A postage meter utilizing an offset printing roll. A die plate carried by the roll has a first region for receiving thereon fixed information such as the city and state, and a second region for receiving thereon variable information such as the date and postage amount. At the beginning of a revolution...http://www.google.com.au/patents/US4673303?utm_source=gb-gplus-sharePatent US4673303 - Offset ink jet postage printing
