An ink jet printer head including a pair of body plates bonded together; a recess portion formed on at least one of the body plates, the recess portion having a plurality of pressure chambers and a plurality of orifices respectively communicating with the pressure chambers; a pressure generating section...http://www.google.com.au/patents/US5428382?utm_source=gb-gplus-sharePatent US5428382 - Ink jet printer head and manufacturing method therefor
