| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent image irregularity at every main scanning to prevent lowering of image quality, in a case that one sub-scanning moving quantity is large such as a case that a plurality of lines are recorded by one main scanning, by controlling quantity of light on the basis of the cumulative error thereof. SOLUTION: The feed quantity of a photosensitive material is detected at every one scanning by a sensor to obtain the difference with the proper feed quantity of the photosensitive material and, since the quantities of light of a light source corresponding to the previous final line and succeeding head line between main scannings are controlled (corrected) on the basis of said difference, overlap and a gap are generated between main scannings and, even when there are overlap quantity and gap quantity, quantity of light can be accurately controlled.</p> |
