Liquid discharge head and recording apparatus having the same

Details Liquid discharge head and recording apparatus having the same Liquid discharge head and recording apparatus having the same

2009-04-01

2011-10-11

Nguyen, Lamson D (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

08033652

ABSTRACT:
A liquid discharge head includes a discharge port array having discharge ports for discharging liquid, a liquid chamber for supplying liquid to the discharge port array, and a liquid introduction passage for introducing liquid to the liquid chamber. A vertical cross section of the liquid chamber has an elongated shape. The liquid introduction passage is wider than the liquid chamber in a width direction of the elongated shape. A communicating portion is longer than a width of the liquid chamber and shorter than the liquid chamber, and is projecting from the liquid introduction passage for the liquid chamber. A bottom of the liquid introduction passage is disposed at a lower position than a top of the liquid chamber in the communicating portion, and a distance between the top and the bottom is longer than half of the width of the liquid chamber.

REFERENCES:
patent: 6722757 (2004-04-01), Saito
patent: 6854831 (2005-02-01), Kubota et al.
patent: 7597427 (2009-10-01), Sugahara
patent: 2005/0285904 (2005-12-01), Toge

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