DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
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United States of America Patent
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N/A
Issued Date -
Apr 25, 2013
app pub date -
Apr 23, 2012
filing date -
Oct 25, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A developing device includes a developer transport body having a rotating outer peripheral surface, a magnet member having a plurality of magnetic poles, a regulation member that regulates passage of the developer supplied on the outer peripheral surface, and an introduction member having an opposing face opposing the outer peripheral surface to form an introduction space. A regulation-assist magnetic pole, of the magnetic poles, is provided at a position shifted from a position opposing the regulation member toward an upstream side in a rotating direction of the developer transport body. At least an upstream end of the opposing face is located on a virtual line obtained by translating a tangent line to the developer transport body at a position opposing the regulation member to an end of the regulation member opposing the developer transport body or located closer to the outer peripheral surface than the virtual line.
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