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Ink cartridge having retaining structure

  • US 7,325,915 B2
  • Filed: 02/18/2005
  • Issued: 02/05/2008
  • Est. Priority Date: 04/03/2001
  • Status: Expired due to Term
First Claim
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1. An ink cartridge, comprising:

  • a first region, a second region, a top region and a bottom region;

    an ink supply port formed in the bottom region, the ink supply port having an axis;

    a first retaining member disposed on the first region, the retaining member having a protruding engagement portion;

    a projection disposed on the second region closer to the bottom region than to the top region, and extending away from the first region, the projection having a surface lying in a plane that is substantially parallel to the axis;

    a memory unit disposed on the ink jet cartridge; and

    a plurality of electrodes disposed on the surface and which are in electrical communication with the memory unit.

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