| 摘要 |
<p>An image forming apparatus having a configuration to select a full-color mode or a monochrome mode includes a first driving mechanism, a second driving mechanism, a transfer member, and a controller. The first driving mechanism includes color image carriers and a first driver driving the color image carrier in a first direction to form color toner images. The second driving mechanism includes a black image carrier and a second driver driving the black image carrier in the first direction to form a black toner image. The transfer member receives the color toner image and the black toner image. The controller synchronizes the first driving mechanism and the second driving mechanism after conducting an image forming operation with the full-color mode or the monochrome mode to conduct a phase aligning between the color image carriers and the black image carrier.
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