A method and device for off-sorting documents of a specific type using a device capable of discriminating among different types of documents. A stack of documents are received in an input receptacle and transported, one at a time, past a document type discriminating unit to an output receptacle...http://www.google.de/patents/US5704491?utm_source=gb-gplus-sharePatent US5704491 - Method and apparatus for discriminating and counting documents
