Method for manufacturing ink jet recording head and ink jet recording head manufactured by such method of manufacture

A method for manufacturing an ink jet head provided with an ink discharge mechanism structured to include at least an ink discharge port and an ink flow path on a member having a pressure generating source thereon, said pressure generating source giving pressure to ink being in contact therewith so as to propagate said pressure to the ink discharge port for discharging an ink droplet, and enabling said ink droplet to adhere to a recording medium, comprising the following steps of:

• forming in a thick film laminating step a patterning layer corresponding to the configuration of ink flow path on a member provided with said pressure generating source, and overcoating inorganic material layer on said pattering layer to form ink discharge surface;
• irradiating the patterned image of predetermined ink discharge port configuration by laser capable of completing sublimate ablation process before the laser beam is dispersed in a work piece as thermal energy;
• subsequently, executing the sublimate ablation process on an ink discharge port almost simultaneously from the inorganic material layer on the ink discharge side up to the interior of the thickness of said patterning layer corresponding to the configuration of ink flow path;
• and
• removing said patterning layer corresponding to the configuration of the ink flow path after processing said ink discharge port to manufacture an ink jet recording head.