member 4 in the case where stress is applied to electrode portion 32 the peeling off of electrode portion 32 can be prevented and generation of disconnection can be prevented thus electrode portion can be protected further by providing electrode protection member 4 in the case of coating adhesive the adhesive can be evenly coated due to the surface contact between electrode protection member 4 and bending portion 11 which leads to improve working efficiency the present invention will be described by using examples however the present invention shall not be restricted by the examples as shown in table 1 below electrode protection members made of ptfe having thickness of 0 05 mm 0 5 mm are mounted on the above described ink jet head 10 in which the distance between the cap member and the wiring board is arranged to be 1 mm or 2 mm and the ink jet head was subjected to three cycle heat shock tests of heating and cooling within the temperature range of u2212 20 u00b0 c to 80 u00b0 c after the heat shock test conditions of wiring connection were checked and evaluated as described below a there is no generation of disconnection in the electrode portion b there are slight generations of disconnections in the electrode portion as shown in table 1 below electrode protection member made of ptfe having thickness of 0 8 mm or 1 0 mm are mounted on the above described ink jet head 10 in which the distance between the cap member and the wiring board is arranged to be 2 mm or 3 mm and the ink jet head was subjected to the same heat shock tests as the above and similarly evaluated as shown in table 1 below electrode protection member.