Liquid droplet spraying apparatus

Details Liquid droplet spraying apparatus Liquid droplet spraying apparatus

2007-03-06

2010-02-16

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07661802

ABSTRACT:
A liquid droplet spraying apparatus includes: a plurality of nozzles, a plurality of pressure chambers respectively connected to the nozzles, the pressure chambers each configured to store liquid to which spraying pressure is selectively applied, a common ink chamber that stores the liquid supplied to the pressure chambers; and narrowing portions coupled between the common liquid chamber and the plurality of pressure chambers to supply the liquid therethrough. The narrowing portions are larger in a pressure loss than the common liquid chamber and the plurality of pressure chambers. A ratio of a length of each of the narrowing portions in a liquid flowing direction with respect to a length of corresponding one of the pressure chambers in the liquid flowing direction is 0.34 or more, wherein the liquid flowing direction corresponds to a direction in which the liquid flows through the narrowing portions.

REFERENCES:
patent: 6736493 (2004-05-01), Sekiguchi
patent: 2005/0206681 (2005-09-01), Takahashi
patent: 1077331 (2001-02-01), None
patent: 1 361 063 (2003-11-01), None

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