Patent ID: 6254793
Filing Date: 2001-07-03
Classification: B41J,B82Y,G06K,G11C,H04N

Abstract:
A method of manufacturing an ink jet printhead, the method comprising the steps of:(a) providing a silicon wafer having a circuitry wafer layer including an electrical circuitry layer for the operation of a thermal actuator on demand;(b) depositing a first sacrificial layer on top of the circuitry wafer layer and etching the first sacrificial layer to define cavities for subsequent layers;(c) depositing a Young's modulus layer to form a first layer of the thermal actuator and a paddle member that extends from the thermal actuator;(d) depositing a conductive heater material layer on the Young's modulus layer of the thermal actuator, the conductive heater material layer having a portion interconnected to the circuitry wafer layer;(e) depositing a second sacrificial layer and etching the second sacrificial layer in preparation for the construction of nozzle chamber walls;(f) depositing a nozzle wall material layer over the second sacrificial material layer to form the nozzle chamber walls and etching the nozzle wall material layer to define a port for the ejection of ink; and(g) etching away the sacrificial layers to release the paddle member and the thermal actuator, with the paddle member positioned in a nozzle chamber defined by the formed nozzle chamber walls.