Document feeding device, image forming apparatus including...

Sheet feeding or delivering – Feeding – Separator and conveyor

Reexamination Certificate

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Details

C271S010010, C271S010090, C271S004010, C271S004030, C271S004080

Reexamination Certificate

active

08038140

ABSTRACT:
A document feeding device includes a carrying unit capable of carrying documents, a drawing device drawing and supplying the documents, a drawing device drive source driving the drawing device, a separation unit including a separation device to separate the documents one by one, a separation device drive source driving the separation device, a conveying device conveying the documents, a reading unit including a reading device to read information of the documents, a discharge device discharging the documents, a first document detector provided between a document set position and the separation unit to detect the documents, and a second document detector provided downstream of the separation unit and near a separation position to detect the documents. The first and second document detectors detect the trailing end of each of the documents to control the operation of the drawing device on the basis of the result of the detection.

REFERENCES:
patent: 6923437 (2005-08-01), Huang et al.
patent: 2001/0017440 (2001-08-01), Minamishin et al.
patent: 2004/0100010 (2004-05-01), Huang et al.
patent: 2006/0180978 (2006-08-01), Aoki et al.
patent: 2006/0202404 (2006-09-01), Tokutsu
patent: 2006/0220297 (2006-10-01), Kusumi
patent: 2009/0115120 (2009-05-01), Mitsuya et al.
patent: 2010/0148423 (2010-06-01), Morita et al.
patent: 2001-031284 (2001-02-01), None
patent: 3408049 (2003-03-01), None
patent: 2005-324872 (2005-11-01), None
English language abstract of JP 09-216742, Aug. 19, 1997, Japan.

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