Magnetic carrier for electrophotographic developing agent

Details Magnetic carrier for electrophotographic developing agent Magnetic carrier for electrophotographic developing agent

1995-09-27

1997-05-13

Rodee, Christopher D.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430108, 430125, G03G 9107

Patent

active

056291191

ABSTRACT:
A two-component binder-type magnetic carrier for developing agent comprising a magnetic powder and a binder resin. The carrier particles contain dispersed therein a release agent of the type of a metal soap and have abrasive or collapsible surfaces. By using the developing agent which contains this carrier, the magnetic powder peels off the carrier particle surfaces maintaining a controlled particle diameter and amount. Therefore, the carrier particles possess fresh surfaces at all times, whereby the occurrence of spent toner is effectively prevented and the charging amount of the toner is stably maintained.

REFERENCES:
patent: 4111823 (1978-09-01), Kobayashi et al.
patent: 5110703 (1992-05-01), Nagatsuka et al.
patent: 5494768 (1996-02-01), Boswell et al.
Database WPI, Week 9008, Derwent Publications Ltd., AN 90-053453.
Abstract of Japanese Laid-Open Patent Publ. No. 2-002579 (Jan. 8, 1990); Patent Abstracts of Japan, vol. 14, No. 136 (P-1021).

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