| 摘要 |
An image forming apparatus increases a primary-transfer pressure contact force at the times of primarily transferring black color to a first sheet and yellow and black colors to a second sheet or subsequent sheets in order to prevent misalignment of colors. The apparatus also decreases the primary-transfer pressure contact force at the times of primarily transferring yellow, magenta and cyan colors to the first sheet, and magenta and cyan colors to the second sheet or subsequent sheets in order to prevent central blurs of colors.
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