A method and apparatus are provided for adaptively controlling printer functions of a dot matrix printer in response to sensing the type of printer ink cartridge being used. An identifying resistive value is applied to surface of the cartridge and installed within the printer. The printer includes contacts...http://www.google.de/patents/US20030231915?utm_source=gb-gplus-sharePatent US20030231915 - Coded ribbon cartridge, decoder, and ribbon ink capacity indicator with LCD display
