Electrophotography – Internal machine environment – Particle or contaminant control
Reexamination Certificate
2007-07-13
2010-08-03
Porta, David P (Department: 2884)
Electrophotography
Internal machine environment
Particle or contaminant control
C399S098000, C399S284000
Reexamination Certificate
active
07769316
ABSTRACT:
A developing unit for developing a latent image formed on an image carrier includes a developer carrier, a developer regulator, and a sealing member. The developer carrier bears a developer, and is disposed facing the image carrier at a first position. The developer regulator regulates an amount of the developer, and is disposed facing the developer carrier at a second position upstream of the developer carrier in a moving direction thereof relative to the first position. The sealing member comes into contact with the image carrier at a third position upstream of the image carrier in a moving direction thereof relative to the first position. Therefore, gas is prevented from flowing from an outside area of the developing unit into an area defined by the second position to the third position.
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U.S. Appl. No. 12/188,549, filed Aug. 8, 2008, Hori, et al.
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Porta David P
Ricoh Co. Ltd.
Schmitt Benjamin
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