Electrophotography – Image formation – Development
Reexamination Certificate
2006-08-29
2006-08-29
Gray, David M. (Department: 2852)
Electrophotography
Image formation
Development
C399S279000
Reexamination Certificate
active
07099613
ABSTRACT:
In a developing roller having a shaft member, a conductive elastic layer provided on the shaft member, and a conductive resin layer constituting a most-surface layer, the conductive resin layer contains a condensed polycyclic organic pigment as exemplified by at least one selected from the group consisting of a quinacridone pigment, a threne pigment, a perylene pigment and a perinone pigment. The developing roller can effectively keep ghosts from occurring and can achieve high image density in a low-temperature and low-humidity environment.
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Ishida Kazutoshi
Nakamura Minoru
Yamamoto Arihiro
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