Electrographic developing material and developing method employi

Details Electrographic developing material and developing method employi Electrographic developing material and developing method employi

1980-03-26

1981-11-17

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

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

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

430110, 430108, G03G 914

Patent

active

043012280

ABSTRACT:
A developing material for use in electrography which includes electrically insulative toner particles mainly composed of coloring material, dye and thermoplastic resin, carrier particles arranged to be triboelectrically charged to the polarity opposite to that of the electrically insulative toner particles through frictional contact with the electrically insulative toner particles, and electrically insulative fine particles composed of metallic oxide. The electrically insulative fine particles are arranged to be triboelectrically charged to the polarity opposite to the charged polarity of the electrically insulative toner particles through frictional contact with the electrically insulative toner particles and not to be triboelectrically charged even upon their frictional contact with the carrier particles.

REFERENCES:
patent: 3262806 (1966-07-01), Gourge
patent: 3392139 (1968-07-01), Durgman
patent: 3720617 (1973-03-01), Chatterji et al.
patent: 3819367 (1974-06-01), Chatterji et al.
patent: 4039463 (1977-08-01), DeRoo

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