Developer carrier containing electrically conductive filler pres

Details Developer carrier containing electrically conductive filler pres Developer carrier containing electrically conductive filler pres

1988-02-23

1990-03-13

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118653, 29132, 430120, 355259, G03G 1506, G03G 1508, G03G 908

Patent

active

049086650

ABSTRACT:
A developer carrier is used in a dry-type image developing device employing a one-component developer in an electrophotographic copier or an electrostatic recording apparatus. The developer carrier has a resin coating layer including an electrically conductive filler dispersed therein which is made of a material having a volume resistivity of at most 100 .OMEGA.cm. With this arrangement, the range in which the resistance of the surface layer varies under the ambient condition of varying temperature and humidity is small, producing a copy of stable image quality free from a smeared or contaminated background.

REFERENCES:
patent: 4444864 (1984-04-01), Takahashi
patent: 4564285 (1986-01-01), Yasuda et al.
patent: 4696255 (1987-09-01), Yano et al.

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