Patent ID: 7552533
Filing Date: 2009-06-30
Classification: B41J,Y10T

Abstract:
1. A method of manufacturing a fluid ejector head comprising: defining side walls of at least one fluid ejection chamber about at least one fluid drop generator disposed over a substrate; creating at least one bore over said at least one fluid ejection chamber, said at least one bore having a first nozzle surface proximate to said at least one fluid ejection chamber and a second nozzle surface distal to said at least one fluid ejection chamber; and sputter depositing an initial deposit of a protective layer material at a low substrate bias voltage through said at least one bore; and redistributing a portion of said initial deposit of the protective layer material on said side walls at a high substrate bias voltage, wherein an inorganic protective layer is formed on said side walls of said at least one fluid ejection chamber and on a portion of said first nozzle surface.