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Fluid supply mechanism

  • US 6,350,023 B1
  • Filed: 07/10/1998
  • Issued: 02/26/2002
  • Est. Priority Date: 07/15/1997
  • Status: Expired due to Fees
First Claim
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1. An ink supply unit for a printhead, the ink supply unit comprisinga molded component which is engageable with a lid, wherein the molded component is shaped to define a plurality of vias for, respectively, cyan, yellow and magenta ink, the component defining a slot in which the printhead is receivable, so that the vias are in fluid communication with through wafer channels defined in the printhead to supply the printhead with ink;

  • wherein the molded component is also shaped to define a plurality of sub-channels for cyan, yellow and magenta ink, respectively, and three main channels, each main channel in fluid communication with the respective sub-channels for cyan, yellow and magenta ink, each main channel being of greater cross-sectional area than each respective sub-channel;

    wherein each main channel has cross-sectional dimensions of approximately 1 mm×

    1mm, each sub-channel has cross-sectional dimensions of approximately 20 μ



    100 μ

    m and each via has cross-sectional dimensions of approximately 200 μ



    50 μ

    m; and

    wherein the molded component also defines three ink inlets, each ink inlet being in fluid communication with a respective main channel so that cyan, yellow and magenta ink can flow into the molded component.

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