Movable blade not impairing durability of stationary blade, paper sheet cutting device with movable blade, and printer with paper sheet cutting device
AssigneeNEC Infrontia Corporation
InventorsShou Yazawa, Yukio Yoshioka
Life of this patent
Estimating the term…
Abstract
Provided is a movable blade including, at a part including a movable blade leading edge which engages with a stationary blade, a blade edge portion which is thinned toward the movable blade leading edge. The blade edge portion is formed by shaving.
Claims10
A movable blade, which is applicable to a sheet cutting device for cutting a printed sheet, the sheet cutting device being mounted to a printer for performing printing on a sheet, the movable blade cutting the printed sheet through engagement with a stationary blade, the movable blade comprising
- 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;
- and
- 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 the width direction of the sheet, the pair of guide portions for guiding the engagement with the stationary blade at the time of cutting;
- wherein the blade edge portion is formed by shaving, and
- the pair of guide portions is subjected to the shaving as well in the same step as the blade edge portion.
(canceled)
A method of manufacturing a movable blade, which is applicable to a sheet cutting device for cutting a printed sheet, the sheet cutting device being mounted to a printer for performing printing on a sheet, the movable blade cutting 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 the width direction of the sheet, the pair of guide portions guiding the engagement with the stationary blade at the time of cutting,
- wherein the forming comprises forming the blade edge portion by shaving, and
- 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.
(canceled)
Dependencies are inferred from the claim text.