Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1996-12-12
1997-12-02
Rodee, Christopher D.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430110, 430111, 430126, G03G 908
Patent
active
056934440
ABSTRACT:
An electrostatic-image developer which comprises a toner and a carrier comprising core particles coated with a coating resin, wherein the toner comprises toner particles having a volume-average particle diameter of from 3 to 9 .mu.m and having a specific particle diameter distribution, at least 20% of the total surface area of the toner particles is covered with (a) an external additive having an average particle diameter of from 20 nm to 100 nm, and at least 40% of the total surface area of the toner particles is covered with (b) an external additive having an average particle diameter of from 7 nm to 20 nm, and wherein the core particles of the carrier are magnetic particles formed from a composition comprising 100 parts by weight of a ferrite component represented by the following formula (3):
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patent: 4485162 (1984-11-01), Imamura et al.
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patent: 5164774 (1992-11-01), Tomita et al.
patent: 5296324 (1994-03-01), Akagi et al.
patent: 5342721 (1994-08-01), Akamatsu
Ichimura Masanori
Iizuka Akihiro
Ishigaki Satoru
Takagi Masahiro
Fuji 'Xerox Co., Ltd.
Rodee Christopher D.
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