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Ink delivery system for an inkjet printhead

  • US 5,278,584 A
  • Filed: 04/02/1992
  • Issued: 01/11/1994
  • Est. Priority Date: 04/02/1992
  • Status: Expired due to Term
First Claim
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1. A printhead for an ink printer comprising:

  • a substrate having a top surface and an opposing bottom surface, and having a first outer edge along a periphery of said substrate;

    a nozzle member having a plurality of ink orifices formed therein, said nozzle member being positioned to overlie said top surface of said substrate;

    a plurality of heating means formed on said top surface of said substrate, each of said heating means being located proximate to an associated one of said orifices for vaporizing a portion of ink and expelling said ink from said associated orifice; and

    a fluid channel, communicating with an ink reservoir, leading to each of said orifices and said heating means, said fluid channel allowing ink to flow from said ink reservoir, around said first outer edge of said substrate, and to said top surface of said substrate so as to be proximate to said orifices and said heating means.

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