Image forming apparatus

An image forming apparatus comprising:

• a casing;
• a cartridge detachably attached to the casing;
• a first contact disposed in the casing;
• and
• a second contact disposed in the cartridge and configured to electrically connect the cartridge and the casing by contact with the first contact,
• wherein the casing includes a first side plate and a second side plate between which a space to accommodate the cartridge is formed,
• wherein the first side plate includes a first surface facing a first direction, which is a direction from the first side plate toward the second side plate, and a first protruding portion protruding in the first direction with respect to the first surface,
• wherein the cartridge includes a second surface facing an opposite direction opposite to the first direction and a second protruding portion protruding in the opposite direction with respect to the second surface, and is configured such that the first protruding portion faces the second surface and the second protruding portion faces the first surface in a state where the cartridge is attached to the casing,
• wherein the second contact is disposed inside an outer edge of the second surface when viewed in the first direction and is retracted in the first direction relative to the second surface,
• wherein the first contact is movable between a contact position, where the first contact is in contact with the second contact, and a separated position, where the first contact is separated from the second contact in the opposite direction, and
• wherein at the separated position, the first contact protrudes in the first direction relative to the first surface, and is retracted in the opposite direction relative to a maximum protruding position of the first protruding portion with respect to the first surface.