| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor drive device that ensures accurate alignment of the axes of a drive shaft and rotational shaft and is effective in terms of cost and molding technology, and to provide an image forming apparatus using the rotor drive device. SOLUTION: The rotor drive device includes: a photoreceptor 10 in which a photoreceptor rotational shaft 30 is freely rotatably supported on an apparatus main body 1; a drive gear 33 via which a photoreceptor drive shaft 34 is freely rotatably supported on the apparatus main body 1; and a coupling 38 for connecting the photoreceptor rotational shaft 30 and the photoreceptor drive shaft 34. The rotor drive device rotates the photoreceptor 10. In the rotor drive device, both ends of the photoreceptor rotational shaft 30 and the end of the photoreceptor drive shaft 34, which is not connected to the photoreceptor rotational shaft 30, are supported via ball bearings 31, 32, and 36. The end of the photoreceptor drive shaft 34, which is connected to the photoreceptor rotational shaft 30, is positioned by the engagement of a positioning hole 30a made in the photoreceptor rotational shaft 30 and a projection 34a made on the photoreceptor drive shaft 34. COPYRIGHT: (C)2006,JPO&NCIPI |
