Liquid discharge head and method for manufacturing recording...

Details Liquid discharge head and method for manufacturing recording... Liquid discharge head and method for manufacturing recording...

2005-06-28

2005-06-28

Meier, Stephen D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S061000

Reexamination Certificate

active

06910760

ABSTRACT:
A liquid discharge head includes a first bubbling chamber, a second bubbling chamber arranged thereon, and a discharge port portion communicated with the second bubbling chamber with a difference in level. The sidewalls of the second bubbling chamber contract in the direction toward the discharge port at an inclination of 10 to 45°. On the circumferential portion of the upper face of the first bubbling chamber in contact with an 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.

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