Development device, process cartridge, and image forming apparatus
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United States of America Patent
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Jun 23, 2015
Grant Date -
Mar 27, 2014
app pub date -
Sep 24, 2013
filing date -
Sep 26, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A development device includes a developer storage chamber configured to store a developer, a developer carrying member configured to carry the developer, a light transmission member capable of transmitting detection light for detecting a remaining amount of a developer in the developer storage chamber, a shaft member which is provided to the developer storage chamber and configured to rotate, a conveyance unit which is provided to the shaft member and configured to convey the developer, and a cleaning unit which is provided to the shaft member and configured to rub and clean the light transmission member, wherein the shaft member includes an opening.
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