Triboelectrically chargeable magnetic carrier particles having m

Details Triboelectrically chargeable magnetic carrier particles having m Triboelectrically chargeable magnetic carrier particles having m

1988-12-14

1990-03-06

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...

430108, 430122, G03G 910

Patent

active

049065475

ABSTRACT:
Magnetic carrier particles that can be positively charged triboelectrically and are suited for serving in magnetic brush toner-carrier development wherein said carrier particles comprise finely divided magnetically attractable powder dispersed in a resin binder which for at least 75% by weight consists of the acid-base reaction product of at least one acidic binder resin having an acid number in the range of 5 to 50 mg KOH/g, and at least one basic binder resin having free amin groups in an amount equivalent with 2 to 50 mg KOH/g and being present in an amount of at least 10% by weight with respect to such acidic resin.

REFERENCES:
patent: 4247597 (1981-01-01), Russell
patent: 4299898 (1981-11-01), Williams et al.
patent: 4629673 (1986-12-01), Osawa et al.
patent: 4774160 (1988-09-01), Mahabadi et al.

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