Image forming apparatus having a removable unit with a driving portion

An image forming apparatus comprising:

• a housing including a mounting unit;
• a removable unit that includes at least a photoconductor drum and that is mounted on and dismounted from the mounting unit as a result of being inserted into and being removed from the mounting unit in a direction along an axial direction of the photoconductor drum;
• and
• an exposure device that includes a light-emitting source disposed along the axial direction of the photoconductor drum and that is fixed to the mounting unit in a state in which the exposure device pivots about a pivot point, which is provided on a downstream side in an inserting direction of the removable unit, in directions in which the exposure device approaches and separates from the photoconductor drum of the removable unit, wherein
• the exposure device includes a driven portion at an end on an upstream side in the inserting direction of the removable unit, the driven portion being driven so as to move the exposure device in a direction in which the exposure device approaches the photoconductor drum, and
• the removable unit includes a driving portion at the end on the upstream side in the inserting direction of the removable unit, the driving portion contacting the driven portion of the exposure device and driving the driven portion so as to move the exposure device in the direction in which the exposure device approaches the photoconductor drum.