<p>A sending roller (42) is caused to be in contact with the outer periphery of a roll staple (3) constituted of a large number of straight needles connected in a belt-like shape and made in a roll-like shape. A sending roller (24) is rotated by a drive motor, and the roll staple (3) is rotated in the unwinding direction. This causes the head end of the roll staple (3) is guided and supplied to a staple supply passage (100).</p>
