Fluid supply tank ventilation for a micro-fluid ejection head

  • US 7,938,523 B2
  • Filed: 06/13/2007
  • Issued: 05/10/2011
  • Est. Priority Date: 06/13/2007
  • Status: Active Grant
First Claim
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1. A fluid supply tank for a micro-fluid ejection head, the fluid supply tank comprising:

  • a body portion for holding a fluid to be ejected, the body portion having a fluid exit port on an exit end thereof and a cover on an opposing end thereof of the body portion, the cover having an opening in fluid communication with atmosphere;

    an internal vent conduit disposed between the exit end and the cover for removing air adjacent to the fluid exit port and releasing the air through the cover to said atmosphere; and

    an air space in the fluid exit port wherein the internal vent conduit is in air flow communication with the air space and the cover.

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