| 摘要 |
A manufacturing method for an ink jet recording head, includes preparing a recording element substrate provided with energy generating means for generating energy for ejecting liquid, two opposing sides opposed to each other, an electrode portion disposed along a side sandwiched between the opposing sides to supply electric power to the energy generating means; preparing an electric wiring member provided with wiring leads for supplying electric power to the electrode portion from an outside, the electric wiring member being provided with sides opposed to the opposing sides of the recording element substrate and to the side sandwiched between the opposing sides; forming an electrical connecting portion at least one of the opposing sides by connecting the electrode portion and the wiring lead with each other; providing a gap L1 between one of the opposing sides of the recording element substrate and the side of the electric wiring member opposing the one of the opposing sides, and providing a gap L2 between the other one of the opposing sides and the side of the electric wiring member opposing the other one of the opposing sides, wherein the gap L1 is larger than the gap L2, and wherein the electrical connecting portion is interposed between the gap L1 and the gap L2; and supplying a sealing material in a direction from the gap L2 toward the gap L2 through the electrical connecting portion.
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