Developing device
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United States of America Patent
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Dec 9, 2014
Issued Date -
N/A
app pub date -
Nov 22, 2013
filing date -
Nov 28, 2012
priority date (Note) -
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Abstract
An inclined angle that an upstream surface of each groove in an upstream developing sleeve forms with the surface of the upstream developing sleeve is set smaller than an inclined angle that an upstream surface of each groove in a downstream developing sleeve forms with the surface of the downstream developing sleeve. This configuration increases a difference in transfer power between the upstream and downstream developing sleeves, thereby enabling the upstream developing sleeve to transfer a developer to the downstream developing sleeve efficiently.
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