Patent ID: 7275310

Claim:
A method for manufacturing an ink-jet recording head provided with ejection nozzles, the method comprising the steps of: providing a support component; forming a resin layer on the support component; forming a plurality of through holes in the resin layer such that said each through hole has an aperture diameter smaller than, or equal to, a maximum linear distance between intersection points of a straight line passing through a geometric center of the ejection nozzle and an edge of the ejection nozzle in an ejection nozzle surface; forming a substrate including a first surface and a second surface opposing the first surface, the ejection nozzles provided about the first surface, thermal energy generating elements disposed about the ejection nozzles at the first surface, and an ink supply hole penetrating through the first surface to the second surface; joining the resin layer to the second surface of the substrate; and removing the support component from the resin layer.