Automatic document feeder

Details Automatic document feeder Automatic document feeder

1991-09-23

1993-02-02

Skaggs, H. Grant

Sheet feeding or delivering

Delivering to stack and feeding therefrom

With sheet sensor for selective location

271258, 271265, B65H 522

Patent

active

051832402

ABSTRACT:
A sensor (SEN6a) is provided for detecting a presence of a document sheet at a specified position during a transit path of document sheets supplied. According to detection output from this sensor (SEN6a), a continuous presence time of a document sheet is obtained, and if the continuous presence time obtained is longer than the continuous document presence time obtained last time, this is regarded as an indication of a multiple feed of document sheets, and the feeding of document sheets is stopped.

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patent: 5056771 (1991-10-01), Beck et al.
IBM Technical Disclosure Bulletin, Conly et al, Job Interrupt After Copies Jams, Jun. 1982, vol. 25, No. 1, pp. 249-250.

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