Patent ID: 9061489
Filing Date: 2015-06-23
Classification: B41J

Abstract:
1. A substrate for an inkjet head comprising: a base; a plurality of heating resistors being disposed on the base and producing heat for heating ink in a case where the heating resistors are energized; a first protection layer covering the heating resistors and having electrical conductivity; and a second protection layer being disposed between the first protection layer and the heating resistors, the second protection layer electrically insulating the first protection layer from the heating resistors, wherein the first protection layer includes individual sections provided at positions corresponding to the plurality of heating resistors and a common section which commonly connects the individual sections, wherein the individual sections and the common section are connected via connect sections which include at least one of Ir and Ru, wherein the connect sections are formed to have a thickness smaller than that of the individual sections, and wherein the connect sections are eluted by an electrochemical reaction that occurs between the connect sections and ink so that an electrical connection between the individual sections and the common section is cut.