Charge rollers having improved layer structure and/or surface ch

Details Charge rollers having improved layer structure and/or surface ch Charge rollers having improved layer structure and/or surface ch

1994-04-15

1996-03-05

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

361225, G03F 1502

Patent

active

054972191

ABSTRACT:
An image forming apparatus including a charge roller for providing a charge to a photoconductive member. The charge roller includes a metallic core with a conductive elastic layer covering the metallic core and a surface layer covering the elastic layer. The conductive elastic layer is preferably formed of an epichlorohydrein rubber or a urethane rubber. In addition, the conductive elastic layer and surface layer preferably have thickness and roughness characteristics as discussed herein.

REFERENCES:
patent: 5272506 (1993-12-01), Goto et al.
patent: 5390007 (1995-02-01), Kugoh et al.

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