| 摘要 |
PROBLEM TO BE SOLVED: To safely and surely attach/detach a drum unit heavy in weight into an image forming device to/from a fixed attaching position by integrally incorporating a photoreceptor drum including plural exposure optical systems and a driving system for the photoreceptor drum. SOLUTION: The plural exposure optical systems are fixed on a shaft and a rotary supporting shaft 30 freely rotatably supporting the photoreceptor drum 10 including the plural exposure optical systems is fixed/supported between front and rear integrated inside plates 40. A guide member 60 provided in the connecting part of both side plates 40 is insert-engaged with a rail member 50 provided in a device main body, to place the drum 10 in a nearly set position. Further, a supporting base plate 80 integrated to the front side plate 40 is regulated in a position, with respect to a front device base plate, to the fixed, so that the drum 10 can be accurately set in a fixed set position. |
