Movable blade not impairing durability of stationary blade, paper sheet cutting device with movable blade, and printer with paper sheet cutting device

A method of manufacturing a movable blade, which is mounted to a printer for performing printing on a sheet and which cuts the printed sheet through engagement with a stationary blade,

• the method comprising forming, at a part including a movable blade leading edge which engages with the stationary blade, a blade edge portion which is thinned toward the movable blade leading edge,
• wherein the movable blade further comprises a pair of guide portions protruded from the movable blade leading edge at both ends of the movable blade in the width direction, which corresponds to a width direction of the sheet, the pair of guide portions guiding the engagement with the stationary blade at the time of cutting,
• wherein the movable blade further comprises a sliding region which slides against the stationary blade, and a non-sliding region,
• wherein the forming comprises forming the blade edge portion by shaving,
• wherein the method further comprises:
• subjecting the pair of guide portions to the shaving as well in the same step as the blade edge portion, and
• forming a pair of cutout portions at both sides of the movable blade in the width direction across the sliding region and the non-sliding region, the pair of cutout portions being formed so that a depth of the cutout portions towards a center of the movable blade in a width direction of the movable blade is increased in a direction opposite to the movable blade leading edge, the forming the pair of cutout portions preceding the shaving.