Image forming apparatus

An image forming apparatus that forms a latent image on a recording medium in a state in which cartridges each including at least a developer containing part adapted to contain a toner developer for visualizing a latent image formed on a photosensitive drum, are removably mounted to a main body of the image forming apparatus, comprising:

• light emitting devices, which are provided in a rotation axis direction of the photosensitive drum, and which include multiple light emitting portions that illuminate in association with image information, for exposing the photosensitive drum;
• a light emitting device support member that supports the light emitting devices so that each of the light emitting devices takes an exposure position for exposing the photosensitive drum through the illumination of the multiple light emitting portions and a retracted position retracted from the exposure position;
• regulating members that regulate supply of the developer from the developer containing part in a packed state in which the cartridges are packed together with the main body;
• and
• a separating member, which is provided to each of the regulating members, for supporting, in the packed state, each of the light emitting devices at a separated position from the exposure position in a direction separating from the photosensitive drum, and for moving each of the light emitting devices from the separated position to the exposure position in association with a releasing operation of each of the regulating members.