Field of the Invention
The present invention relates to a method of manufacturing a liquid ejection head to be used for visual recordings using ink or some other liquid.
Description of the Related Art
A method of manufacturing a liquid ejection head by forming nozzles (ejection ports) on a substrate having a through hole (ink supply port) running through the substrate by means of dry film resist is known (see the specification of U.S. Pat. No. 8,083,324). With the above-identified method, a structure having nozzles can be formed by forming a liquid path layer on a substrate having a through hole so as to cover the stepped portion of the substrate and then forming an orifice plate layer thereon, which is subsequently subjected to photolithography or like techniques.
USPTO Backgrounds
USPTO Backgrounds