Image forming apparatus including a controller configured to regulate a potential difference between a photoconductor and a developing member
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United States of America Patent
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Mar 10, 2015
Grant Date -
Jun 6, 2013
app pub date -
Nov 15, 2012
filing date -
Dec 2, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An image forming apparatus includes a rotatable photoconductor, a charging unit, an exposure unit to expose the photoconductor to reduce an electrical potential at the photoconductor, a developing unit to charge the toner held on a toner bearing member with friction and attract the toner to the exposed portion on the photoconductor by supplying a development voltage from a first power source and using an electrical potential difference between the toner bearing member and the photoconductor in the development area, a reverse development voltage controller to supply a reverse development voltage while a non-charged portion on the photoconductor passes the development area, and a developer reducing potential applier to supply a development restraining potential and an absolute value smaller than a target charging potential to the photoconductor while the reverse development voltage is supplied.
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