Belt drive control device and image forming apparatus...

Details Belt drive control device and image forming apparatus... Belt drive control device and image forming apparatus...

2006-02-07

2006-02-07

Lee, Susan (Department: 2852)

Electrophotography

Image formation

Photoconductive member

C399S162000, C399S303000, C399S308000

Reexamination Certificate

active

06996357

ABSTRACT:
A belt drive control device of the present invention is constructed to sense the angular displacement or the angular velocity of a driven roller, separates from the angular displacement or the angular velocity sensed an AC component having a frequency that corresponds to the periodic thickness variation of an endless belt in the circumferential direction, and then controls the rotation of a drive roller in accordance with the amplitude and phase of the AC component.

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