Patent ID: 6565762
Filing Date: 2003-05-20
Classification: B41J,G06K,G11C,H04N

Abstract:
A method of manufacturing an ink jet printhead which includes:providing a substrate having a doped layer; etching one side of said substrate to form a nozzle chamber; depositing a plurality of sacrificial and permanent layers on said one side of the substrate and etching said permanent layers to form a shutter, for opening and closing said nozzle chamber, and a thermally responsive device; back etching the substrate to the doped layer from an opposed side of the substrate and etching the doped layer to form a nozzle opening in communication with the nozzle chamber; and etching said sacrificial layers to release the shutter and the thermally responsive device and to clear the nozzle chamber such that, in use, the thermally responsive device is operable to act on said shutter to displace the shutter on demand into one of an open and closed position for controlling ink ejection from the nozzle opening.