Patent ID: 8216482
Filing Date: 2012-07-10
Classification: B41J

Abstract:
1. A method of manufacturing an inkjet printhead, comprising: forming a chamber layer above a substrate, the chamber layer having a plurality of ink chambers; forming a sacrificial layer in the chamber layer, the sacrificial layer configured to fill a space associated with the plurality of ink chambers of the chamber layer; forming a nozzle layer above the chamber layer and the sacrificial layer, the nozzle layer having a plurality of nozzles; preparing an etching mask having at least one linear etching pattern on a bottom surface of the substrate, the at least one linear etching pattern configured to define a portion of the substrate in which an ink feed hole is to be formed; etching the substrate through the linear etching pattern until the sacrificial layer is exposed and a through hole is formed, the through hole defining the portion of the substrate in which the ink feed hole is to be formed; and removing the sacrificial layer and the portion of the substrate surrounded by the through hole to form the ink feed hole, wherein the at least one linear etching pattern defines a non-closed loop, respective end portions of two neighboring linear etching patterns being spaced apart from each other by a gap.