Image forming apparatus with static elimination
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United States of America Patent
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Apr 29, 2014
Grant Date -
Jan 19, 2012
app pub date -
Apr 15, 2010
filing date -
Apr 23, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An image forming apparatus that prevents transfer defects such as the occurrence of white spots includes a photoreceptor drum, a transfer roller, a transfer bias application circuit that applies a transfer bias to the transfer roller, a static elimination needle that eliminates static of a recording paper, a static elimination bias application circuit that applies a static elimination bias to the static elimination needle, and a printer controller. The printer controller controls the static elimination bias application circuit so that a potential difference between the static elimination needle and the recording paper during the period from when a front end region of the recording paper passes by the static elimination needle until when a front end of the recording paper comes into contact with a conveyance guide becomes smaller than the potential difference during the period that the front end region of the recording paper passes by the static elimination needle.
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