Electrophotography – Control of electrophotography process – Control of transfer
Reexamination Certificate
2007-02-09
2010-11-23
Gray, David M (Department: 2852)
Electrophotography
Control of electrophotography process
Control of transfer
Reexamination Certificate
active
07840148
ABSTRACT:
An image forming apparatus includes a secondary transfer roller that becomes a pressed state to make an intermediate transfer belt perform a transfer process and can move between the pressed state and a separated state, a press and separation driving device for driving the secondary transfer roller to become the pressed state and the separated state, a press and separation detecting device for detecting a pressed or separated state, and a voltage applying portion for applying a voltage between the intermediate transfer belt and the secondary transfer roller. The press and separation detecting device includes a resistor for detecting a current and a determination portion for determining a pressed or separated state in accordance with the detected current.
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Machine Translation of JP 2004-118019 A.
Japanese Office Action mailed on Feb. 17, 2009 directed at counterpart application 2006-045745; 8 pages.
Chinese Office Action, mailed Jul. 11, 2008, directed to counterpart Chinese Patent Application No. 200710084914.0; 10 pages.
Hirata Katsuyuki
Isono Tatsuya
Obara Mitsuru
Tanaka Masaki
Tsuboi Toshio
Curran Gregory H
Gray David M
Konica Minolta Business Technologies Inc.
Morrison & Foerster / LLP
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