Magnetic carrier particles for electrophotographic developer

Details Magnetic carrier particles for electrophotographic developer Magnetic carrier particles for electrophotographic developer

1987-06-05

1988-12-13

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

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

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

428407, G03G 910

Patent

active

047910410

ABSTRACT:
A carrier for developer is disclosed, which comprises a core having an average particle size of from 50 to 200 .mu.m and comprising fine magnetic particles dispersed in a binder resin and a polymer overcoat having a critical surface tension of from 10 to 25 dyn/cm formed on the surface of the core. The carrier has improved chargeability, high resistance to surface soiling, and high mechanical strength.

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patent: 4374192 (1983-02-01), Mayer et al.
patent: 4732835 (1988-03-01), Katagama et al.

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