摘要 |
At a time for resetting a transfer voltage after a predetermined time period from the performance of ATVC in both a color mode and a monochrome mode, ATVC is performed only in a currently running mode. A transfer voltage in another mode that the ATVC has not been performed at that time is set based on results of the ATVC performed in both the color and monochrome modes and a result of the ATVC performed in the other mode at that time.
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