Patent ID: 6986982

Claim:
A method of manufacturing an inkjet recording head comprising the steps of: (i) forming a layer comprising a resist material on a substrate on which an ink ejection pressure generating element has been provided, and patterning the layer to form an ink flow-path pattern, the resist material comprising a polymer compound represent by a general formula (1) below; where R 1 and R 2 are each independently a hydrogen atom or an alkyl group: R 3 and R 4 are each independently an alkyl group; and m and n are positive integers; (ii) applying a liquid containing an epoxy resin that is solid at normal temperature onto the ink flow-path pattern to form a coating resin layer to be an ink flow-path wall; (iii) removing a portion of the coating resin layer disposed above the ink ejection pressure generating element to form an ink ejection opening; and (iv) removing the ink flow-path pattern, wherein, in the step (ii), the difference in refractive index between the coating resin layer formed on the ink flow-path pattern and the ink flow-path pattern is 0.03 or less.