Liquid discharge head having hollow portions for relaxing...

Details Liquid discharge head having hollow portions for relaxing... Liquid discharge head having hollow portions for relaxing...

2006-10-16

2009-12-01

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000, C347S063000

Reexamination Certificate

active

07625069

ABSTRACT:
A liquid discharge head includes a substrate having an energy generating element configured to generate energy required to discharge liquid, a discharge port configured to discharge the liquid and provided in an opposed relationship to the energy generating element, a wall member defining a chamber adapted to store the energy required to discharge liquid the energy being generated by the energy generating element, a discharge portion defining a fluid path connecting the chamber and the discharge port, a supply path facilitating supplying the liquid into the chamber, and a pair of hollow portions provided in the wall member, wherein the hollow portions oppose each other and sandwich at least the entire discharge port in a direction from the discharge port to the substrate, and the hollow portions are independent of the chamber.

REFERENCES:
patent: 4578687 (1986-03-01), Cloutier et al.
patent: 6799831 (2004-10-01), Inamoto et al.
patent: 6984026 (2006-01-01), Tomizawa
patent: 13-322271 (2001-11-01), None

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