Developing device and image forming apparatus using the same
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United States of America Patent
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Aug 28, 2001
Grant Date -
N/A
app pub date -
Aug 1, 2000
filing date -
Sep 30, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A control unit is configured in such a manner that at a transition from a developing state to a non-developing state both of DC and AC components of a development bias that are superimposed on each other are instantaneously interrupted after the duty factor of the portion of the AC component having the opposite polarity to the developer charging polarity is gradually increased.
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