Ink-jet recording apparatus and ink tank cartridge thereof

CAFC
  • US 5,488,401 A
  • Filed: 08/11/1992
  • Issued: 01/30/1996
  • Est. Priority Date: 01/18/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. An ink tank cartridge for an ink-jet type recording apparatus being removably mountable onto an ink supply needle of said ink jet type recording apparatus, said ink supply needle having at least one-throughhole to allow ink from said ink tank cartridge to pass therethrough, the ink tank cartridge comprising:

  • a housing formed with a chamber therein;

    an ink supply port extending through and projecting from a wall of said housing, said ink supply port having a first opening directed towards said chamber of said housing and a second opening directed away from said wall of said housing;

    at least one porous member accommodated in said chamber of said housing for having ink impregnated therein, said porous member resiliently abutting against said first opening of said ink supply port;

    a packing member provided within said ink supply port towards said second opening, said packing member being formed with a hole therethrough dimensioned to receive said ink supply needle and to resiliently abut against an outer periphery of said ink supply needle of said ink jet type recording apparatus, said packing member preventing the flow of ink through said ink supply port other than through said ink supply needle when said needle is positioned in said ink supply port; and

    a sealing member separate from said packing member positioned to seal said second opening of said ink supply port before said ink tank cartridge is mounted on said ink supply needle and to be penetrated by said ink supply needle when said ink tank cartridge is mounted on said ink supply needle.

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