The present invention is directed toward an improved heater chip for an ink jet printer. The heater chip has a diamond-like-carbon coating that functions as the cavitation and passivation layers of the heating elements on the heater chip. To improve the efficiency of the heater chip, the diamond-like-carbon...http://www.google.de/patents/US6637866?utm_source=gb-gplus-sharePatent US6637866 - Energy efficient heater stack using DLC island
