Patent ID: 6294101
Filing Date: 2001-09-25
Classification: B41J,B82Y,G06K,G11C,H04N

Abstract:
A method of manufacturing an ink jet printhead which includes:providing a substrate;depositing a first sacrificial layer on the substrate;depositing a first permanent layer on the first sacrificial layer;etching said first permanent layer to form a thermoelastic bend actuator;depositing a second sacrificial layer on the first permanent layer;depositing a second permanent layer of the second sacrificial layer;etching said second permanent layer, said first sacrificial layer and said second sacrificial layer to create an array of nozzles on the substrate and a nozzle chamber in communication with each nozzle;wherein the thermoplastic bend actuator is arranged in the nozzle chamber and is displaceable, when activated, toward a nozzle opening of the nozzle to effect ink ejection, andtreating at least one surface of the actuator so that a surface of the actuator facing a floor of the nozzle chamber is hydrophobic to facilitate the formation of an air bubble between the actuator and the floor,thereby forming said printhead.