Patent ID: 8114578
Filing Date: 2012-02-14
Classification: B41J,G03F

Abstract:
1. A method of manufacturing an inkjet printhead, the method comprising: forming a chamber layer, which includes an ink chamber formed in the chamber layer, on a substrate on which heaters and electrodes are formed; forming a sacrificial layer on the chamber layer to fill into the ink chamber; forming a nozzle material layer, formed of photosensitive epoxy, on the sacrificial layer and the chamber layer; forming a first exposure pattern in the nozzle material layer by performing a first exposure operation; forming a second exposure pattern in a non-exposed portion of the nozzle material layer by performing a second exposure operation in which UV energy having an amount less than the amount of UV energy used in the first exposure operation; and forming a nozzle layer, in which a nozzle and at least one groove surrounding the nozzle is formed, by developing the nozzle material layer.