Patent ID: 8892001

Claim:
An image forming apparatus comprising: a main body; a drum unit comprising a photosensitive drum configured to rotate about an axis extending in an axial direction and carry a developer image; a developing unit which comprises a developing roller configured to supply developer to the photosensitive drum and being configured to be attached to and removed from the main body in the axial direction; an irradiating unit which comprises a light emitting member configured to irradiate the photosensitive drum and being configured to move between a retracted position and a proximate position which is closer to the photosensitive drum than the retracted position; a moving member extending in the axial direction and configured to move in the axial direction in response to attachment and removal of the developing unit to and from the main body; and an endless belt configured to face the photosensitive drum of the drum unit from above, wherein the drum unit is disposed below the endless belt, the irradiating unit is disposed below the photosensitive drum, and the moving member is disposed below the irradiating unit, wherein the moving member comprises a first acting portion and a second acting portion which are spaced from each other in the axial direction, wherein the irradiating unit comprises a first reacting portion and a second reacting portion which are spaced from each other in the axial direction, and wherein the first acting portion and the second acting portion are configured to act on the first reacting portion and the second reacting portion respectively, in response to attachment of the developing unit to the main body, such that the irradiating unit moves from the retracted position to the proximate position, and the first acting portion and the second acting portion are configured to cancel acts on the first reacting portion and the second reacting portion respectively, in response to removal of the developing unit from the main body, such that the irradiating unit moves from the proximate position to the retracted position.