Stapling Apparatus， Image Forming Apparatus， Method of Stapling Sheet Bundle， and Non-Transitory Computer Readable Data Recording Medium Having Program Stored Thereon

A stapling apparatus includes a sheet insertion portion that receives insertion of a sheet bundle， a stapler that staples the sheet bundle， a drive apparatus that drives the stapler， and a controller that controls the drive apparatus. The controller has the drive apparatus driven with first electric power when the drive apparatus operates in an on-line stapling mode in which the sheet bundle ejected from an image forming apparatus is stapled and has the drive apparatus driven with second electric power lower than maximum electric power that can be set as first electric power when the drive apparatus operates in a manual stapling mode in which the sheet bundle inserted through the sheet insertion portion is stapled.