Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2006-06-23
2009-10-13
Chapman, Mark A (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S108700, C430S111100
Reexamination Certificate
active
07601473
ABSTRACT:
The invention relates to a developer for developing electrostatic images. The developer includes magnetic carrier particles at a loading of from 60 to 99 weight percent of the developer. Toner particles are at a loading of 1 to 40 weight percent of the developer. The toner particles include a resin core particle having an outer surface and 0.05 to 5 weight percent a first metal oxide powder is substantially fixed to the outer surface. The toner particles further include 0.05 to 2 weight percent of a second metal oxide powder that is substantially free to transfer between outer surface of the toner particles and an outer surface of the magnetic carrier surface.
REFERENCES:
patent: 5066558 (1991-11-01), Hikake et al.
patent: 6087057 (2000-07-01), Hikata et al.
Alexandrovich Peter S.
Lofftus Kevin D.
Putnam David D.
Srinivsan Satyanarayan
Anderson Andrew J.
Chapman Mark A
Eastman Kodak Company
Ruoff Carl F.
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