Cleaning device, image forming apparatus, and process cartridge

Details Cleaning device, image forming apparatus, and process cartridge Cleaning device, image forming apparatus, and process cartridge

2008-02-13

2011-10-18

Porta, David (Department: 2884)

Electrophotography

Cleaning of imaging surface

Fibrous brush

C399S343000, C399S353000

Reexamination Certificate

active

08041281

ABSTRACT:
A cleaning device removes residual toner particles from a cleaning target, such as a photoconductor, which has a moving surface. The cleaning device includes a cleaning brush, a power circuit, and a cleaning member. The cleaning brush includes a brush rotation shaft, and the power circuit applies a first voltage of a first polarity to the brush rotation shaft. The cleaning member applies a second voltage of the first polarity to the cleaning brush. If the first polarity is negative, the cleaning member electrostatically removes toner particles having a positive polarity from the cleaning target. Then, the cleaning brush is triboelectrically charged to a second polarity, which is opposite to the first polarity, by contacting the cleaning target. Accordingly, the cleaning brush also removes residual toner particles having a negative polarity. Thus, the cleaning device removes both positively and negatively charged toner particles to clean the cleaning target.

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