An image recording apparatus includes a rotational tray including a supporting surface for supporting a recording medium and a retaining mechanism. The rotational tray is attached to the housing to be rotatable so that an angle between the rotational tray and a side surface of the housing is changeable. The retaining mechanism is able to retain the rotational tray in one of: an open state in which a second discharging slot formed in the side surface of the housing is opened and the recording medium discharged from the second discharging slot is supportable by the supporting surface; a closed state in which the second discharging slot is closed by the supporting surface; and an intermediate state between the open state and the closed state, in which the recording medium discharged from the second discharging slot can be guided in a direction along the supporting surface.