| 摘要 |
PURPOSE:To enable a gap between a dielectric belt and a recording head to be stably maintained, by supporting guide rollers for leading the dielectric belt movably only in the direction for enlarging said gap. CONSTITUTION:Gap forming means 9 consists of a pair of rollers of which taper parts are opposed to each other, support shaft 14 with one end 14a threaded, spring 13 wound around shaft 14 and pushing rollers 11, 12 to the direction separating from each other, and nut 17 screwed with threaded end 14a. Spring 10 enforcing guide roller 5 to approuch recording head 1 is fixed between shaft 5 and shorter shaft 6, tendency of shift enforced by spring 10 toward guide roller 5 is regulated by the presence of rollers 11, 12, and thus, gap g between head 1 and dielectric belt 4 is lift open. |
