Automatic document feeder and image reading apparatus using...

Details Automatic document feeder and image reading apparatus using... Automatic document feeder and image reading apparatus using...

2006-07-27

2008-09-23

Bollinger, David H (Department: 3653)

Sheet feeding or delivering

Feeding

Separators

C271S125000

Reexamination Certificate

active

07427062

ABSTRACT:
An automatic document feeder has a separation roller that separates a document into individual sheets. The document is supplied from a document supply tray. A friction pad is formed to contact one side of the separation roller to supply a friction force for separating the document. A pad holder supports the friction pad. A cover member covers the separation roller. An interlocking unit pressurizes or separates the pad holder toward or from the separation roller in association with an opening or a closing of the cover member. The interlocking unit includes a pinion gear rotating in association with the opening or the closing of the cover member. A rack gear linearly moves in a normal direction of a plane contacting the separation roller and the friction pad according to a rotation direction of the pinion gear. A connecting unit connects the rack gear and the pad holder. An elastic member elastically supports the pad holder to face the separation roller.

REFERENCES:
patent: 5181712 (1993-01-01), Perino
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patent: 11-048507 (1999-02-01), None
patent: 11-246060 (1999-09-01), None
patent: 2002-152462 (2002-05-01), None
patent: 2002-265090 (2002-09-01), None
patent: 2004-136999 (2004-05-01), None
patent: 2004-323197 (2004-11-01), None

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