Abstract: An ink ribbon cassette repeatedly usable for an extended period of time by replenishment of ink to an ink ribbon after each printing operation. The cassette includes a cassette casing, an ink-storing member disposed within the cassette casing and storing ink liquid as absorbed therein, an ink-absorbing member disposed within the cassette casing for absorbing the ink liquid from the ink-storing member through contact thereof with the ink-storing member. A wall member is disposed within the cassette casing and encasing the ink-storing member and the ink-absorbing member, the wall member defining an opening for allowing a portion of the ink-absorbing member to be exposed therethrough to the outside. A replenishing roll is provided to be rotatable while elastically contacting the ink-absorbing member through the opening so as to replenish the ink liquid to an ink ribbon being moved.

Abstract: A fabric foundation for an ink ribbon comprising a woven fabric comprising warp yarns and weft yarns, and the woven fabric satisfying the following equation:K=1.5 to 6wherein K is the ratio of C.sub.1 /C.sub.2 ; C.sub.1 is a warp crimp rate; and C.sub.2 is a weft crimp rate. The ink ribbon fabric foundation is hardly damaged under severe printing conditions such as high speed and strong striking force, offering an extended life.