Patent application title: MEDIUM BINDING APPARATUS AND MEDIUM SORTING DEVICE

摘要

The present invention relates to a medium binding device which can bind a medium bundle more reliably. After a belt (20) is wound on a banknote bundle (Bp), the constant force is applied to tension the belt (20) wound on the banknote bundle (Bp) repeatedly in a direction reverse with the force application direction, so that, by being compared with the conventional mode, the force for tensioning the belt (20) is not increased, and the difference of the tensioning forces is reduced further, and accordingly, the banknote bundle (Bp) can be bound more reliably.