Monocomponent developing device

Details Monocomponent developing device Monocomponent developing device

1990-12-26

1991-10-22

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118653, 430903, G03G 1506

Patent

active

050600214

ABSTRACT:
A monocomponent developing device for use in the electrophotographic image forming apparatus, which comprises a developing roller rotatably supported so as to confront a rotatably supported photoreceptor, a toner supply means for supplying toner onto the developing roller, a regulating member held in contact with a surface of the developing roller and operable to triboelectrically charge the toner, supplied onto the surface of the photoreceptor, while regulating the amount of the toner, and a coating film formed on at least a portion of a surface of the regulating member which is held in contact with the developing roller. The coating film has the same polarity in triboelectric series as that of the toner and is abradable after repetition of developing with a surface of the regulating member consequently exposed.

REFERENCES:
patent: 4100884 (1978-06-01), Mochizuki et al.
patent: 4745429 (1988-05-01), Mukai et al.
patent: 4755847 (1988-07-01), Matsushiro et al.
patent: 4791882 (1988-12-01), Enoguchi et al.
patent: 4883017 (1989-11-01), Yuji et al.
patent: 4923777 (1990-05-01), Imai et al.
patent: 4987454 (1991-01-01), Natsuhara et al.
patent: 4990959 (1991-02-01), Yamamuro et al.

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