Developing device with corrected toner density sensing,...

Details Developing device with corrected toner density sensing,... Developing device with corrected toner density sensing,...

2006-02-27

2008-09-30

Lee, Susan S (Department: 2852)

Electrophotography

Control of electrophotography process

Control of developing

Reexamination Certificate

active

07430381

ABSTRACT:
The developing device according to the present invention includes a developing tank for containing two-component developer, a toner density sensor, and a toner cartridge. Further, the developing device according to the present invention includes a control section for inputting, to the toner density sensor, a control voltage (Vc) for correcting a sensor output. The control section sets the control voltage (Vc), by using a standard control voltage having been set so as to correspond to each of the stirring velocities, so that a sensor output (Vo) has a value within a range indicative of predetermined toner density. With the arrangement, it is possible to set the toner density sensor so that the toner density sensor operates in the most suitable manner so as to correspond to each of the stirring velocities, thereby realizing a developing device capable of detecting toner density with high accuracy.

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