Patent ID: 8074357

Claim:
A manufacturing method for an ink jet recording head, comprising: a step of preparing a recording element substrate provided with energy generating means for generating energy for ejecting liquid, and a plurality of electrode portions electrically connected with the energy generating means; a step of preparing an electric wiring member provided with a hole in which the recording element substrate is placed and a plurality of wiring leads which are electrically connected with the plurality of electrode portions, wherein a plurality of electrical connection portions, arranged in a predetermined direction, connect the plurality of electrode portions with the plurality of wiring leads, wherein a first gap between the recording element substrate and an inner edge of the hole, measured along a line passing through the plurality of electrical connection portions in the predetermined direction, is larger than a second gap between the recording element substrate and an opposite inner edge of the hole measured along the same line passing through the plurality of electrical connection portions; a step of preparing a sealing material discharging member; and a step of applying a sealing material while moving the sealing material discharging member, along the line passing through the plurality of electrical connection portions, from a portion of the electric wiring member adjacent to the first gap, across the first gap, across the plurality of electrical connection portions, across the second gap, to a portion of the electric wiring member adjacent to the second gap.