PURPOSE: To prevent the occurrence of black/white streaks on a copied picture, by constituting the titled device in such a way that the lengthwise direction of the clearance section between transparent electrode groups installed in a matrix form does not coincide with the scanning direction but crosses the scanning direction at a prescribed angle.
CONSTITUTION: When a transparent slit pattern SP indicated by the non-hatched parts is formed as shown in the obliquely viewed diagram, only one electrode is isolated out of transparent electrodes 30-1W30-10 consisting a transparent electrode group 30 and the isolated electrode is moved from the 30-1 to 30-10. At the same time, correspondingly to the isolated electrode, transparent electrodes 31-1W31-11 consisting a transparent electrode group 31 corresponding to a part forming a slit pattern SP are synchronously isolated. When, for instance, the transparent electrode 30-5 is isolated, the transparent electrodes 31-6, 31-7, and 31-8 are simultaneously isolated. When this operation is made, a part of the slit pattern SP is formed. Therefore, by successively performing this operation to the transparent electrodes 30-1W30-10 and repeating the successive operations to the electrodes, a normal slit pattern SP is formed.
KASHIWAGI KAZUO
YANAGI MASAAKI
TODA TAKAO
ENDOU MAKOTO
ONO SATOSHI
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