| 摘要 |
PROBLEM TO BE SOLVED: To restrict a change in gap between a latent-image carrier and a developer carrier even in case an external force from a drive input part into a developing unit act and to prevent image-quality defect such as density irregularity by composing so as to restrict the swinging motion of the development unit which accompanies the external force acting on the drive input part. SOLUTION: The device is equipped with a latent-image positioning member 3 for positioning and fixing a latent-image unit 1 in relation to a device main body, a development positioning member 4 for positioning and engaging the developing unit 2 in relation to the latent-image unit 1 so that it is free to be swinguable, and a drive input member 5 for transmitting a driving force from a drive source 6 to a member to be driven. The drive input member 5 functions to take in the driving force from the drive source 6 and to transmit it the member to be driven which incorporates the developer carrier 2a. At the time, because the drive input member 5 is provided on a swing shaft that is shared with the development positioning member 4 of the developing unit 2, the developing unit 2 does not swing around the swing shaft even in case an external force acts on the drive input member 5. |
