An ink jet print head suitable for high-density printing. The ink jet print head comprises a plurality of nozzles for ejecting an ink, ink chambers, for passage and pressurization of the ink, communicating with the nozzles, and pressurizing means for creating a change in volume of the ink in the ink...http://www.google.com.au/patents/US6280642?utm_source=gb-gplus-sharePatent US6280642 - Ink jet head and method of manufacturing same
