| 摘要 |
<p>PROBLEM TO BE SOLVED: To correct quantity-of-light irregularity by other method while keeping the irregularity of the respective chips of an LED head large. SOLUTION: The quantities of light of respective chips of an LED head 1 are measured and slits are provided between a laser beam source and a photosensitive member corresponding to the quantities of laser beam at every chips to adjust the quantity of laser beam to regulate the charge potential of the photosensitive member at every LED chips. By this constitution, even if an LED head large in the irregularity of the quantity of light is used, a uniform image can be obtained and the conventional chip selection of the LED head may not be performed.</p> |
