Image forming apparatus having a moving mechanism to move a developing roller to a retracted position and a transmission mechanism to cut off transmission to the developing roller
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United States of America Patent
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May 23, 2017
Grant Date -
Apr 2, 2015
app pub date -
Sep 30, 2014
filing date -
Sep 30, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An image forming apparatus includes first and second photosensitive drums, first and second developing rollers configured to supply developers to the first and second photosensitive drums, respectively, an electric motor configured to generate a driving force to rotate the second developing roller, a moving mechanism configured to move the second developing roller between a development position and a retracted position, a transmission mechanism configured to transmit the driving force to the second developing roller, a drive mechanism configured to drive the moving mechanism and the transmission mechanism simultaneously, and a connecting mechanism configured to, when the second developing roller is in the development position, bring the transmission mechanism into a transmission state that allows transmission of the driving force to the second developing roller, and to, when the second developing roller is in the retracted position, bring the transmission mechanism into a cut-off state the cuts off the transmission.
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