A cap device includes a first table provided so as not to be movable in a main scanning direction with respect to a base member; a first cap provided on the first table; a first guide member which has a first contact surface directed leftward and is provided on the first table; a second table provided so as to be movable in the main scanning direction with respect to the base member; a second cap provided on the second table; a second guide member which has a second contact surface directed leftward and is provided on the second table; a third guide member which has a third contact surface facing the first contact surface and is provided on a first ink head unit; and a fourth guide member which has a fourth contact surface facing the second contact surface and is provided on a second ink head unit. The first, second, third and fourth guide members are located such that when a carriage moves rightward, the second contact surface and the fourth contact surface contact each other and after this, the first contact surface and the third contact surface contact each other.