Electrophotography – Image formation – Development
Reexamination Certificate
2011-04-05
2011-04-05
Chen, Sophia S (Department: 2852)
Electrophotography
Image formation
Development
C399S291000
Reexamination Certificate
active
07920812
ABSTRACT:
A development device provided with a first electrode layer and a second electrode layer, which are laminated so as to overlap one another in a normal direction with respect to the surface of the roller part of the toner bearing roller. A plurality of openings are provided in the second electrode layer, over the entire latent image bearable area of a photosensitive body in the orthogonal-to-movement direction. The toner on the surface of the roller part is caused to hop between a plurality of spots directly beneath the openings that respectively exist directly beneath the plurality of openings in the second electrode layer, and a plurality of spots between the openings that respectively exist between the plurality of openings in the second electrode layer, within the entire area of the first electrode layer which is uniformly formed in the roller circumferential direction.
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Ishii Yasuyuki
Kadota Ichiro
Kosugi Hideki
Nakagawa Yoshinori
Takahashi Tomoko
Chen Sophia S
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
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