Image forming apparatus having means to control condition of current supply to discharge wire and grid of charging member
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United States of America Patent
Stats
-
Aug 7, 2007
Grant Date -
Sep 15, 2005
app pub date -
Dec 21, 2004
filing date -
Dec 24, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An image forming apparatus is provided with an image bearing member, a charging member with a discharge wire and a grid, and a first current supply controlling member, which controls a current supply to the discharge wire. Also provided are a second current supply controlling member, which controls a current supply to the grid, a potential setting member, which sets a potential value on the image bearing member to be charged by the charging member, and a first current supply condition selecting member, which selects a current control condition of the first current supply controlling member or the second current supply controlling member according to the set potential. In addition, a second current supply condition selecting member selects a current control condition for the other current supply controlling member based on the determined current control condition.
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