Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1991-12-24
1993-09-21
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
4301066, G03G 910
Patent
active
052468097
ABSTRACT:
A magnetic carrier for a two-component type developing agent used for the electrophotography, comprising resin-magnetic spherical particles which are formed by the polymerization of a monomer in which a magnetic powder is dispersed and which have a glass transition temperature of higher than 100.degree. C., the surfaces of said resin-magnetic spherical particles being coated with a surface-treated coating layer. Therefore, the surface-treated coating layer on the surfaces of the carriers can be heat-treated at 100.degree. C. or higher. The carrier therefore is light in weight, flowable, and exhibits excellent durability, resistance against the heat and stable electric characteristics irrespective of the passage of time.
REFERENCES:
patent: 4965160 (1990-10-01), Nagatsuka et al.
patent: 5104761 (1992-04-01), Saha et al.
Funato Masatomi
Honda Koji
Kawano Nobuaki
Kawata Hideaki
Goodrow John
Mita Industrial Co. Ltd.
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