A paper processing apparatus that includes: a paper carry-in port, which is disposed
at one side surface of the paper processing apparatus; a center-bound paper discharge
port, which is disposed at another side surface opposite from the paper carry-in
port; a center-binding compilation tray, which extends from an upper direction
of the one side surface to a lower direction of the other side surface, and aligns
and accommodates plural sheets of paper conveyed from the paper carry-in port;
a center-binding stapler, which binds a predetermined portion of the paper stack
that is accommodated and aligned; a folding knife, which folds the bound paper
stack; a rotary cutter unit, which is disposed vertically above the center-binding
compilation tray and cuts the folded paper using a horizontally moving blade.
