Stapler

A stapler comprising:

• a driving portion configured to drive a staple into a sheet bundle;
• a clinch portion configured to bend a leg portion of the staple driven into and penetrating the sheet bundle;
• a table link configured to support the clinch portion at a position facing the driving portion and move the clinch portion in a first direction in which the clinch portion is separated from and brought into contact with the driving portion;
• a motor configured to drive the driving portion;
• and
• a regulation portion configured to move in a second direction intersecting the first direction while abutting against the table link and regulate a movement of the clinch portion in a direction away from the driving portion, wherein
• the table link has one end side to which the clinch portion is attached, the other end side which is rotatably supported by a shaft, and an abutting portion against which the regulation portion abuts between the clinch portion and the shaft, and
• a position where the regulation portion abuts against the table link:
• changes in a direction toward the clinch portion as the clinch portion and the driving portion are separated from each other;
• and changes in a direction away from the clinch portion as the clinch portion and the driving portion approach each other.