To obtain a solid state scanning optical writing unit in which streak noise caused by the difference of driving frequency or the temperature characteristics of optical shutter elements can be eliminated in the sub-scanning direction and/or main scanning direction.
When optical shutter elements 23a-23e of PLZT juxtaposed in the main scanning direction are driven continuously in the sub-scanning direction with image data of substantially the same density, different voltages Vd3 and Vd4 are applied alternately to at least every one pixel in the sub- scanning direction. Even when the elements 23a-23e are driven continuously in the main scanning direction with image data of substantially the same density, the different voltages Vd3 and Vd4 may be applied alternately to at least every one pixel in the main scanning direction.
| JPS58114978 | LIQUID CRYSTAL OPTICAL PRINTER |
| JPH11263041 | EXPOSING APPARATUS AND PHOTOGRAPHIC PRINTER |
| JP3910317 | METHOD AND APPARATUS FOR RECORDING IMAGE |
SAITO ITARU
DOI ISAO
MASUDA TOMOHIKO
