A flow path regulating member for regulating an ink flow path leading into the channels is formed on the rear side of the head chip by exposure and development through lamination of the photo masks having an opening of a predetermined pattern, after a photosensitive resin film has been bonded on the rear side of the head chip by heat and pressure without using an adhesive; this head chip being characterized in that the channels, and drive walls made up of piezoelectric elements are arranged alternately, the apertures of the channels are arranged on the front side and rear side, respectively, and drive electrodes are formed in channels.