Dry composite blended magnetic developer of resin encapsulated f

Details Dry composite blended magnetic developer of resin encapsulated f Dry composite blended magnetic developer of resin encapsulated f

1981-11-24

1983-11-08

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

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

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

430111, G03G 908

Patent

active

044143214

ABSTRACT:
Disclosed is a dry composite magnetic developer consisting essentially of a particulate shaped article of a composition comprising a binder resin medium and a powdery magnetic material dispersed in the binder resin medium, wherein said developer is formed by dry blending (A) a first particulate shaped article comprising a non-pulverizing agglomerate of cubic particles of magnetite having a number average particle size of 1 to 10 .mu.m as measured by an electron microscope with (B) a second particulate shaped article comprising magnetite particles having a particle size of 0.2 to 1 .mu.m at an (A)/(B) weight ratio of from 95/5 to 10/90, especially from 95/5 to 30/70.

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