| 摘要 |
PROBLEM TO BE SOLVED: To eliminate an image defect and a decrease in picture quality due to rotational unevenness and vibration of a photoreceptor drum by increasing the rigidity of a fitting part supporting the photoreceptor drum rotatably and to actualize both lower costs by a decrease in man-hour for assembly and smaller size. SOLUTION: A process cartridge has drum bearings 24 and a drum shaft 25 which rotatably support the photoreceptor drum 7 at both ends along the length, a drum frame body 19 which holds the photoreceptor drum 7, and side coves 22 and 23 which couples the drum frame body 19 (photoreceptor unit 21) and a developing device unit 20; and the drum bearings 24 and drum shaft 25 which rotatably support the photoreceptor drum 7 and put between the drum frame body 19 and side covers 22 and 23, which are fixed to the drum frame body 19 with screws 28, etc., to fix the drum bearings 24 and drum shaft 25 at the same time. |
