Electrifying roller, roller electrifying apparatus using the sam

Details Electrifying roller, roller electrifying apparatus using the sam Electrifying roller, roller electrifying apparatus using the sam

1995-10-04

1997-02-11

Smith, Matthew S.

Electrophotography

Image formation

Charging

361225, 361230, G03G 1502

Patent

active

056026277

ABSTRACT:
There is provided by the present invention an electrifying roller having a roller layer having at least two layers of an elastic layer provided on a peripheral surface of core metal and a surface layer covering the elastic layer, wherein a slope (.DELTA.I/.DELTA.V) of the V-I characteristics of the roller layer is 1 or less, the electrifying roller is rotated in contact with the light-sensing drum, a voltage is loaded from a power supply unit to the core metal of the electrifying roller, and a surface of the light-sensing drum is electrified to a surface potential (Vs).

REFERENCES:
patent: 5253022 (1993-10-01), Takeuchi et al.
patent: 5272505 (1993-12-01), Shishido et al.
patent: 5287146 (1994-02-01), Uno et al.
patent: 5321471 (1994-06-01), Ito et al.
patent: 5497219 (1996-03-01), Kurokawa et al.

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