An ink jet printer provided with an ink jet print head having a nozzle, an ink channel that is connected to the nozzle, and an electrostatic actuator that is composed of a diaphragm that is provided in a part of the ink channel and an electrode placed outside of the ink channel opposite to the diaphragm....http://www.google.ca/patents/US5563634?utm_source=gb-gplus-sharePatent US5563634 - Ink jet head drive apparatus and drive method, and a printer using these
