Patent ID: 9139003
Filing Date: 2015-09-22
Classification: B41J,Y10T

Abstract:
1. A method for producing a liquid-ejection head including: a substrate on or above which a plurality of actuators are formed, the plurality of actuators generating energy for ejecting a liquid; and a flow-passage-forming member on or above the substrate, the flow-passage-forming member defining ejection ports through which the liquid is ejected and a plurality of liquid chambers each having a corresponding one of the plurality of actuators, the flow-passage-forming member including an orifice plate defining the ejection ports and liquid-chamber side walls defining side walls of the plurality of liquid chambers, the method comprising the steps of: (1) forming molds on or above the substrate, the molds being used as molding members for forming the plurality of liquid chambers; (2) forming the flow-passage-forming member by depositing an inorganic material on or above the substrate and the molds by chemical vapor deposition, the flow-passage-forming member having depressed portions each formed in an area between an adjacent pair of the liquid-chamber side walls in which the molds are not formed; (3) forming a photosensitive resin layer by depositing a photosensitive resin on the flow-passage-forming member and in the depressed portions; (4) forming filling members in the depressed portions by grinding the photosensitive resin layer until an upper surface of the orifice plate is exposed; (5) after grinding the photosensitive resin layer, forming the ejection ports in the flow-passage-forming member; and (6) after forming the ejection ports, removing the molds.