Closed loop photoreceptor belt tensioner

Details Closed loop photoreceptor belt tensioner Closed loop photoreceptor belt tensioner

1999-07-29

2000-07-11

Chen, Sophia S.

Electrophotography

Image formation

Photoconductive member

19881004, 399167, G03G 1500, G03G 2100

Patent

active

060885599

ABSTRACT:
A closed loop control system precisely sets and monitors tension in a photoreceptor belt. A stepper motor is actuated by a controller to apply pressure to a yoke connected to the photoreceptor belt through a steering roll. A strain gauge positioned on the yoke senses the pressure of the yoke against the photoreceptor belt and signals the controller which in turn actuates the stepper motor to bring the tension on the belt to a predetermined set amount. The closed loop control system also increases tension on the photoreceptor belt to improve drive capacity if friction between the photoreceptor belt and a drive roll decreases during operation as sensed by a decrease in driver motor torque.

REFERENCES:
patent: 4866429 (1989-09-01), Granere
patent: 5225877 (1993-07-01), Wong
patent: 5479241 (1995-12-01), Hou et al.
patent: 5708924 (1998-01-01), Shogren et al.
patent: 5717984 (1998-02-01), Wong

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