Developing bias control device capable of properly...

Details Developing bias control device capable of properly... Developing bias control device capable of properly...

2009-02-25

2011-10-04

Gray, David (Department: 2852)

Electrophotography

Control of electrophotography process

Control of developing

Reexamination Certificate

active

08032042

ABSTRACT:
Upon receiving a request to control developing bias voltage, first and second square-wave signal output units output first and second square-wave signals, respectively. When a rising edge of the first square-wave signal coincides with a rising edge of the second square-wave signal, the rising edge of the second square-wave signal is advanced with respect to the rising edge of the first square-wave signal. When a falling edge of the first square-wave signal coincides with a falling edge of the second square-wave signal, the falling edge of the second square-wave signal is delayed with respect to the falling edge of the first square-wave signal. Subsequently, a voltage-controlling square-wave signal for controlling developing bias voltage is generated based on the first and second square-wave signals.

REFERENCES:
patent: 6999707 (2006-02-01), Okamura
patent: 2003066697 (2003-03-01), None

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