Ink-supply tank for a dot matrix printer

  • US 5,615,957 A
  • Filed: 06/05/1995
  • Issued: 04/01/1997
  • Est. Priority Date: 05/22/1984
  • Status: Expired due to Term
First Claim
Patent Images

1. A dot matrix printer comprising:

  • a printing apparatus;

    an ink supply system mounted in said printing apparatus; and

    an ink supply tank mounted in said printing apparatus, said ink supply tank operatively engaging with said printing apparatus through said ink supply system, said ink supply tank dimensioned to accommodate ink therein to be delivered to said ink supply system, said ink supply tank comprising;

    a tank housing having an interior space defined in part by first and second spaced opposed walls;

    an ink supply delivery port extending through a first wall of said tank housing said port having an opening to said interior space to permit the passage of ink from said interior space to the exterior of said tank housing; and

    an ink absorbing member substantially filling said interior space of said tank housing and being formed of a porous material, said ink absorbing member having a region facing and at least in part engaging said opening to said ink supply delivery port;

    said second wall of said tank housing being spaced at least in part sufficiently apart from said ink absorbing member to provide an air communication space therebetween, said tank housing being formed with an air communication hole therethrough, said air communication space being in fluid communication with ambient air through said air communication hole.

View all claims

    Thank you for your feedback