| 摘要 |
PURPOSE:To improve the quality of an image and moreover, to miniaturize a device and to enable the reduction in weight by providing a supporting means supporting a toner carrier and a carrying means for carrying a recording medium. CONSTITUTION:The engagement of the flange gear 9C of a photosensitive drum with a driving gear 41 transmitting driving force to the flange gear 9C is constituted so as to deviate a line connecting the center of the rotation of the gear 9C from the center counterclockwise by a very small angle alpha. to a vertical line from the center of the rotation of the gear 9C. When an upper part opening/ closing cover 19 is rotated in the direction of the arrow (j) and opened in order to unload a process cartridge B from an image forming device, the gear 9C can not be caught on the gear 41, but smoothly disengaged. On the other hand, a drive transmitting direction F is upward but an overlapping part 33c is formed on a supporting part 33a, so that a drum rotary shaft 9f can not be disconnected from the drum supporting part 33a. |
