Electrophotography – Internal machine environment – Particle or contaminant control
Reexamination Certificate
2011-05-24
2011-05-24
Royer, William J (Department: 2852)
Electrophotography
Internal machine environment
Particle or contaminant control
Reexamination Certificate
active
07949281
ABSTRACT:
An image forming apparatus includes a charging roller that continuously rotates and uniformly charges a photoconductor for forming an electrostatic latent image thereon, a cleaning roller that contacts a peripheral surface of the charging roller and cleans the charging roller while being driven by rotation of the charging roller, wherein a peripheral surface of the cleaning roller is formed of a melamine resin foam, and a cleaning roller shifting unit that causes the cleaning roller to contact the charging roller for a predetermined time at predetermined intervals of image formation while movably holding the cleaning roller.
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U.S. Appl. No. 12/201,396, filed Aug. 29, 2008, Kosuge, et al.
Amemiya Ken
Hozumi Yoshiki
Muraishi Takaya
Ono Hiroshi
Sampe Atsushi
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
Royer William J
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