METHOD FOR MANUFACTURING LIQUID EJECTION HEAD, LIQUID EJECTION HEAD AND PRINTING DEVICE

摘要

Disclosed is a method for manufacturing a liquid ejection head. The method comprises: forming a pressure-actuated component on a first surface of a base (1); forming a groove (5) by etching on a second surface of the base (1) opposite to the first surface; filling the groove (5) with a first photoresist to form a sacrificial layer (7), a surface of the sacrificial layer (7) being flush with the second surface of the base (1); forming an orifice plate on the second surface of the base (1) and on the surface of the sacrificial layer (7); and performing development processing on the sacrificial layer (7) by using a first developer solution so as to remove the sacrificial layer (7) thereby forming a pressure chamber (12). The method can solve the problems of existing liquid ejection heads requiring complex manufacturing process, and of using an adhesive thus reducing the printing quality. Further provided are a liquid ejection head and a printing device.