Nozzle members, compositions and methods for micro-fluid ejection heads

  • US 7,364,268 B2
  • Filed: 09/30/2005
  • Issued: 04/29/2008
  • Est. Priority Date: 09/30/2005
  • Status: Active Grant
First Claim
Patent Images

1. An improved photoimaged nozzle member for a micro-fluid ejection head, the nozzle member comprising a photoresist nozzle layer applied adjacent a thick film layer on a substrate having fluid ejector actuators, the photoresist nozzle layer having a plurality of nozzles therein, wherein the nozzles are formed in the nozzle layer from an exit surface of the nozzle layer to an entrance surface of the nozzle layer, and the nozzles have a reentrant profile with a wall angle greater than about 4°

  • up to about 30°

    measured from an axis orthogonal to a plane defined by the exit surface of the nozzle layer.

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