Patent ID: 7413176

Claim:
A sheet finisher for stacking sheets conveyed from an image forming apparatus, to form a sheet bundle, and for binding the sheet bundle, the sheet finisher comprising: a sheet stacker for stacking the sheets conveyed from the image forming apparatus to form the sheet bundle; a first binder for binding the sheet bundle stacked on the sheet stacker with a staple; a second binder for binding the sheet bundle stacked on the sheet stacker with a binding tape; a stacker moving device for moving the sheet stacker to a position at which the first binder performs binding and to a position at which the second binder performs binding; a center-folding device for folding a center of a sheet conveyed from the image forming apparatus; a first conveyance device for conveying a sheet conveyed from the image forming apparatus to the sheet stacker without passing through the center-folding device; and a second conveyance device for conveying a sheet conveyed from the image forming apparatus to the sheet stacker through the center-folding device.