| 主权项 |
1. An image forming apparatus that forms an image on a recording medium in a state where a cartridge having a photosensitive drum is detachably mounted to a main body of said image forming apparatus, comprising:
a light emitting device unit having a light emitting device and a lens, the light emitting device having a plurality of light emitting elements provided in a longitudinal direction of the photosensitive drum for emitting in accordance with image information to expose the photosensitive drum in accordance with the image information, and the lens condensing light emitted from the light emitting elements for exposing the photosensitive drum; and a light emitting unit supporting member that supports the light emitting unit so that the light emitting unit that is movable between an exposing position and a retracted position, the exposing position being a position for exposing the photosensitive drum via the lens as the light emitting elements emit and that the retracted position being a position at which the light emitting unit is retracted from the exposing position, wherein the cartridge is capable of being inserted into or pulled out from the main body in the longitudinal direction of the photosensitive drum along the light emitting unit in the retracted position. |
