Radiation activated micro-fluid ejection devices and methods...

Details Radiation activated micro-fluid ejection devices and methods... Radiation activated micro-fluid ejection devices and methods...

2006-11-20

2010-11-30

Nguyen, Lamson D (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07841700

ABSTRACT:
Micro-fluid ejection devices, such as inkjet printheads, such as those that use a laser to eject fluid. One such micro-fluid ejection device includes a passageway plate defining a fluid chamber filled with fluid and a fluid channel to supply the fluid chamber with fluid, a top plate provided on the passageway plate, a fluid ejection hole formed through the top plate at a position corresponding to the fluid chamber, a condenser lens provided on a bottom surface of the passageway plate at a position corresponding to the fluid chamber, and laser beam irradiator capable of irradiating a laser beam through the condenser lens and into fluid contained in the fluid chamber, wherein the fluid is nucleated by the laser beam such that a vapor bubble forms and displaces a portion of the fluid, thereby ejecting a fluid droplet through the fluid ejection hole. Method of using such devices are also disclosed.

REFERENCES:
patent: 5021808 (1991-06-01), Kohyama
patent: 6854829 (2005-02-01), Te
patent: 6857368 (2005-02-01), Pitz
patent: 2004/0201646 (2004-10-01), Sohn et al.
patent: 2006/0187260 (2006-08-01), Yaron

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