| 摘要 |
<p>PURPOSE:To prevent the occurrence of bias between the peripheral speed of a photo-sensitive drum and the feeding speed of a recording paper by using a system in which a registro roller is connected through a solenoid clutch to the photo-sensitive drum and these are driven by the same motor independently of the other drive system. CONSTITUTION:A photo-sensitive drum 1 is driven while varying its speed according to each practice of an electronic photographic process through a pulley 31 and a timing belt 32 attached to the shaft of the drum 1, and also a registo roller 13 is rotationally driven through a gear 54, an idle gear 56, and a clutch gear 55 attached to the shaft of the drum 1 when making a solenoid clutch 37 by means of an exclusive servo-motor M2. The other rollers, e.g., a cleaner 9's roller, a developing roller 2, a paper supply roller 14, a feeding belt 16, a fixing roller 17, a paper discharge roller 19, etc., for the printer are driven an another motor, e.g., an induction motor M1.</p> |
