Abstract: An endless printer ribbon cartridge for use in printing mechanisms for computer terminals, and the like, has a housing for mounting an endless wrapped ribbon there inside. The endless ribbon is fed from the inside of the wrapped portion over a predetermined path back onto the wrapped portion. The ribbon is wrapped around a roller on one end and a slidably mounted ribbon holding member on the other in which the slidably mounted ribbon holding member is guided in a predetermined direction and is spring biased so that the wrapped endless ribbon cartridge compensates for variations or changes in ribbon length.

Abstract: An endless inked ribbon printer cartridge for use in printing mechanisms for computer terminals, and the like, having a housing with a pair of protruding arms. A pair of spaced rollers are mounted in said housing and an endless inked ribbon wrapped around the rollers. The endless ribbon is fed from the rollers over a predetermined path between the arms. The spaced rollers have gear teeth formed therein and are connected by an idler gear therebetween so that they move together as the ribbon moves. Cartridge reliability is increased by the use of specific materials for the components along with a predetermined length of ribbon and predetermined inks impregnated in the ribbon.