Carrier core surface treatment

Details Carrier core surface treatment Carrier core surface treatment

1979-10-22

1981-05-05

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

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

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

430108, 430109, 430110, 430111, 430137, G03G 900

Patent

active

042659957

ABSTRACT:
An electrostatographic developer mixture comprising finely-divided, positively triboelectrically charging toner particles electrostatically clinging to negatively triboelectrically charging carrier particles. The carrier particles comprise a core particle treated with from between about 0.001 percent and about 1.0 percent by weight of at least one surface active additive selected from highly fluorinated materials having an ionic group selected from a cationic, anionic, nonionic, and amphoteric group. The developer mixture is especially useful for the development of negatively charged electrostatic latent images.

REFERENCES:
patent: 3778262 (1973-12-01), Queener et al.
patent: 3922381 (1975-11-01), Datta
patent: 4139483 (1979-02-01), Williams

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