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Method and apparatus for refilling ink containers in a manner that preserves printhead life

  • US 6,450,629 B2
  • Filed: 04/24/2001
  • Issued: 09/17/2002
  • Est. Priority Date: 03/04/1998
  • Status: Expired due to Term
First Claim
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1. A method for refilling a previously used ink container for an ink jet printing system wherein the ink container includes an ink reservoir exhibiting an at least partially depleted ink condition, the ink reservoir including a fill port that is sealed, the method comprising:

  • inserting a separate sealing member in the fill port that is sealed to prevent passage of air into the ink reservoir through the fill port that is sealed;

    unsealing the fill port that is sealed while the sealing member prevents passage of air into the ink reservoir through the fill port; and

    filling the ink reservoir, through the sealing member and the fill port that is unsealed, with a refill ink while the sealing member prevents passage of air into the ink reservoir through the fill port.

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