DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME
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United States of America Patent
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Issued Date -
Feb 4, 2021
app pub date -
Jul 8, 2020
filing date -
Jul 31, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A developing device includes a developer bearer, a developer regulator, a developer supply passage, and a stopper. The developer bearer includes a magnetic field generator and is configured to bear a developer containing toner and magnetic carriers and conveys the developer to a developing area by rotation. A stopper is configured to prevent the developer blocked by the developer regulator from moving to a surface of the developer bearer, while securing a supply path for passing the developer in the developer supply passage to the developer bearer between the stopper and an upper end of a side wall of the developer supply passage that is opposite to the developing bearer. A width of the supply path in a direction perpendicular to a direction of a rotation axis of the developer bearer is in a range of 7% or more and less than 10% of a circumference of an outer diameter of the developing bearer.
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