Carrier for electrophotography, two-component type developer, pr

Details Carrier for electrophotography, two-component type developer, pr Carrier for electrophotography, two-component type developer, pr

1990-10-31

1993-06-01

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

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

428407, 430120, 4301066, G03G 9113, G03G 1308

Patent

active

052158489

ABSTRACT:
1. A carrier for electrophotography comprises carrier core particles and a coating resin material. The surfaces of the carrier core particles are each coated with the coating resin material and the coating resin material comprises a resin and a quaternary ammonium salt represented by the following formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent an alkyl group, an aryl group or an aralkyl group and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different from each other; and A represents an organic anion, an isopolyacid ion or a heteropolyacid ion.

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Jadwin et al, Research Disclosure No. 140, pp. 6-8, Ind. Opportunities Ltd., Homewell, England, 1975.
Patent Abstracts of Japan, vol. 13, No. 157 (P-857)(3505), Apr. 17, 1989 and JP-63-31064.

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