Sheet processing for stacking shifted sheet bundles

A sheet processing method comprising the steps of:

• stacking sheets received from an image forming apparatus on a first tray;
• jogging the sheets stacked on the first tray at a jogging position of a plurality of jogging positions;
• discharging the sheets stacked on the first tray;
• stacking the sheets discharged by the discharger on a second tray;
• binding the sheets stacked on the first tray with a movable binder;
• and
• controlling the movable binder to move to a position corresponding to the jogging position and controlling the movable binder to bind the sheets on the first tray.

A recording medium on which is stored machine readable code for performing a sheet processing method, the code performing the steps of:

• stacking sheets received from an image forming apparatus on a first tray;
• jogging the sheets stacked on the first tray at a jogging position of a plurality of jogging positions;
• discharging the sheets stacked on the first tray;
• stacking the sheets discharged by the discharger on a second tray;
• binding the sheets stacked on the first tray with a movable binder;
• and
• controlling the movable binder to move to a position corresponding to the jogging position and controlling the movable binder to bind the sheets on the first tray.