In the bill handling apparatus 100, there are provided the bill validating unit 10 which judges whether the bill received from outside is valid or not, the stacker 1 which is detachable with the main unit 2 and receives the bill judged as valid by the bill validating unit 10, the bill feed unit 30 which...http://www.google.com/patents/US7255341?utm_source=gb-gplus-sharePatent US7255341 - Sheet handling apparatus
