Charging device configured to produce corona discharge
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United States of America Patent
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Feb 24, 2015
Issued Date -
N/A
app pub date -
Dec 23, 2013
filing date -
Dec 27, 2012
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Abstract
A charging device includes a discharging electrode, grid electrode, pair of shielding electrodes, frame, airflow-generating electrode, and impurity-removing member. The discharging electrode produces a corona discharge to charge a surface of photosensitive member. A first voltage is applied to the grid electrode. The discharging electrode is positioned between the shielding electrodes. The frame includes a pair of side walls confronting with each other in the moving direction. The discharging electrode and the pair of shielding electrodes are positioned between the side walls. The airflow-generating electrode is disposed at a position opposite to the discharging electrode with respect to the grid electrode. The airflow-generating electrode is applied with a second voltage lower than the first voltage. The impurity-removing member is provided on an inner surface of the frame. The impurity-removing member and the airflow-generating electrode are positioned on an identical side of the shielding electrodes in the moving direction.
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