Patent ID: 7300596

Claim:
A method of manufacturing a liquid discharge head, comprising: an adhesive layer coating step of coating an adhesive layer made of a polyether amide resin on a substrate including an array of energy generating elements which apply, to ink, energy for discharging the ink; a flow path wall forming step of forming, on the adhesive layer, a flow path wall disposed for the energy generating elements; an adhesive layer forming step of etching the adhesive layer by use of the flow path wall as a mask to pattern the adhesive layer; an imbedded material depositing step of depositing an imbedded material on the substrate having the flow path wall formed thereon so as to cover the flow path wall; a flattening step of substantially flatly polishing a top of the deposited imbedded material, until a top of the flow path wall is exposed; an orifice plate forming step of forming an orifice plate on the tops of the polished imbedded material and the exposed flow path wall; a discharge port forming step of forming a discharge port in the orifice plate; and an eluting step of eluting the imbedded material, wherein the imbedded material depositing step is performed after the adhesive layer forming step.