Patent ID: 8523039

Claim:
A stapler comprising: a driver support part that supports an actuating mechanism of a driver for driving a staple toward sheets of paper; a clincher support part that is arranged apart from the driver support part in an up/down direction, and to which a clincher for clinching the driven staple is fixed; a positioning member provided in a vicinity of the clincher support part; a first positioning element provided on the positioning member; and a second positioning element provided on the clincher support part, wherein the driver support part and the clincher support part are configured to be simultaneously movable in a right/left direction by substantially the same amount; wherein the driver is configured to carry out a stapling operation, after a clamping operation of clamping the sheets of paper between the driver support part and the clincher support part; wherein the first positioning element and the second positioning element are configured to engage with each other in cooperation with the clamping operation; wherein the positioning member is movable toward the clincher support part; and wherein the positioning member is configured to move toward the clincher support part in cooperation with the clamping operation, thereby to engage the first positioning element and the second positioning element with each other.