Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2005-08-23
2005-08-23
RoDee, Christopher (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S125320, C430S126200, C430S137140
Reexamination Certificate
active
06933092
ABSTRACT:
A magenta toner for electrophotography includes a binder resin and a colorant, wherein the toner contains at least a naphthol pigment having a structure represented by the following general formula (1) as the colorant, and has a shape factor SF1 of 110 to 140 obtained by the equation below and a volume average particle size of 2 to 9 μm:wherein R represents the following group,and R′ represents a hydrogen atom, an alkyl group or a methoxy group;in-line-formulae description="In-line Formulae" end="lead"?SF1=R2/A×π/4×100in-line-formulae description="In-line Formulae" end="tail"?wherein R represents the maximum length of the toner and A represents the projected area of the toner.
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Fujii Takahisa
Inoue Toyofumi
Matsumura Yasuo
Yaguchi Hidekazu
Yoshida Satoshi
Fuji 'Xerox Co., Ltd.
RoDee Christopher
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