Patent ID: 7562452
Filing Date: 2009-07-21
Classification: B41J,Y10T

Abstract:
1. A method for manufacturing a liquid ejection element including a liquid flow path which is open at an ejection outlet for ejecting liquid and an energy generating member for generating energy usable for ejecting the liquid from the liquid flow path through the ejection outlet, said method comprising the steps of: forming the energy generating member on a front side of a substrate; forming, through said substrate, a penetrating electrode which is electrically connected with said energy generating element and which penetrates through said substrate from said front side to the back side thereof; forming a top plate member on said side having said energy generating member formed by said energy generating member forming step, wherein said top plate member is a member in which said liquid flow path and said ejection outlet are formed; and thinning said substrate, having said top plate member formed thereon by said top plate member forming step, from a back side thereof, wherein said top plate member forming step includes a step of forming a resist layer at a position to form said liquid flow path, a step of applying photosensitive resin material on the resist and forming an ejection outlet in said photosensitive resin material by exposure and development, and a step of removing said resist after said thinning step.