Electrophotography – Internal machine environment – Particle or contaminant control
Reexamination Certificate
2011-03-29
2011-03-29
Porta, David P (Department: 2884)
Electrophotography
Internal machine environment
Particle or contaminant control
C399S115000, C399S173000
Reexamination Certificate
active
07917052
ABSTRACT:
A charging device has a stainless steel sheet electrode for charging an image bearing member, and a cleaner for cleaning the stainless steel sheet electrode. The stainless steel sheet electrode has a thickness within a range from 50 μm to 60 μm and comprises aligned triangular pins. Each of the triangular pins has a vertex angle within a range from 10 degrees to 30 degrees. The cleaner has two grinding members comprising abrasive grains having an average diameter within a range from 2 μm to 9 μm, and the two grinding members are in contact with, respectively, both main surfaces of the sheet electrode. The cleaner and the sheet electrode are moved relative to each other at a constant speed by a force equal to or less than 2N.
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patent: 5532798 (1996-07-01), Nakagami et al.
patent: 6580885 (2003-06-01), Walgrove, III et al.
patent: 7003243 (2006-02-01), Yamashita
patent: 2008/0268361 (2008-10-01), Kikuchi
patent: 2002-268342 (2002-09-01), None
patent: 2004-93962 (2004-03-01), None
Maeda Osamu
Takaya Shunichi
Buchanan & Ingersoll & Rooney PC
Eley Jessica L
Konica Minolta Business Technologies Inc.
Porta David P
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