A cleaning mechanism has a slider moving together with a carriage and a suction cap provided on the slider to cap one of print heads mounted on the carriage to perform suction therefrom. A first contact portion and a second contact portion are provided in each of the carriage and the slider, and a third contact portion and a fourth contact portion are provided in the slider. In the case that the suction cap performs suction from a black head, when the carriage moves toward the cleaning mechanism side, the first contact portion and the third contact portion come into contact with each other to position the carriage and the slider in such a manner that the suction cap faces the black head. On the other hand, in the case that the suction cap performs suction from a color head, when the carriage moves toward the cleaning mechanism side, the second contact portion and the fourth contact portion come into contact with each other to position the carriage and the slider in such a manner that the suction cap faces the color head.