| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid ejection head having an orifice plate that is hard to dissolve in liquid to be discharged and is stable in shape.SOLUTION: A liquid ejection head has a substrate, an energy generating element for generating energy to discharge liquid, and an orifice plate with a discharge port for discharging liquid formed therein, wherein the orifice plate contains silicon and carbon and when the content ratio of the silicon is defined as X (atom%) and the content ratio of the carbon is defined as Y (atom%), Y/X is 0.001 or more. |
