Patent ID: 7487590
Filing Date: 2009-02-10
Classification: B41J,Y10T

Abstract:
1. A method for manufacturing a monolithic ink-jet printhead, comprising: (a) preparing a substrate; (b) stacking a plurality of passivation layers on the substrate and forming a heater and a conductor connected to the heater between adjacent passivation layers of the plurality of passiviation layers; (c) forming a connection hole to penetrate the plurality of passivation layers; (d) forming a metal layer on the plurality of passivation layers and forming an upper ink chamber in communication with the connection hole on a bottom surface of the metal layer so as to be disposed above the heater, and forming a nozzle on an upper surface of the metal layer in communication with the upper ink chamber; (e) forming a lower ink chamber in the substrate, the lower ink chamber being in communication with the connection hole and disposed under the heater, the lower ink chamber, the connection hole and the upper ink chamber forming an ink chamber, the heater being within the ink chamber; (f) forming a manifold for supplying ink in a bottom surface of the substrate; and (g) forming an ink channel between the manifold and the lower ink chamber.