Patent ID: 8408531

Claim:
A recording medium post-processing apparatus comprising: a recording medium stacking unit on which recording media are stacked; a binding unit having a binding section and a reference member, the binding section is movable to the inside of a stacking area of the recording media stacked on the recording medium stacking unit, binds the recording media by use of stapleless binding means which binds the recording media in a thickness direction, and retracts to the outside of the stacking area of the recording media after binding the recording media, the binding section and the reference member are configured to move in the same direction as the binding unit; the reference member that is moved to the inside of the stacking area while maintaining separation from the recording media stacked on the recording medium stacking unit as the binding section is moved to the inside of the stacking area, and functions as a position reference used for aligning the recording media; and an alignment unit that aligns end portions of the recording media facing the reference member by moving the recording media to a position where the recording media come into contact with the reference member from a position where the recording media are separated from the reference member, before the binding section binds the recording media.