Recirculating automatic document feeder

Details Recirculating automatic document feeder Recirculating automatic document feeder

1989-04-21

1991-05-14

Grimley, A. T.

Photocopying

Contact printing

Light boxes

271 31, 271291, 271301, 271902, 355 24, 355318, G03G 2100

Patent

active

050160613

ABSTRACT:
An automatic document feeder having a recirculating conveying path with a first switchback means between the document hopper and a presentation area interfacing with the scanning exposure region of an optical reading apparatus and a second switchback means between the presentation area and the document hopper, each such switchback means being selectively operable to either invert the surfaces or reverse the leading and trailing edges of the document for presentation at the presentation area, so as to facilitate document handling in the event of jamming and to reduce the size of the feeder. Additionally, the feeder can be used in correspondence with a copying machine having a conveying path with a third switchback means located between a photosensitive drum and an intermediate tray for reversing the leading and trailing edges of the copying paper and a fourth switchback means located between the photosensitive drum and a discharge hopper for inverting the surfaces of the copying paper.

REFERENCES:
patent: 4140387 (1979-02-01), Gustafson
patent: 4319833 (1982-03-01), Hidding
patent: 4345751 (1982-08-01), Holzhauser
patent: 4744553 (1988-05-01), Hirose
patent: 4815722 (1989-03-01), Sugimoto

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