Image forming apparatus
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United States of America Patent
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Mar 17, 2015
Grant Date -
Aug 1, 2013
app pub date -
Dec 18, 2012
filing date -
Jan 31, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An image forming apparatus, comprising: a charge voltage application circuit configured to be connected to a plurality of chargers in a process cartridge and to apply a voltage to the plurality of chargers; a current detection unit configured to detect a current flowing through each of the plurality of chargers; and a controller. The controller judges that the process cartridge is not attached to the image forming apparatus when the current smaller than a first threshold is detected by the current detection unit in a state where the charge voltage application circuit generates a predetermined voltage.
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