Patent ID: 7983600
Filing Date: 2011-07-19
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a single drive source; at least four photosensitive drums; a plurality of drum drive gears which are provided to correspond to the photosensitive drums; and a plurality of intermediate gears which are interposed between the drive source and each of the drum drive gears, wherein a number of the intermediate gears provided for each of the photosensitive drums is same; wherein each of the photosensitive drums is rotated through an exposure position at which after a surface of the photosensitive drum is charged, the surface of the photosensitive drum is exposed, so that an electrostatic latent image is formed thereon; and a transfer position at which after a developer image is formed on the surface of the photosensitive drum based on the electrostatic latent image, the developer image is transferred on to a member, and wherein, while the photosensitive drum rotates from the exposure position to the transfer position, each of the intermediate gears rotates one or more complete rotations.