An image processing apparatus including a first guide configured in one of a first manner that the first guide is disposed on a first tray surface of a first tray and extends in a first direction perpendicular to a rotational axis of a second tray and parallel to the first tray surface, and a second manner that the first guide is disposed on a second tray surface of the second tray and extends in a second direction perpendicular to the rotational axis of the second tray and parallel to the second tray surface, and a second guide connected with the first guide, so as to move between a first position where the second guide faces the first tray surface in a direction perpendicular to the first tray surface and a second position where the second guide faces the second tray surface in a direction perpendicular to the second tray surface.