Patent ID: 6299786
Filing Date: 2001-10-09
Classification: B41J,H04N

Abstract:
A method of manufacturing an ink jet printhead which includes:providing a substrate;depositing a plurality of sacrificial and permanent layers on the substrate and etching said layers to create an actuator on the substrate;depositing a further permanent layer on the substrate and etching said further permanent layer to form a plunger;depositing a further sacrificial layer about said plunger and depositing yet a further permanent layer on said further sacrificial layer to form a nozzle chamber defining portion;etching said yet further permanent layer to form a nozzle;etching said further sacrificial layer to free the plunger and to form the nozzle chamber with the plunger being arranged reciprocally within said nozzle chamber to be displaceable towards and away from the nozzle to effect ink ejection and nozzle chamber refill, respectively, and the actuator being arranged externally of said nozzle chamber to effect reciprocation of the plunger.