Patent ID: 8045883

Claim:
An image forming apparatus comprising: a casing that includes a pair of main-body side plates; a shaft that extends in an axial direction and is sandwiched between the pair of main-body side plates; a pair of pressing members that is provided in one-to-one correspondence on the pair of main-body side plates; and a photosensitive-member unit configured to move in a moving direction orthogonal to the axial direction, the photosensitive-member unit including: a plurality of photosensitive members that is arranged in the moving direction, each photosensitive member having two ends in the axial direction; and a pair of side plates that face each other in the axial direction, each side plate having a front end and a rear end in the moving direction, the front end being formed of a notched portion which contacts the shaft, each side plate including a positioning portion that protrudes from the rear end and contacts one of the pressing members.