An inkjet printer printhead utilizes a substrate, an orifice layer, and a directionally biased electrostrictive polymer ink actuator disposed between the orifice layer and the substrate to eject ink from the printhead. The electrostrictive polymer ink actuator has a passivation layer disposed on the...http://www.google.de/patents/US6640402?utm_source=gb-gplus-sharePatent US6640402 - Method of manufacturing an ink actuator
