Cleaning apparatus with take-up roller movable through a prescri

Details Cleaning apparatus with take-up roller movable through a prescri Cleaning apparatus with take-up roller movable through a prescri

1997-04-10

1998-12-08

Grimley, Arthur T.

Electrophotography

Cleaning of imaging surface

Web

152565, 1525651, 399 71, 399327, G03G 2100

Patent

active

058483411

ABSTRACT:
A cleaning device is disclosed having a web pressed against a fixing roller for cleaning, a wind-up roller taking up the web by its rotation, a motor rotating the wind-up roller, a counter accumulating the number of treatments by the fixing roller, and a control unit actuating the motor to rotate the wind-up roller by a prescribed angle whenever the number of the treatments reaches a prescribed value, and changing the value in accordance with the number of treatments accumulated by the counter. This device actuates the motor to rotate the wind-up roller taking up the web so that the prescribed value as the web feeding timing corresponding to one actuation of the motor may be increased in accordance with the cumulative number of treatments by the fixing roller. Owing to this control, the web can be fed out in a fixed amount by a simple construction even when the outside diameter of the wind-up roller with the web continues to increase.

REFERENCES:
patent: 4557588 (1985-12-01), Tomosada
patent: 5168314 (1992-12-01), Gunji et al.

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