Image forming method and image forming apparatus using specific

Details Image forming method and image forming apparatus using specific Image forming method and image forming apparatus using specific

1998-06-18

2000-10-24

Beatty, Robert

Electrophotography

Image formation

Development

430110, 430111, G03G 1508

Patent

active

061379778

ABSTRACT:
In the image forming machine of the invention, a two-component type developer has a spherical magnetic powder dispersion type carrier, which has a weight average particle diameter of from 15 to 60 .mu.m. The external additive is present in the form of particles on the toner particle, and comprises inorganic oxide fine particles A having a shape factor SF-1 of from 100 to 130, and non-spherical inorganic oxide fine particles B, having a shape factor SF-1 larger than 150 and particles B having been obtained by combining a plurality of component particles.

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