Image forming apparatus

An image forming apparatus comprising:

• a main body having a first opening;
• a drawer movable between an inner position where the drawer is located inside the main body and an outer position where the drawer is located outside the main body through the first opening;
• a first cartridge supported by the drawer, the first cartridge comprising a first photosensitive drum and a first wall with an internal space configured to discharge waste toner removed from the first photosensitive drum;
• a second cartridge supported by the drawer, the second cartridge comprising a second photosensitive drum and a second wall with an internal space configured to discharge waste toner removed from the second photosensitive drum;
• and
• a waste toner box comprising a box main body, a first protrusion protruding from the box main body, and a second protrusion protruding from the box main body, the first protrusion configured to be coupled with the first wall and the second protrusion configured to be coupled with the second wall, the waste toner box being movable between a first position where the first protrusion and the first wall are coupled and the second protrusion and the second wall are coupled, and a second position where the first protrusion and the first wall are decoupled and the second protrusion and the second wall are decoupled,
• wherein the drawer is movable from the inner position to the outer position when the waste toner box is disposed at the second position, and the drawer is not movable from the inner position to the outer position when the waste toner box is disposed at the first position.

An image forming apparatus comprising:

• a main body having a first opening;
• a first photosensitive drum;
• a second photosensitive drum, the first photosensitive drum and the second photosensitive drum movable between an inner position where the first photosensitive drum and the second photosensitive drum are located inside the main body and an outer position where the first photosensitive drum and the second photosensitive drum are located outside the main body through the first opening;
• a first wall with an internal space configured to discharge waste toner removed from the first photosensitive drum;
• a second wall with an internal space configured to discharge waste toner removed from the second photosensitive drum;
• and
• a waste toner box comprising a box main body, a first protrusion protruding from the box main body, and a second protrusion protruding from the box main body, the first protrusion configured to be coupled with the first wall and the second protrusion configured to be coupled with the second wall, the waste toner box being movable between a first position where the first protrusion and the first wall are coupled and the second protrusion and the second wall are coupled, and a second position where the first protrusion and the first wall are decoupled and the second protrusion and the second wall are decoupled,
• wherein the first photosensitive drum and the second photosensitive drum are movable from the inner position to the outer position when the waste toner box is disposed at the second position, and the first photosensitive drum and the second photosensitive drum are not movable from the inner position to the outer position when the waste toner box is disposed at the first position.