An apparatus for a liquid drop emitter, especially for use in an ink jet printhead, is disclosed. A chamber filled with a liquid, a nozzle and a thermo-mechanical actuator, extending into the chamber from at least one wall of the chamber is disclosed. A movable element of the thermo-mechanical actuator...http://www.google.de/patents/US7144099?utm_source=gb-gplus-sharePatent US7144099 - Liquid drop emitter with split thermo-mechanical actuator