Image formation apparatus, an image formation process...

Details Image formation apparatus, an image formation process... Image formation apparatus, an image formation process...

2008-02-21

2010-06-08

Brase, Sandra L (Department: 2884)

Electrophotography

Control of electrophotography process

Of plural processes

C399S030000, C399S055000

Reexamination Certificate

active

07734203

ABSTRACT:
An image formation apparatus including a toner cartridge for holding toner, an image supporting unit, on which an electrostatic latent image corresponding to a toner image is formed, a toner development unit for developing the latent image into the toner image with the toner, a detecting unit for detecting toner concentration of the toner image, and a control unit for controlling an amount of toner adhering to the latent image by adjusting a development bias voltage based on an output of the detecting unit. If control by the control unit based on the detection output of the detecting unit is insufficient, and consumption of the toner is out of a predetermined normal range, the control is carried out by estimating one of toner consumption amount and toner recovery amount in a direction that departs from the predetermined normal range.

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patent: 2007/0071477 (2007-03-01), Tanaka
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