Patent ID: 8335458
Filing Date: 2012-12-18
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a first photosensitive member to be subjected to image formation by exposing to light said first photosensitive member at an exposure position to form a latent image and then by transferring a toner image, formed by developing the latent image with toner, onto a transfer material at a transfer position; a second photosensitive member to be subjected to image formation by exposing to light said second photosensitive member at an exposure position to form a latent image and then by transferring a toner image, formed by developing the latent image with toner, onto the transfer material at a transfer position; a first photosensitive member gear provided coaxially and integrally with said first photosensitive member; a second photosensitive member gear provided coaxially and integrally with said second photosensitive member; a driving source for rotationally driving said first photosensitive member and said second photosensitive member; and a branch gear, meshable with said first photosensitive member gear at a first mesh point and meshable with said second photosensitive member gear at a second mesh point, for transmitting a driving force from said driving source to said first photosensitive member gear and said second photosensitive member gear, wherein a sum of a time of movement of a portion of said branch gear located at the first mesh point to the second mesh point and a time of integer-time rotation of said branch gear is equal to a time of movement of the transfer material from the transfer position of said first photosensitive member to the transfer position of said second photosensitive member.