Emulsion polymerization process for dry positive toner compositi

Details Emulsion polymerization process for dry positive toner compositi Emulsion polymerization process for dry positive toner compositi

1980-07-03

1981-11-10

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

430109, 430110, 430528, 260DIG20, 260 4254, G03G 910

Patent

active

042999030

ABSTRACT:
This invention relates to a process for the preparation of dry positively charged toner particles, and more spceifically a polymerization process for preparing dry positively charged toner resins, containing a charge control agent, or additive which has a dual function, as a wetting agent in the polymerization process, and as a charge control agent for the toner resin, whereby the charge control agent is firmly bonded (attached) to the toner resin and is uniformly dispersed in the resin, or emulsion polymerization of a monomer material, a pigment and a charge control additive. As a result of the polymerization there is formed a dry positively charged toner resin which has attached thereto the charge control agent.

REFERENCES:
patent: 3060020 (1962-10-01), Greig
patent: 3391082 (1968-07-01), Maclay
patent: 3669922 (1972-06-01), Bartsch
patent: 3775357 (1973-11-01), Nemeth
patent: 4019933 (1977-04-01), Tamai et al.
patent: 4077804 (1978-03-01), Vanzo
patent: 4148741 (1979-04-01), Bayley

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