Automatic document feeder

Details Automatic document feeder Automatic document feeder

1984-03-07

1986-12-16

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

271258, 355 3SH, G03G 1504, G03G 2100

Patent

active

046293116

ABSTRACT:
An automatic document feeder of an electrophotographic copying apparatus includes a feeding tray, a device for feeding to an exposing station one document sheet after another from a stack of document sheets piled on the feeding tray by starting with the lowermost document sheet of the stack, and a device for returning the document sheets to the feeding tray and placing same on the uppermost document sheet of the stack after the document sheets have been treated for exposure. The automatic document feeder further includes a sensor for sensing that a job sheet is disposed beneath the lowermost document sheet of the stack of document sheets on the feeding tray. The job sheet is placed beneath the lowermost sheet of the stack of a series of document sheets piled on the feeding tray by successively stacking the document sheets with the first document sheet of the series constituting the lowermost document sheet of stack or placed over the uppermost document sheet of the stack which is constituted by the last document sheet of the series, and has a mark on its surface for controlling the automatic document feeder and a main body of the copying apparatus.

REFERENCES:
patent: 4076408 (1978-02-01), Reid et al.
patent: 4248528 (1981-02-01), Sahay

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