thereon, such sheets are returned to the hopper with their facial orientation reversed with respect to their initial facial orientation in the hopper. During all during subsequent circulations of such document sheets except the last circulation, after both sides of each sheet are exposed to reproduce information contained thereon, such sheets are returned to the hopper with the facial orientation reversed with respect to their initial facial orientation in the hopper. During the last circulation, after both sides of each sheet are exposed to reproduce information contained thereon, such sheets are returned to the hopper with their facial orientation the same as their initial facial orientation in the hopper. The document feeder can also present individual document sheets to the copier platen for reproducing information contained on only one face of an individual document sheet, or information contained on both faces of an individual document sheet.

REFERENCES:
patent: 4140387 (1979-02-01), Gustafson
patent: 4169674 (1979-10-01), Russel
patent: 4174905 (1979-11-01), DiFrancesco et al.
patent: 4176945 (1979-12-01), Holzhouser et al.
patent: 4243316 (1981-01-01), Gustafson
patent: 4264067 (1981-04-01), Adams et al.
patent: 4319833 (1982-03-01), Hidding
patent: 4330197 (1982-05-01), Smith et al.
patent: 4411517 (1983-11-01), Gerken
patent: 4412740 (1983-11-01), Buddendeck et al.
patent: 4553828 (1985-11-01), Burger

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