Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1993-04-13
1994-10-25
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
G03G 910
Patent
active
053588193
ABSTRACT:
The object of the invention is to provide a developer for electrophotography which may present stable charging properties and image density after a prolonged period of copying operations as well as have a long life. The object can be achieved by providing a developer for electrophotography, compounded of: a toner component; and a carrier component prepared from a ferrite powder mixture in total of 100 parts, consisting of 10 to 90 parts by weight of a ferrite powder having a specific surface range of 200 to 230 cm.sup.2 /g, and 10 to 90 parts by weight of a ferrite powder having a specific surface range of more than 230 to 300 cm.sup.2 /g.
REFERENCES:
patent: 4629673 (1986-12-01), Osawa et al.
patent: 5108862 (1992-04-01), Kishimoto et al.
Funayama Naotaka
Ishida Toshihisa
Tasaka Shigeaki
Tateishi Norio
Urata Yoshinori
Conlin David G.
Goodrow John
Neuner George W.
Sharp Kabushiki Kaishi
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