Developing roller employing an elastic layer between conductive

Details Developing roller employing an elastic layer between conductive Developing roller employing an elastic layer between conductive

1996-09-18

1997-12-09

Lee, S.

Electrophotography

Image formation

Development

G03G 1508

Patent

active

056970277

ABSTRACT:
A developing roller (1) having a highly conductive shaft (2), an elastic layer (3) having conductivity around the shaft, and a conductive layer (4) on the elastic layer containing carbon black having an oil absorption of 30-80 ml/100 g and a specific surface area of 30-150 m.sup.2 /g. The developing roller carries a developer on its surface and comes in contact with or close to a photoconductor drum having an electrostatic latent image borne on its surface whereby the developer is supplied to the photoconductor drum to visualize the latent image. The developing roller has a low hardness, ensures intimate contact with the photoconductor drum, and is improved in electric conduction stability and anti-staining so that acceptable images can be consistently produced over a long term.

REFERENCES:
patent: 3863603 (1975-02-01), Buckley et al.
patent: 5248560 (1993-09-01), Baker et al.

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