IMAGE FORMATION APPARATUS

To improve the image quality of overlapping parts of light emitting elements arranged in an overlapping manner.SOLUTION: An exposure head 106 includes a plurality of plane light emitting element array chips having a plurality of light emitting elements arranged in the linear shape for exposing a photoreceptor drum 102. The plurality of plane light emitting element array chips are arranged in the zigzag shape in the main-scanning direction so as to form overlapping parts 1-29 whose positions in the sub-scanning direction of partial plane light emitting elements arrayed on ends in the main-scanning direction of the two plane light emitting element array chips adjacent to each other in the sub-scanning direction overlap with each other. An image formation apparatus includes a chip data conversion unit 403 which distributes image data to the plane light emitting element array chips in accordance with the pixel position in the main-scanning direction of the photoreceptor drum 102. The chip data conversion unit 403 distributes the image data to any one of the adjacent plane light emitting element array chips for each plane light emitting element of the overlapping parts 1-29 in accordance with the instruction from a CPU 400.SELECTED DRAWING: Figure 6 【課題】重複して配列された発光素子の重複部の画質を向上させること。【解決手段】露光ヘッド１０６は、感光ドラム１０２を露光する直線状に配列された複数の発光素子を有する面発光素子アレイチップを複数、有し、複数の面発光素子アレイチップは、副走査方向に隣接する２つの面発光素子アレイチップの主走査方向の端部に配列された一部の面発光素子の副走査方向の位置が重複する重複部１〜２９を形成するように、主走査方向に千鳥状に配置され、画像データを感光ドラム１０２の主走査方向の画素位置に応じて、面発光素子アレイチップに振り分けるチップデータ変換部４０３を備え、チップデータ変換部４０３は、ＣＰＵ４００からの指示に応じて、重複部１〜２９の面発光素子毎に、画像データを隣接するどちらか一方の面発光素子アレイチップに振り分ける。【選択図】図６