Patent ID: 8034399

Claim:
A method for manufacturing an ink jet head comprising a head substrate having discharge elements for discharging ink, and an electric wiring board electrically connected to the head substrate, the method comprising the steps of: applying a first sealant to a periphery of the head substrate, the first sealant comprising a base resin and a curing agent, and the periphery constituting a boundary between the head substrate and a member supporting the head substrate; providing a second sealant comprising the same base resin and the same curing agent as in the first sealant, the second sealant having a curing rate substantially the same as a curing rate of the first sealant; applying the second sealant to an electric splice between the head substrate and the electric wiring board so as to cover the applied first sealant; and starting heating and curing of the first and second sealants simultaneously.