METHOD FOR FORMING THICK LAYER BY SCREEN PRINTING AND METHOD FOR FORMING PIEZOELECTRIC ACTUATOR OF INKJET HEAD

摘要

A method for forming thick layer by using a screen printing and a method for forming piezoelectric actuator of inkjet head are provided to uniformly control the forms formed on the piezoelectric film. A method for forming a thick layer by using a screen printing includes the steps of forming a guide groove with the predetermined depth on the surface for the thick film, and forming the thick film by coating inside of the guide groove with pasty material by screen printing. The guide groove has a planar shape same with the thick film. In the step of forming the thick film, after the material at a state of a paste is coated narrower than the width of the guide groove, the width of the material becomes the same width of the guide groove with being planarized.