Patent ID: 8137573

Claim:
A method for manufacturing a liquid ejection head including a substrate and a member which is disposed above the substrate and which has passage communicatively connected to discharge port through which a liquid is ejected, the method comprising: providing first solid layers made of a positive photosensitive resin above the substrate such that outer side surfaces of the first solid layers form an obtuse angle with the substrate; providing a second solid layer above the substrate such that the second solid layer abuts the outer side surfaces of the first solid layers, the second solid layer being processed into at least one portion of a mold for the passage; forming at least one portion of the mold for the passage from the second solid layer; exposing portions of the outer side surfaces of the first solid layers through the second solid layer; removing the exposed portions from the first solid layers; providing a cover layer over the portion of the mold for the passage and; removing at least the portion of the mold to form the passage for forming the member.