| 摘要 |
Disclosed is a full color printer which comprises a optical writing head for writing a latent image onto a printing paper such as a silver salt-sensitive member. The optical writing head has an array of optical shutter elements each of which is made of PLZT. Red color light, green color light, and blue color light are sequentially projected to the light shutter element, and the drive voltage applied to the light shutter elements is changed synchronized with the color change. To prevent the generation of spike noise, the drive voltage is not changed suddenly, but is changed smoothly.
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