An improved printing apparatus and tape-ribbon cartridge for use in a dry lettering printing process. The printing apparatus includes a printing station, a mechanism for generating a printing force at the printing station, a rotatable font element having a plurality of raised characters on its underside,...http://www.google.com.au/patents/US4402619?utm_source=gb-gplus-sharePatent US4402619 - Printing apparatus and printing cartridge therefor
