Sheet feeding apparatus and image forming apparatus

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

2007-04-30

2009-12-22

Mackey, Patrick H (Department: 3653)

Sheet feeding or delivering

Feeding

Separators

C271S098000, C271S152000

Reexamination Certificate

active

07635125

ABSTRACT:
An air blowing portion blows air to the end of sheets supported by a lifting and lowering tray. The sheets blown up by the air from the air blowing portion are sucked and conveyed by a sucking and conveying portion. The sheets are preliminarily blown up above the suckable rang. Then, the sheets are lowered to the suckable range before a sucking and conveying operation is started. In the above operation, the tray is lifted, and thereafter the tray is lowered until the sheets reach the suckable range while repeating a step operation of performing a lowering operation and a stop operation based on detection of the upper surface of the sheets by a sheet detecting mechanism.

REFERENCES:
patent: 5645274 (1997-07-01), Ubayashi et al.
patent: 7364150 (2008-04-01), Nakane
patent: 2002/0005610 (2002-01-01), Moore et al.
patent: 2005/0206068 (2005-09-01), Sasaki et al.
patent: 2006/0012107 (2006-01-01), Ueda et al.
patent: 2007/0228639 (2007-10-01), Matsumoto et al.
patent: 7-196187 (1995-08-01), None

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