An image forming apparatus includes a first carriage, a second carriage, an endless belt member, and a driving source. The first carriage further includes a recording head. The second carriage further includes one or more electrical components. The endless belt member is extended between a driving pulley and a driven pulley. The first carriage and the second carriage are connected to the endless belt member at diagonally opposed positions. The driving source rotates the driving pulley, moving the belt member to move the first carriage and the second carriages in opposite directions.