Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2011-07-12
2011-07-12
Chapman, Mark A (Department: 1721)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S105000, C430S108600, C430S108700, C399S111000
Reexamination Certificate
active
07977022
ABSTRACT:
The invention provides a developer having at least a toner, an aeration ratio (AR) of the developer measured by a powder rheometer being in a range of about 5.0 to about 10.0. It is preferable that the developer further contains an external additive of silica particles having a small diameter. The invention further provides a process cartridge having at least: a photoreceptor; and a developing device that comprises plura developer storage portions and that makes visible a latent image formed on the photoreceptor by using the developer. The invention further provides an image forming apparatus having at least the process cartridge.
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Inoue Toyofumi
Ishizuka Daisuke
Takeda Tomohiro
Chapman Mark A
Fuji 'Xerox Co., Ltd.
Oliff & Berridg,e PLC
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