Substrate for ink jet printing head, ink jet printing head, method for the production of a printing head of the ink jet printing apparatus and ink jet

摘要

Substrate for ink jet printing head, ink jet printing head, method for the production of a printing head of the ink jet and ink jet printing apparatus of the present invention relates to a substrate for a print head to jet of T. Inta comprises: a base; a plurality of heating resistors for heating the ink.The heating resistors are arranged in the base and producing heat in a case where heating resistors are energized; a first protective layer disposed in the heating resistors and having insulation properties; and a second protective layer arranged in the first RA protective layer and having conductivity.The second protective layer includes individual sections arranged to cover the plurality of heating resistors individually, a common section connecting the individual sections and connecting sections interposed between the individual sections and the common section and connecting the seu00e7u00f5 Individual operations and the joint section.The connecting sections are arranged in positions so as to be in contact with the ink and includes a material which changes to a film of insulation by an electrochemical reaction with the ink.