| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a solid scanning type optical writing device which can maintain the emitted light quantity for each one of LEDs for a plurality of colors always uniform, and can form a stable image. <P>SOLUTION: A plurality of light shutter elements having an electro-optical effect are arranged in parallel with the main scanning direction. R, G and B beams being emitted in order from a light source comprising an LED group are modulated by the turning on/off of the light shutter elements, and an image is formed on a photosensitive material by this solid scanning type optical writing device. The light quantities of R, G and B which are emitted from the LED in order are detected by an SPC sensor 3, and the detected light quantities are inputted in a feedback amplifier 41 through an I/V converting amplifier 25 and an FB signal gain adjusting amplifier 26, and are fed back to a constant current circuit 22 after being compared with a control voltage. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
