Charging roll for electrophotography

Details Charging roll for electrophotography Charging roll for electrophotography

1995-08-21

1996-11-19

Brase, Sandra L.

Photocopying

Contact printing

Light boxes

361225, 430902, G03G 1502

Patent

active

055768067

ABSTRACT:
A charging roll fit for use at high speed, having good maintaining property of charging characteristics in long-term use, stable in electric resistance under the environmental conditions, and having no fear of pinhole leak and photoreceptor contamination, which comprises a conductive shaft and a conductive layer formed thereon, wherein said conductive layer contains a layer in which SnO.sub.2-x -coated BaSO.sub.4 particles having an electric resistance of 0.1 to 10 .OMEGA..multidot.cm are dispersed in a resin, and the value of x is 0 to 1.

REFERENCES:
patent: 5089851 (1992-02-01), Tanaka et al.
patent: 5148219 (1992-09-01), Kohyama
patent: 5384626 (1995-01-01), Kugoh et al.
patent: 5463450 (1995-10-01), Inoue et al.
patent: 5471285 (1995-11-01), Nagase et al.

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