Patent ID: 7636531

Claim:
An image forming apparatus comprising: a body casing; a photosensitive member unit configured to be inserted into and withdrawn from the body casing, the photosensitive member unit configured to move between a first position where the photosensitive member unit is stored in the body casing, and a second position where the photosensitive member unit is withdrawn from the body casing, the photosensitive member unit configured to move between the second position and a third position where the photosensitive member unit is completely removed from the body casing, the photosensitive member unit configured to hold a plurality of photosensitive members; and a control member disposed in the body casing, the control member configured to move between a holding position in which the photosensitive member unit is allowed to move between the first position and the second position and is prevented from moving between the second position and the third position and a release position where the photosensitive member unit is allowed to move between the second position and the third position, wherein when the control member is placed in the release position, the photosensitive member unit is prevented from moving between the first position and the second position.