Patent ID: 8118411

Claim:
A manufacturing method of an inkjet head having a head chip wherein channels and drive walls configured with piezoelectric elements are arranged alternately, apertures of the channels are arranged respectively at front side and rear side of the channels in which drive electrodes are formed, and a flow path regulating member are provided at the rear surface of the head chip to regulate ink flow into the channels, wherein shear deformation is caused at the drive walls by applying a voltage so as to emit ink in the channels, the manufacturing method comprising: providing a multilayer film to be adhered onto the rear surface of the head chip, wherein a mask layer is patterned on an organic film so that the mask layer not etched by dry etching corresponds to the channels where ink flow is to be regulated; and removing a portion of the organic film which is not covered by the mask layer by dry etching from the mask layer side so as to form the flow path regulation member; wherein the multilayer film is adhered onto the rear surface of the head chip after patterning the mask layer on a surface of the organic film.