Image forming apparatus

An image forming apparatus configured to form an image on a recording material, comprising:

• an apparatus main body;
• a supported unit movable relative to the apparatus main body between an inside position inside the apparatus main body and an outside position outside the apparatus main body;
• an opening/closing member movable relative to the apparatus main body to a closed position and an open position retracted from the closed position, the opening/closing member being configured to block a movement path for the supported unit from the inside position to the outside position when the opening/closing member is at the closed position;
• and
• a transfer unit having a transfer roller,
• wherein in a case where the supported unit is at the outside position, the supported unit is supported by the transfer unit,
• wherein the supported unit comprises:
• a first unit movable relative to the apparatus main body to a first inside position inside the apparatus main body and a first outside position outside the apparatus main body, the first unit having a photosensitive member for bearing toner;
• and
• a second unit movable relative to the apparatus main body to a second inside position inside the apparatus main body and a second outside position outside the apparatus main body, the second unit having an intermediate transfer belt;
• wherein in a case where the first unit is at the first inside position and the second unit is at the second inside position, the intermediate transfer belt is positioned below the photosensitive member,
• wherein in a case where the first unit is at the first outside position, the first unit is supported by the second unit at the second outside position, and
• wherein in a case where the second unit is at the second outside position, the second unit is supported by the transfer unit, and the transfer unit is positioned below the intermediate transfer belt.