The present invention is intended to provide a method of manufacturing an
ink jet head having good stable-ejection characteristics, and an ink jet
head. The invention is an exemplary method of manufacturing an ink jet
head having a cavity that contains liquid and a nozzle that communicates
with the cavity, and ejecting the liquid contained in the cavity from an
ejection orifice of the nozzle with using a nozzle opening at an opposite
side of the cavity as the ejection orifice. The exemplary method includes
making an ejection orifice on a side of the nozzle have a taper portion
in which the diameter increases progressively toward the ejection orifice
side and forming lyophobic films and lyophilic films alternately on the
taper portion inside the nozzle so as to form a stack film, and forming a
lyophobic film inside nozzle in which annular end surfaces of the
lyophobic films and annular end surfaces of the lyophilic films are
exposed alternately by grinding the stack film on the taper portion to
expose a side section of the stack film.