Liquid discharge head and method for manufacturing such head

Details Liquid discharge head and method for manufacturing such head Liquid discharge head and method for manufacturing such head

2007-11-13

2007-11-13

Meier, Stephen (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S061000

Reexamination Certificate

active

11305001

ABSTRACT:
A liquid discharge head includes a heater provided on an element substrate, a nozzle including a discharge port portion having a discharge port for discharging a liquid droplet, a bubbling chamber, a supply path for supplying liquid to the bubbling chamber, a supply chamber for supplying the liquid to the nozzle and an orifice substrate. The bubbling chamber includes a first bubbling chamber and a second bubbling chamber above the first bubbling chamber, and the discharge port portion communicates with the second bubbling chamber via a stepped portion. A side wall of the second bubbling chamber converges toward the discharge port with an inclination of 10 to 45 degrees. The nozzle is provided with a control portion including a stepped portion in the flow path near the bubbling chamber. A maximum height of the flow path is smaller than a height of a lower surface of the discharge port portion.

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