An ink jet head comprises an ink flow path formed by laminating cured films or photosensitive compositions and an ink discharging orifice, at least the ink discharging orifice region being composed of the cured films. A method for fabrication of an ink-jet head comprises forming a first film of a cured photosensitive resin on a surface of a substrate on which an ink discharge pressure generating element is arranged, produced an ink flow path with a second film of a cured photosensitive resin formed on the first film, further disposing a third film of a cured photosensitive resin on the second film, and forming an ink discharging orifice connected to the ink flow path, with the said first, second and third films of cured photosensitive resins.