| 摘要 |
<p>PROBLEM TO BE SOLVED: To form a color image with high finish quality on a recording medium. SOLUTION: Telecentric lenses 312R, 312G, 312B are provided, respectively, for R-LED chip 208R, G-LED chip 208G, B-LED chip 298B and arranged at a specified angle such that the lights from the R-LED chip 298R, G-LED chip 208G, B-LED chip 298B arranged in the latera,l direction of a photosensitive material 106 are focused at one point in the lateral direction. Consequently, the local length can be adjusted appropriately depending on the color of each LED chip 208 and when exposure is performed through main scanning of an exposure unit 300 along the direction shown by an arrow W, an image data for one pixel can be delivered simultaneously to the R-LED chip 298R, G-LED chip 208G, B-LED chip 208B and thereby an image can be formed efficiently through simple control.</p> |
