Electrophotography – Image formation – Development
Reexamination Certificate
2005-02-15
2005-02-15
Grainger, Quana (Department: 2852)
Electrophotography
Image formation
Development
Reexamination Certificate
active
06856781
ABSTRACT:
An image forming apparatus including a photoconductor, and a developing unit having a developing sleeve for carrying a developer and a developer regulating plate for regulating the amount of the developer carried on the sleeve, wherein the developer is composed of a carrier and a toner, wherein that portion of the toner which has a particle diameter of 2.0-4.0 μm accounts for 30-70% of a total number thereof, and wherein the developer regulating plate is grounded so that when the developing sleeve is applied with a bias voltage, an electric field is formed between the developer regulating plate and the developing sleeve, whereby toner deposits on the developing sleeve are transferred to the developer regulating plate.
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Higuchi Hiroto
Iwamoto Yasuaki
Kondo Maiko
Matsuda Hiroaki
Nakai Hiroshi
Grainger Quana
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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