Developing compositions for electrophotography

Details Developing compositions for electrophotography Developing compositions for electrophotography

1992-10-28

1994-03-01

Rodee, Christopher

Radiation imagery chemistry: process, composition, or product th

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

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

430108, 430110, G03G 9107, G03G 910

Patent

active

052906523

ABSTRACT:
An object of the present invention to provide novel developing compositions for use in electrphotography which do not cause an adherence of ferrite carriers to the surface of a photoconductor while maintaining high definition and high picture quality of the picture image by using fine size ferrite carriers. The aforementioned developing compositions for use in elecrophotography comprise toners which contain a binding resin and colorant as main components, and ferrite carriers comprised of 5 to 40 mol % of ZnO and 60 to 95 mol % of Fe.sub.2 O.sub.3, and possess a saturated magnetization value of 70 to 100 emu/g in an applied magnetic field of 3000 oersted.

REFERENCES:
patent: 4282302 (1981-04-01), Makino et al.
patent: 4598034 (1986-07-01), Honjo et al.
patent: 4977054 (1990-12-01), Honjo et al.

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