Electrophotography – Image formation – Charging
Reexamination Certificate
2007-01-05
2010-06-08
Gray, David M (Department: 2852)
Electrophotography
Image formation
Charging
Reexamination Certificate
active
07734221
ABSTRACT:
The present invention provides a conductive member10with a superior durability by controlling an electric resistance value of an electric resistance adjusting layer2within a semi conductive range, preventing an ion conductive material from bleeding out of the electric resistance adjusting layer2to avoid improper charging and avoiding strength decreasing of a weld portion of the electric resistance adjusting layer and an electric resistance value fluctuation. The electric resistance adjusting layer2is made from a resin composition prepared by melting and kneading a thermoplastic resin, a high molecular ion conductive material containing an alkali metal salt and a graft copolymer which has an affinity for both the thermoplastic resin and the high molecular ion conductive material.
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Furubayashi Hiroki
Hattori Tadaaki
Kojima Toshio
Nakamura Makoto
Narita Yutaka
Gray David M
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
Villaluna Erika
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