Post-processing apparatus, image formation apparatus provided with the same, post-processing method, and image formation method

摘要

A post-processing apparatus includes a first sheet mount section to place sheets in the shape of a bunch, a second sheet mount section to place sheets in the shape of a bunch, a binding processing unit disposed to be able to shift to a first position to bind sheets placed in the first sheet mount section and a second position to bind sheets placed in the second sheet mount section, and a regulation device that does not position the sheets in the shape of a bunch in an area of the binding processing unit when the binding processing unit is not positioned in the second position.