Electrophotography – Image formation – Development
Reexamination Certificate
2009-04-13
2011-10-18
Tran, Hoan (Department: 2884)
Electrophotography
Image formation
Development
C399S266000
Reexamination Certificate
active
08041267
ABSTRACT:
A developing device includes a toner carrying member and an electric-field forming unit. The electric-field forming unit forms electric fields having different characteristics at a first area of the surface of the toner carrying member located within a developing area and a second area of the surface of the toner carrying member located out of the developing area such that a hopping height of toner at the first area is higher than that at the second area.
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Ishii Yasuyuki
Kadota Ichiro
Kosugi Hideki
Nakagawa Yoshinori
Takahashi Tomoko
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
Tran Hoan
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