| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a photoreceptive drum from being damaged and stained at the jam processing time of a recording paper by providing a device with a clutch means transmitting power from a means driving the driving mechanisms of a color transfer roller and a black transfer roller to the driving mechanisms of the respective rollers so that it can be disconnected. SOLUTION: The shaft 56a of a driving gear 56 is extended in the width direction of a paper carrying belt 1 and an opposite-side driving gear 56 is fitted to the end part of the shaft 56a. The clutch 57 being as the clutch means is fitted to the intermediate part of the shaft 56a of the gear 56 and a reduction gear 58 is fitted to the clutch 57. Besides, the motor gear 59a of a driving motor 59 is meshed with the gear 58. By the clutch 57, the power of the motor 59 is transmitted to the shaft 56a of the gear 56 so that it can be disconnected. Thus, the rotation of the motor 59 is transmitted to the gear 56 and also transmitted to a first and a second crank mechanisms so as to control the driving of respective color transfer and black transfer roller fitting frames 32 and 52.</p> |
