Filter for reducing the effect of noise in TC control

Details Filter for reducing the effect of noise in TC control Filter for reducing the effect of noise in TC control

1996-11-26

1998-11-17

Braun, Fred L.

Electrophotography

Control of electrophotography process

Control of developing

399 30, G03G 1508

Patent

active

058390227

ABSTRACT:
In an imaging machine including an imaging member, operating components including a toner dispense system including a source of toner material and a dispenser for transferring toner material from the source to a developer device to replenish the developer device with toner material, and a control to provide images on copy sheets, a smart sensor system including a sensor, a toner concentration reference, and a filter. The sensor provides signals representing the toner concentration and the filter interconnected to the sensor and to the toner concentration reference reduces error in the signals representing the toner concentration. A comparator responding to the toner concentration reference and the filter signals provides an error signal to the control system in turn providing a toner dispense signal.

REFERENCES:
patent: 4108545 (1978-08-01), Eckert et al.
patent: 4369733 (1983-01-01), Hirakura et al.
patent: 4980727 (1990-12-01), Stelter
patent: 5237370 (1993-08-01), Murai

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