Nozzle arrangement having annulus shaped heater elements

Details Nozzle arrangement having annulus shaped heater elements Nozzle arrangement having annulus shaped heater elements

2009-06-09

2010-06-29

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S054000, C347S048000

Reexamination Certificate

active

07744196

ABSTRACT:
A nozzle arrangement is provided for ejecting ink. The nozzle arrangement includes a substrate assembly defining an ink inlet passage. A nozzle chamber structure extends from the substrate assembly to define a nozzle chamber in fluid communication with the ink inlet passage. The nozzle chamber structure defines an aperture through which ink in the nozzle chamber can be ejected. A pair of parallel heater elements extends from the nozzle chamber structure and into the nozzle chamber, and can be supplied with current so that ink in the nozzle chamber is ejected out through the aperture. Each heater element is shaped to define at least one broken annulus, in turn, comprising said at least one arcuate portion.

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