Sheet feeding apparatus and image forming apparatus

Details Sheet feeding apparatus and image forming apparatus Sheet feeding apparatus and image forming apparatus

2006-01-30

2008-09-02

Bollinger, David H (Department: 3653)

Sheet feeding or delivering

Feeding

Separators

C271S098000, C271S031000

Reexamination Certificate

active

07419152

ABSTRACT:
When a top sheet of a sheet stack stacked on a sheet tray capable of moving up and down is fed by sheet feeding device, air is blown to the end face of the sheet stack by air blowing device for improving a separation characteristic. The quantity of blown air for the top sheet to rise by a specified amount is determined based on a signal from rising sheet detecting device for detecting the top sheet rising by air blown by the air blowing device, and air is blown based on the determined air quantity when the sheet is fed by the sheet feeding device.

REFERENCES:
patent: 3511495 (1970-05-01), Schonfeld
patent: 6015144 (2000-01-01), Yoshii et al.
patent: 2004/0089994 (2004-05-01), Koga et al.
patent: 2004/0100013 (2004-05-01), Mathewson
patent: 2006/0175746 (2006-08-01), Adachi
patent: 2004-142881 (2004-05-01), None

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