Image forming apparatus including movable drawer having guide surface for guiding attachment of process cartridge

An image forming apparatus comprising:

• a housing;
• a drawer configured to be drawn out of the housing toward one side in a first direction, the drawer having one end at the one side in the first direction;
• and
• a process cartridge attachable to the drawer, the process cartridge attached to the drawer being at an attachment position on the drawer, the process cartridge comprising:
• a photosensitive drum rotatable about a drum axis extending in a second direction;
• and
• a developing roller rotatable about a developing axis extending in the second direction, the developing roller being movable between a contacting position where the developing roller is in contact with the photosensitive drum and a separated position where the developing roller is separated from the photosensitive drum,
• wherein the drawer has:
• a first surface extending in the second direction, the first surface being positioned opposite the one end of the drawer in the first direction with respect to the process cartridge at the attachment position;
• and
• a second surface positioned at an end of the first surface in the second direction to protrude upward therefrom, and
• wherein, in a state where the process cartridge is at the attachment position on the drawer, the developing roller is at the separated position.