Patent ID: 8770073

Claim:
A control method of a sheet punching apparatus having a conveyance unit, a punch, a movable member, a drive unit, a position detection unit, and a control unit, the method comprising: a conveyance step of conveying, with the conveyance unit, the sheet to a punching processing position at which the sheet is punched; a punch step of punching, with the punch, the conveyed sheet at the punching processing position; a drive step of reciprocating, with the drive unit, the movable member; a position detection step of detecting, with the position detection unit, whether or not the movable member is at a predetermined position; a stop control step of, with the control unit, in response to the position detection step detecting that the movable member reaches the predetermined position after movement of the movable member is started in said drive step, stopping an operation of the drive unit to thereby stop the movement of the movable member and determining a start timing of movement of the movable member for the next punching of the punch based on a position where the movable member is stopped, said start timing being earlier than a timing of the next sheet stopping at the punching processing position.