Patent ID: 7169539

Claim:
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 passivation layers; (c) forming a heat dissipating layer made of a metal on the plurality of passivation layers, forming a lower nozzle on the passivation layers, and forming an upper nozzle on the heat dissipating layer in a tapered shape in which a cross-sectional area thereof decreases gradually toward an exit to construct a nozzle plate including the passivation layers and the heat dissipating layer integrally with the substrate; and (d) etching the substrate to form an ink chamber to be supplied with ink, a manifold for supplying ink to the ink chamber, and an ink channel for connecting the ink chamber with the manifold.