Patent ID: 7611827
Filing Date: 2009-11-03
Classification: B41J,G03F

Abstract:
1. A process for manufacturing an ink jet head comprising a discharge port for discharging an ink, an ink flow path communicated with said discharge port, and a substrate provided with an energy generating element for generating energy for discharging ink from the discharge port, characterized in that the process comprises: providing a precursor comprising a first photosensitive resin layer laminated by a second photosensitive resin layer on said substrate, the second photosensitive resin layer including a composition comprising (a) a polyacrylate resin having structural unit represented by the following general formula (1), wherein the first photosensitive resin layer is positioned on the side of the substrate wherein, X represents a hydroxyl group or a methylolamino group; R wherein R patterning, by a photolithographic process, said second photosensitive resin layer to form a second ink flow path pattern which has a shape of a portion of the ink flow path; patterning said first photosensitive resin layer to form a first ink flow path pattern which has a shape of another portion of the ink flow path; providing a coating resin layer for forming the wall of the ink flow path on said first ink flow path pattern and the second flow path pattern; forming an ink discharge port in the coating resin layer; and removing the first ink flow path pattern and the second ink flow path pattern to form the ink flow path.