A machine for printing a postage stamp for application to a mail item includes a a thermal printer to print the stamp on a tape of thermally sensitive paper. The speed of feeding of the tape is controlled to be uniform to synchronize with the operation of the printer. The printer is non-secure and accounting...http://www.google.de/patents/US5408416?utm_source=gb-gplus-sharePatent US5408416 - Franking machine
