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FLOW PASSAGE ASSEMBLY AND METHOD FOR MANUFACTURING FLOW PASSAGE ASSEMBLY, INKJET RECORDING HEAD, AND RECORDING APPARATUS

  • US 20120293588A1
  • Filed: 05/04/2012
  • Published: 11/22/2012
  • Est. Priority Date: 05/16/2011
  • Status: Active Grant
First Claim
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1. A method for manufacturing a flow passage assembly, comprising:

  • forming a first flow passage in a first joint interface formed by welding a first surface of a first flow passage forming member to a first surface of a second flow passage forming member using an ultrasonic welding process; and

    forming, after the first flow passage is formed, a second flow passage in a second joint interface formed by welding a first surface of a third flow passage forming member to one of a second surface of the first flow passage forming member and a second surface of the second flow passage forming member using an ultrasonic welding process,wherein a total area of weld portions used when the first flow passage is formed is greater than a total area of weld portions used when the second flow passage is formed.

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