| 摘要 |
A light-emitting-element array unit includes a plurality of light-emitting-element arrays in which a plurality of light-emitting elements that is controlled based on binary image data is arranged in a row. An image-data-transfer control unit divides image data corresponding to one line in a main scanning direction for each of the light-emitting-element arrays, and when transferring the image data divided to each of the light-emitting-element arrays, controls a transfer of the image data by repeating a process of alternately transferring even pixel data and odd pixel data in one cycle of the one line in the main scanning direction.
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