Patent ID: 8499453

Claim:
A method of manufacturing a liquid discharge head having a substrate including energy generating elements which generate energy used to discharge a liquid, and a discharge port member which is provided with discharge ports which discharge the liquid and is joined to the substrate, thereby forming liquid flow paths communicating with the discharge ports, the method comprising, in the following order: preparing a base having a conductive surface, a first insulating resist and a second insulating resist for forming the discharge ports, the first and second insulating resists being stacked on the conductive surface in the listed order; performing first plating using the first resist and the second resist as masks so as to form a first plated layer on the conductive surface so that the height of the top surface of the first plated layer from the base is higher than the height of the top surface of the first resist from the base and is lower than the height of the top surface of the second resist from the base; removing the second resist; performing second plating on the conductive surface using the first resist as a mask, thereby forming a second plated layer so as to cover the first plated layer; removing the base and the first resist, thereby forming the discharge port member; and joining together the substrate and the discharge port member.