| 摘要 |
PURPOSE:To prevent the generation of a defect image and to easily load/unload an image carrier to/from a device body by coupling a driving means with the image carrier by the forward operation of the driving means and releasing said coupling by the reverse operation of the driving means. CONSTITUTION:In order to load a drum 1 to the device body, a driving shaft 20 is engaged with both the engaging parts, i.e. an engaging collar part 112a and a hole 112b, of the drum 1 and a motor 100 is rotated in the forward direction to rotate the driving shaft 20. Since the drum 1 is stopped rotating by the pressing force of a pad 117, screws 111a, 111b are relatively clamped and a boss part 110 is fixed on a position where the part 110 is abutted upon the driving shaft 20. Consequently, the coaxial degree of both the boss part 110 and driving shaft 20 is guaranteed by the engagement of the collar part 112a with the hole 112b and the clamping of both the screws 111a, 111b, so that the generation of defective images is sharply reduced. In case of removing the drum 1 from the device body, the motor 100 is reversed to disengage the screws 111a, 111b from each other. |
