| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent lowering of a light emitting efficiency by preventing a temperature rise of a light emitting array even in a small device and to prevent a position shift due to the heat of the light emitting element array. SOLUTION: An air flow generating device 5 that generates an air flow by rotating around a rotation shaft 6 which is extended in the arrangement direction of a light emitting element array 4 from the surface to the innermost of drawing 1 to blow the air flow toward the light emitting element array 4 is provided to a portion in the vicinity of a solid writing device 2 that writes image information on a surface of a photosensitive drum 1 using the light emitting element array 4. As result of the above structure, the temperature of the light emitting element array 4 is not raised to a level that may cause a trouble of the light emitting element array 4.</p> |
