Electrophotography – Cleaning of imaging surface – Retractable cleaning arrangement
Reexamination Certificate
2011-03-01
2011-03-01
Porta, David P (Department: 2884)
Electrophotography
Cleaning of imaging surface
Retractable cleaning arrangement
C399S121000, C399S308000, C399S351000
Reexamination Certificate
active
07899381
ABSTRACT:
An image formation apparatus includes a roller member that contacts a developer retaining member at a position and is distanced from the developer retaining member at another position. A contact edge of a cleaning blade supported by a supporting member is in contact with the roller member. A first plane of the cleaning blade that is supported by the supporting member, or is opposite to a surface that is supported by the supporting member, and a second plane of the cleaning blade form the contact edge. An angle θ1formed by a virtual vertical plane and the second plane thereunder when the roller member is distanced from the developer retaining member is greater than zero degrees but not greater than ninety degrees.
REFERENCES:
patent: 6335098 (2002-01-01), Kutzner et al.
patent: 6449453 (2002-09-01), Motohashi
patent: 2002/0034405 (2002-03-01), Kayahara et al.
patent: 2001-166611 (2001-06-01), None
Chiba Satoshi
Ikuma Ken
DLA Piper (LLP) US
Porta David P
Schmitt Benjamin
Seiko Epson Corporation
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