A tape printing apparatus includes a cutter unit that cuts a printed roll sheet (3A). The cutter unit includes a stationary blade (8A) and a movable blade (8B). A pair of resin spacing plates (110, 111) are fixed to a surface of a reverse face of the movable blade (8B) that slides over the stationary blade (8A). This configuration enables a cut end on a transfer direction downstream side of the cut roll sheet (3A) to slide over surfaces of the spacing plates (110, 111). Hence, even when an adhesive remains in the cut end, the cut end of the roll sheet (3A) can be forcibly released from the surface of the movable blade (8B). Further, since the spacing plates (110, 111) are simply fixed to the surface of the movable blade (8B), it does not blunt the movable blade (8B).