Toner for developing electrostatic image

Details Toner for developing electrostatic image Toner for developing electrostatic image

1994-08-25

1995-04-18

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

430110, G03G 900, G03G 9087

Patent

active

054077761

ABSTRACT:
A toner for developing an electrostatic image has toner particles.
The toner particles are prepared by suspension polymerization and contain at least two components comprised of a high softening point resin-A and a low softening point material-B.
The toner particles each have a structure separated into a phase-A mainly composed of the resin-A and a phase-B mainly composed of the material-B. The phase-B is absent in the vicinity of the toner particle surface, ranging from its surface to a depth 0.15 time a toner particle diameter.
The toner particles contain an organic solvent, a polymerizable monomer or a mixture thereof in a quantity of not more than 1,000 ppm.

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patent: 5153092 (1992-10-01), Kao et al.
patent: 5300386 (1994-04-01), Kanbayashi et al.

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