Toner for developing electrostatic images, and process for its p

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

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430110, 430111, 430137, G03G 9087

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active

055716539

ABSTRACT:
A toner for developing an electrostatic image comprises toner particles containing a binder resin, a colorant and a wax. The toner contains polymerizable vinyl monomer or a mixture of organic solvent and polymerizable vinyl monomer in an amount of not more than 1,000 ppm. The toner particles are those obtained by mixing a mixture containing, at least, one or plural kinds of polymerizable vinyl monomer, a styrene-diene copolymer comprised of styrene or a styrene derivative and butadiene or isoprene in a copolymerization weight ratio of from 95:5 to 65:35, the colorant, the wax and a polymerization initiator to prepare a polymerizable monomer composition; dispersing the polymerizable monomer composition in an aqueous medium to carry out granulation; and polymerizing the polymerizable vinyl monomer in the aqueous medium.

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patent: 5219697 (1993-06-01), Mori et al.
patent: 5272212 (1993-12-01), Kitahara
patent: 5406357 (1995-04-01), Nakahara et al.
Patent Abstracts, Japan, vol. 7, No. 30 (P-173) (1175) Feb. 1983; Database WPI, Section Ch, Week 9315, Derwent, Class G06, AN 93-122252.
Database WPI, Section Ch, Week 9015, Derwent, Class G05, AN 8-111467.

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