Magnetic toner

Details Magnetic toner Magnetic toner

1987-05-27

1989-04-11

Goodrow, John L.

Radiation imagery chemistry: process, composition, or product th

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

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

430903, G03G 914

Patent

active

048206032

ABSTRACT:
A magnetic toner comprises a binder resin and a magnetic iron oxide. The magnetic iron oxide has a silicon content of 0.1-1.5 wt. % based on the iron contained therein and is in the form fine particles containing the silicon preferentially in the inner part thereof. Because of these features, the magnetic iron oxide particles have a sharp particle size distribution, have uniform surface properties including those under various environmental conditions and freeness from agglomeration, have a good black hue, and are uniformly dispersed in the binder resin to provide a magnetic toner having uniform properties particularly suited for electrophotography.

REFERENCES:
patent: 4626487 (1986-12-01), Mitsuhashi et al.
patent: 4699865 (1987-10-01), Mitsuhashi

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