| 摘要 |
<p>PURPOSE:To suppress the variance of exposure to a photosensitive recording medium by finding and storing light quantity compensating information in each element and compensating the quantity of light at the time of recording on the basis of the light quantity compensating information. CONSTITUTION:The brightness value of each element is previously measured and the light quantity compensating information is found out in each element and stored in a memory 22. Any one or two of the voltage value, current value or time width of a driving signal of each element is compensated on the basis of the light quantity compensating information to compensate the exposed value of each element. Since the exposure to the photosensitive recording medium is made uniform conditions such as the variance of light emitting elements or light quantity controlling elements or the unevenness of the quantity of light can be relaxed.</p> |
