Electro-conductive roll and image-forming apparatus using...

Details Electro-conductive roll and image-forming apparatus using... Electro-conductive roll and image-forming apparatus using...

2006-07-04

2006-07-04

Chen, Sophia S. (Department: 2852)

Electrophotography

Image formation

Charging

C361S221000, C399S313000, C399S357000

Reexamination Certificate

active

07072604

ABSTRACT:
An electro-conductive roll is provided that makes contact with a body to be charged in a state in which a voltage is applied thereto, and charges the body to be charged, a surface of the electro-conductive roll satisfying the following conditions (a) and (b):(a) the surface of the electro-conductive roll has a 10-point average roughness of 5 μm or less; and(b) the surface of the electro-conductive roll has a dynamic ultra-microhardness in the range of 0.04 to 0.5.

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