Belt device and image forming apparatus

Details Belt device and image forming apparatus Belt device and image forming apparatus

2008-08-27

2011-12-27

Gray, David (Department: 2852)

Electrophotography

Image formation

Transfer

C198S806000, C198S807000, C198S810010, C198S810030, C474S102000, C474S106000

Reexamination Certificate

active

08086156

ABSTRACT:
An endless belt member is suspended in a tensioned manner by a plurality of roller members including a drive roller and a drive motor drives the drive roller member so as to move the belt member in a predetermined direction of travel. A detecting unit detects an amount of displacement of the belt member in a widthwise direction of the belt member, and a correction unit that corrects displacement of the belt member in the widthwise direction. The correction unit corrects the displacement of the belt member in a widthwise direction based on data sampled by the detecting unit every time a drive signal is input to the drive motor a prescribed number of times.

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