Patent ID: 7513405

Claim:
A staple refill configured to be detachably attached to a stapler main body or a cartridge provided in a stapler main body, comprising: a storage portion for storing a sheet of connected staples wound in a roll, the sheet of connected staples having an interior surface facing a center of the roll and an outer surface opposite the interior surface; a discharge port for discharging the sheet of connected staples; and a delivery passage for delivering a leading end portion of the sheet of connected staples to the discharge port; wherein the delivery passage is defined by a lower guide surface; wherein the delivery passage is curved upward from said discharge port toward an inside portion of said storage portion and is configured to deliver the leading end portion of the sheet of connected staples to the discharge port; a backward movement preventing member projecting from the lower guide surface for preventing the backward movement of the sheet of connected staples toward a storage portion side, the backward movement preventing member configured to enable the interior surface of the sheet of connected staples to slide in one direction on the backward movement preventing member, the interior surface of the sheet of connected staples being a side facing the lower guide surface.