INK RIBBON CASSETTE

PROBLEM TO BE SOLVED: To provide an ink ribbon cassette especially useful as a both-sided print type in which the winding position of an ink ribbon on a winding core is corrected automatically. SOLUTION: A pair of rotatable cores are contained in a cassette body 10 and an ink ribbon 12 is wound between the cores wherein one core serves as a feeding core and the other core serves as a winding core. The ink ribbon 12 is led out to the outside of the cassette body 10 substantially in the center of the pass line thereof and the cassette body 10 is provided, at the front end part thereof, with a recess 13 to be fitted with a print head cooperating with the ink ribbon 12 being led out to print on a recording medium. A plurality of guide rollers 21-24, 31-34 are provided between the recess 13 and the feeding and winding cores. The guide roller 31 immediately in front of the winding core is inclined against a normal depending on the position for winding the ink ribbon. Preferably, the guide roller 31 is inclined vertically inward with respect to a normal in the range of 1-5 deg..