Image forming apparatus with toner degradation suppression
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United States of America Patent
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Aug 12, 2014
Grant Date -
Mar 7, 2013
app pub date -
Aug 10, 2012
filing date -
Sep 1, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An image forming apparatus includes an image forming portion that forms an image on a first image bearing member, a transfer member that transfers the image on the first image bearing member to a second image bearing member, a power supply, a detecting portion that detects a voltage value and a current value, a velocity changing portion, an environment detecting portion, and a controller that determines a transfer voltage value in transferring an image based on a result detected at the detecting portion. An image can be formed at the plurality of velocities. The controller determines a transfer voltage value at a velocity other than the plurality of velocities based on a result detected at the detecting portion and a result detected at the environment detecting portion when the first image bearing member is operated at a predetermined velocity.
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