Image forming apparatus
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United States of America Patent
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Jul 16, 2019
Grant Date -
Oct 26, 2017
app pub date -
Mar 23, 2017
filing date -
Apr 22, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An image forming apparatus includes a control unit configured to execute a first mode and a second mode of forming images on first through third image bearing members. In the first mode, a toner image is formed on a third image bearing member without having toner images formed on the first and second image bearing members in a state where the first through third image bearing members are abutted against an intermediate transfer body. In the first mode, the control unit controls at least a first charging device such that a primary transfer contrast in a first primary transfer portion is set to be equal to or greater than a discharge starting voltage, and applies an AC voltage to a second charging device such that a discharge current having a current quantity smaller than that in the second mode is supplied.
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