Ink jet recording head and method of producing ink jet recording head

[0063]Hereinafter, an exemplary embodiment of the present invention is described in detail.

[0064]An ink jet recording head was produced by employing the steps of FIGS. 2A to 2H. As illustrated in FIG. 2A, polymethyl isopropenyl ketone as a photosensitive resin material (manufactured by TOKYO OHKA KOGYO Co., Ltd., trade name: ODUR-1010) was applied onto the substrate 1 (FIG. 2A) provided with the energy-generating element 2 so as to have a thickness of 14 μm. Next, the ink flow path-forming material layer 3 serving as a mold of an ink flow path was formed with an exposing apparatus UX3000 (trade name, Ushio Inc.) (FIG. 2B).

[0065]Next, as illustrated in FIG. 2C, a cationic polymerization type photo-curable resin material having the composition illustrated in Table 1 was applied onto the mold of an ink flow path from the surface of the substrate (surface of the substrate 1 on the side where a photosensitive resin layer was to be provided) so as to have a thickness of 25 μm, and was then h