Developing apparatus and imaging apparatus

Details Developing apparatus and imaging apparatus Developing apparatus and imaging apparatus

2006-12-06

2009-08-11

Lee, Susan S (Department: 2852)

Electrophotography

Control of electrophotography process

Control of developing

Reexamination Certificate

active

07574155

ABSTRACT:
The developing apparatus of the present invention is a developing apparatus that develops an electrostatic latent image using a two-component developer containing a toner and a carrier; wherein the developing apparatus has a developing roller that rotates with a developer adhering to the peripheral surface thereof in order to transfer the developer to an electrostatic latent image; a bias unit having a DC voltage applicator that applies a prescribed DC voltage to the developing roller and an AC voltage applicator that applies an AC voltage to the developing roller; a timer that measures the developing apparatus drive time; a measuring unit that measures the amount of developing performed by the developing apparatus; and a bias adjustor whereby the amplitude component of the AC voltage applied by the AC voltage applicator is lowered based on an increase in output of the timer and/or the measuring unit.

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