| 摘要 |
A liquid discharge head, which comprises heater element base plate provided with the heater and orifice base plate provided with nozzle having discharge port portion with discharge port for discharging liquid droplets, bubbling chamber, and supply path for supply liquid to the bubbling chamber, and supply chamber for supply liquid to the nozzle, is formed by a first bubbling chamber and a second bubbling chamber arranged thereon, and the discharge port portion is communicated with the second bubbling chamber with a difference in level, and the sidewalls of the second bubbling chamber is contracted in the direction toward the discharge port at an inclination of 10 to 45°, and then, on the circumferential portion of the upper face of the first bubbling chamber in contact with the opening communicated with the second bubbling chamber, an extrusion is formed continuously to surround the opening in the direction toward the main surface of the element base plate. The structure thus arranged, the liquid discharge head is capable of performing higher speed discharge of liquid droplets with the attempted stabilization of discharge volume of liquid droplet and enhancement of the discharge efficiency thereof. The method of manufacture therefor is also provided.
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