Developing apparatus, process cartridge, and image forming apparatus
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United States of America Patent
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Jul 14, 2015
Grant Date -
Feb 13, 2014
app pub date -
Apr 6, 2012
filing date -
Apr 18, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
When a stirring member that stirs developer in a developer containing portion rotates at high speed, toner flies and the detection accuracy of light transmission type toner remaining amount detection is degraded. A developing apparatus including a developer containing portion that contains developer, a stirring member that stirs the developer in the developer containing portion, and a partition member which is disposed to separate the developer containing portion from a space adjacent to the developer containing portion and which bends to block at least a part of a light path, which is formed in the space and used to detect an amount of the developer, when being pressed by the stirring member via the developer.
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