| 摘要 |
<p>PROBLEM TO BE SOLVED: To eliminate insufficiency of quantity of light, by turning on a light source part with a maximum quantity of light when the quantity of light is insufficient although a point light source of the light source part is set maximum for every pixel at the time of a first half of a reciprocation to one main scan line and turning on the light source part with quantity corresponding to quantity-of-light data when the quantity is sufficient in the case where one main scan line is exposed in a reciprocatory way of two times of the first half and a second half. SOLUTION: When a photosensitive material 106 reaches a predetermined position of an exposure part, image signals are output from a controller 202 to a light source part 204. The light source part 204 is consequently moved by a stepping motor 226 along a guide shaft 218 (main scan). The image signals are divided to a first half and a second half of the reciprocation of the light source part 204. The same main scan line is scanned twice to record images. At this time, input image data signals are converted to quantity-of-light data, and the quantity data is compared with a maximum quantity of light of an LED chip 208R, 208G, 208B. When the quantity is insufficient although a point light source is set maximum for every pixel at the first half, the light source part is turned on with the maximum quantity of light. If the light amount is enough, the light source part is turned on with an amount corresponding to the light amount data.</p> |
