Inkjet printer with low nozzle to chamber cross-section ratio

Details Inkjet printer with low nozzle to chamber cross-section ratio Inkjet printer with low nozzle to chamber cross-section ratio

2008-07-01

2008-07-01

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000

Reexamination Certificate

active

07393083

ABSTRACT:
An inkjet drop ejection apparatus having a chamber with a nozzle; and,an actuator for ejecting drops of ink through the nozzle; wherein,the area defined by the nozzle is less than half a cross sectional area of the chamber.A chamber with a relatively large internal cross section will accommodate a large actuating surface. As the nozzle area is relatively small, the actuator need only move a small amount to force a drop out of the nozzle with sufficient kinetic energy. Smaller movements of the actuator are more energy efficient. Some designs can use the relatively large volume of ink in the chamber to cool the actuator and eventually remove the heat via the ejected drops.

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