| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize an inexpensive and wide exposure by improving the manufacturing efficiency of parts. SOLUTION: LED substrates (light emitting substrates) 20a, 20b, each mounting a plurality of LED chips including a plurality of LEDs(light emitting diodes) arrange in line and a plurality of driver ICs 22 for driving to light each LED 14, are provided such that all LEDs 14 are arranged at a constant interval (in the axial direction of the photosensitive body in an image forming system) while differentiating the position in the direction orthogonal to the arranging direction (rotational direction of the photosensitive body. The writing lines of respective LED substrates 20a, 20b (exposing line to the photosensitive body) are aligned by varying the lighting timing of each LED 14.</p> |
