Image forming apparatus
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United States of America Patent
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Jul 14, 2015
Grant Date -
Nov 28, 2013
app pub date -
May 20, 2013
filing date -
May 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A high-voltage power source can change a set value of a current to be supplied to an electroconductive brush from a first set current that has been set when the image formation has been started, to a second set current smaller than the first set current, at a previously set timing after the image formation for a recording material has been started. An absolute value of a potential difference between potentials of a photosensitive drum and an intermediate transfer belt, when a secondary transfer residual toner that has been charged by the electroconductive brush to which the second set current has been supplied is positioned in a primary transfer portion, is not larger than an absolute value of a potential difference which is shown when a toner image formed on the photosensitive drum is primarily transferred in the primary transfer portion.
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