Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2007-09-28
2010-06-29
Goodrow, John L (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C399S267000
Reexamination Certificate
active
07745087
ABSTRACT:
An electrostatic image developer contains a toner and a carrier having a resin coating layer formed on the surface of a core material containing a ferrite component, wherein a ratio R1/R2is from 0.88 to 0.92 where R1is the resistance value (Ω) of the developer having a toner concentration of 2 mass % in a state formed into a magnetic brush, at an applied voltage of 104V/cm, and R2is the resistance value (Ω) of the developer having a toner concentration of 12 mass % in a state formed into a magnetic brush, at an applied voltage of 104V/cm.
REFERENCES:
patent: 2005/0214671 (2005-09-01), Mizutani et al.
patent: 2007/0172748 (2007-07-01), Inoue et al.
patent: A-07-077826 (1995-03-01), None
patent: A-2001-051453 (2001-02-01), None
patent: A-2006-011290 (2006-01-01), None
Iizuka Akihiro
Murakami Tsuyoshi
Tsurumi Yosuke
Fuji 'Xerox Co., Ltd.
Goodrow John L
Oliff & Berridg,e PLC
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