Patent ID: 7550252
Filing Date: 2009-06-23
Classification: B41J,G03F

Abstract:
1. A method for producing an ink-jet recording head including a discharge port configured to discharge ink, a passage-forming member configured to form an ink passage communicating with the discharge port, and a substrate provided with an energy-generating element configured to generate energy utilized for discharging ink, comprising the steps of: forming a pattern, comprised of a positive photosensitive resin, for the ink passage on the substrate, the pattern containing an ultraviolet absorber that absorbs light having a wavelength of 300 nm or more, and being sensitive to light having a wavelength of less than 300 nm and insensitive to light of a wavelength of 300 nm or more; forming a coating resin layer, composed of a negative photosensitive resin, on the substrate so as to cover the pattern, the coating resin layer to become the passage-forming member; exposing the coating resin layer to light having a wavelength of only 300 nm or more to form the discharge port; and removing the pattern to form the ink passage.