Ink jet recording head, method for producing the same and recording apparatus equipped with the same

摘要

An ink jet recording head is provided with a heat-generating resistance layer for generating thermal energy used for ink discharge, and a wiring electrode layer electrically connected to the heat-generating resistance layer, also provided on a substrate with an electro-thermal converting element, an insulating protective layer covering the electro-thermal converting element, and an external electrical connection portion electrically connected to the electro-thermal converting element and to be adhered to an external wiring for applying a voltage to the electro-thermal converting element. Further, the external electrical connection portion is formed by a film grown by electroless plating from the wiring electrode layer through a through hole formed in the insulating protective layer.