Sheet feeding or delivering – Delivering to stack and feeding therefrom – With sheet sensor for selective location
Patent
1981-09-16
1984-07-03
Stoner, Jr., Bruce H.
Sheet feeding or delivering
Delivering to stack and feeding therefrom
With sheet sensor for selective location
271 65, 271186, 271DIG9, 271270, 355 14SH, 355 23, B65H 522, B65H 3112
Patent
active
044575068
ABSTRACT:
A servo-controlled recirculating automatic document feeder (RADF) includes a plurality of independently driven document transport devices. A picker mechanism separates documents in seriatim from a stack. An entry turnaround transport device buffers and delivers picked documents to a platen transport device for exposure. After exposure, the document is transported along a simplex or duplex path for duplex or simplex copying. The document is then buffered in an exit turnaround transport device and is subsequently returned to the stack. Each transport device is independently driven by a motor and a closed-loop servo. A common reference oscillator generates source signals for the servo-loops. A microcomputer operates on the source signals and generates reference signals for driving the transport devices.
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IBM Tech. Disc. Bull., vol. 22, No. 4, Sep. 1979, Ho.
Ashbee William H.
Beran Mark A.
Colglazier Donald F.
Janssen Donovan M.
Mantey John P.
Barlow James E.
Cockburn J. G.
International Business Machines - Corporation
Rohrer C. E.
Stoner Jr. Bruce H.
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