Image forming apparatus

Details Image forming apparatus Image forming apparatus

2008-05-20

2008-05-20

Nguyen, Judy (Department: 2854)

Electrophotography

Diagnostics

Document handling

C399S396000, C399S018000, C399S019000, C271S004020

Reexamination Certificate

active

11226426

ABSTRACT:
An image forming apparatus includes a sheet feeding cassette, transport rollers, a pick-up roller, a sheet detector, and a control section. The sheet feeding cassette stores sheets for developer images to be transferred thereonto at a secondary transfer position. The transport rollers transport a sheet at variable speeds along a sheet transport path which extends from the cassette to the secondary transfer position. The pick-up roller feeds a sheet into the sheet transport path. The sheet detector detects whether a sheet is fed from the cassette. When the detector detects that a sheet is not fed, the control section controls the pick-up roller to feed the sheet again. The control section varies respective transport speeds of the pick-up roller, a sheet feed roller, and the transport rollers, according to number of attempts to feed the sheet.

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patent: 11-249525 (1999-09-01), None
patent: 2003-206044 (2003-07-01), None

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