Electrophotography – Internal machine environment – Particle or contaminant control
Reexamination Certificate
2007-12-14
2010-02-23
Lee, Susan S (Department: 2852)
Electrophotography
Internal machine environment
Particle or contaminant control
C399S302000
Reexamination Certificate
active
07668479
ABSTRACT:
An image forming apparatus includes: a primary transfer section which executes a first transfer by superimposing respective color toner images formed on a plurality of photoreceptors onto an intermediate transfer member; a secondary transfer section including a transfer roller, which concurrently transfers a plurality of toner images superimposed and formed on the intermediate transfer member onto a sheet conveyed from a sheet feed tray, which is in contact with the intermediate transfer member, and a high voltage power source which applies voltage to the transfer roller; and a controller which judges whether there is residual toner, which is a toner image formed onto the intermediate transfer member but not transferred onto the sheet when a sheet sensor detects the sheet exhaustion, and executes a cleaning mode in which the transfer roller is cleaned when there is the residual toner.
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patent: 7376365 (2008-05-01), Stahuber
patent: 7593676 (2009-09-01), Katoh
patent: 2006/0127124 (2006-06-01), Ota
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patent: 2002-323839 (2002-11-01), None
Cantor & Colburn LLP
Konica Minolta Business Technologies Inc.
Lee Susan S
LandOfFree
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