Patent ID: 9588483
Date: 2017-03-07
CPC Classifications: G03G

Claim:
1. An image forming apparatus comprising: a main casing; a photosensitive drum extending in an axial direction; an endless belt having a central portion, a first end and a second end in the axial direction; a retaining unit configured to detachably retain the photosensitive drum and being movable between an internal position within the main casing and an external position outside of the main casing, the retaining unit including: a moving member configured to move between a contact position and a separate position when the retaining unit retaining the photosensitive drum is in the internal position, the pressing member exerting upwardly the pressure on the photosensitive drum to bring the photosensitive drum into contact with the endless belt when the moving member is located in the contact position, the pressing member releasing the pressure on the photosensitive drum to separate from the endless belt when the moving member is located in the separate position, wherein the moving member has an upper surface on which the pressing member is provided, the moving member being positioned closer to the central portion in the axial direction than each of a portion of the first side wall and a portion of the second side wall is to the central portion in the axial direction.