Microsuspension processes for toner compositions

Details Microsuspension processes for toner compositions Microsuspension processes for toner compositions

1992-07-29

1994-03-01

Rodee, Christopher

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

430111, 523322, 523335, 523339, G03G 9087

Patent

active

052906540

ABSTRACT:
A process for the preparation of toner compositions which comprises dissolving a polymer, and optionally a pigment in an organic solvent; dispersing the resulting solution in an aqueous media containing a surfactant, or mixture of surfactants; stirring the mixture with optional heating to remove the organic solvent thereby obtaining suspended particles of about 0.05 micron to about 2 microns in volume diameter; subsequently homogenizing the resulting suspension with an optional pigment in water and surfactant; followed by aggregating the mixture by heating thereby providing toner particles with an average particle volume diameter of from between about 3 to about 21 microns when said pigment is present.

REFERENCES:
patent: 4401806 (1983-08-01), Hagiwara et al.
patent: 4558108 (1985-12-01), Alexandru et al.
patent: 4668768 (1987-05-01), Mendiratta et al.
patent: 4797339 (1989-01-01), Maruyama et al.
patent: 4983488 (1991-01-01), Tan et al.
patent: 4996127 (1991-02-01), Hasegawa et al.
patent: 5164282 (1992-11-01), Mahabadi

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