Electrophotography – Image formation – Charging
Reexamination Certificate
2006-09-26
2006-09-26
Chen, Sophia S. (Department: 2852)
Electrophotography
Image formation
Charging
C361S221000, C492S018000, C492S039000
Reexamination Certificate
active
07113727
ABSTRACT:
An image forming apparatus of the present invention includes a charging device including a charge roller formed with annular grooves at opposite end portions thereof and configured to charge an image carrier. Annular gap forming members each are fitted in the annular grooves for forming a gap between the charge roller and the image carrier. The gap forming members each have an area of 1.0×10−6m2to 3.0×10−6m2in a section containing the axis of the charge roller.
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Koike Toshio
Kosuge Akio
Narita Yutaka
Chen Sophia S.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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