Patent ID: 7841086
Filing Date: 2010-11-30
Classification: B41J,B81B,Y10T

Abstract:
1. A method of fabricating an inkjet printhead, said method comprising the steps of: (a) forming a plurality of MEMS ink ejection assemblies on an ink-ejection surface of a substrate, each ink ejection assembly being sealed with roof material, said roof material spanning across the ink ejection assemblies to define a nozzle plate; (b) etching partially into said roof material to form simultaneously a respective nozzle rim for each ink ejection assembly and a plurality of projections patterned across said nozzle plate between nozzle rims; and (c) etching through said roof material to form a respective nozzle aperture for each ink ejection assembly, thereby forming said inkjet printhead having said projections patterned across said nozzle plate.