INK JET RECORDING HEAD AND MANUFACTURING METHOD THEREOF

To realize an ink jet recording head which is further improved in heat dissipation property, the ink jet recording head provided with a substrate provided with a plurality of discharging energy generating portions for discharging an ink droplet comprises: a plurality of electrical wiring electrodes for supplying electrical signals to the plurality of discharging energy generating portions provided in the substrate; a plurality of auxiliary electrodes not used for the supply of electrical signals to the plurality of discharging energy generating portions provided in the substrate, a first sheet comprising a wiring pattern electrically conductive to an electrical wiring electrode to be connected to the plurality of electrical wiring electrodes, and a second sheet comprising a wiring pattern electrically conductive to the auxiliary electrode terminal to be connected to the plurality of auxiliary electrodes, the ink jet recording head comprising a wiring sheet in which the first sheet and the second sheet are arranged so as to be superposed on each other.