Process for producing toner through suspension polymerization

Details Process for producing toner through suspension polymerization Process for producing toner through suspension polymerization

1988-02-12

1989-03-28

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

430109, G03G 908

Patent

active

048163660

ABSTRACT:
A toner for developing electrostatic latent images is produced by a process comprising the steps of: (a) stirring at least water, hardly water-soluble inorganic fine powder and a specific compound thereby to prepare an aqueous dispersion medium; (b) adding a polymerizable monomer composition comprising at least a polymerizable monomer and a polymerization initiator to the aqueous dispersion medium; (c) forming particles of the polymerizable monomer composition in the aquoeus dispersion medium; (d) subjecting the particles of the polymerizable monomer composition to suspension polymerization, thereby to produce toner particles; and (e) removing the hardly water-soluble inorganic fine powder attached to the surfaces of the toner particles by an aqueous alkaline or acidic solution.

REFERENCES:
patent: 3959153 (1976-05-01), Sadamatsu
patent: 4609607 (1986-09-01), Takagi et al.
patent: 4702988 (1987-10-01), Fukumoto et al.

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