Patent ID: 8959735
Filing Date: 2015-02-24
Classification: B41J,Y10T

Abstract:
1. A manufacturing method of a liquid ejection head including a substrate on which a plurality of elements each generating energy for ejecting liquid is aligned and which has a supply port extending in an alignment direction of the plurality of elements; an ejection outlet plate provided with a plurality of ink ejection outlets each ejecting liquid; a channel communicating with the plurality of ejection outlets and the supply ports formed between the substrate; and the ejection outlet plate by joining of the ejection outlet plate onto the substrate; and a projection portion having a slit at a position facing the supply port of the ejection outlet plate, the method comprising the steps of: forming a first member on the substrate; forming a mold material for forming the slit between first member on the substrate; forming a second member serving as the ejection outlet plate on the mold material; and forming the projection portion by removing the mold material.