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Ink ejection nozzle arrangement for an inkjet printer

  • US 7,771,018 B2
  • Filed: 06/15/2008
  • Issued: 08/10/2010
  • Est. Priority Date: 07/15/1997
  • Status: Expired due to Fees
First Claim
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1. An ink ejection nozzle arrangement for an inkjet printer, said nozzle arrangement comprising:

  • a wafer substrate with an etched ink chamber and ink channel leading to the chamber;

    an ink ejection nozzle defined over the chamber with an ejection port etched therein;

    a dielectric actuator arm attached to the substrate via a post on the substrate, said arm having a heating means formed of an electrically conductive material attached at a lower portion thereof proximate said post, wherein the arm extends through a slot in the chamber; and

    a paddle fast with the arm inside said chamber, the paddle interposed between the ink channel and the ejection port, whereinthe paddle is substantially bowl shaped with a depression portion of such bowl distal from the ejection port to facilitate the ejection of ink from the ink chamber.

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