PURPOSE: To prevent a ribbon pull-out sheet which is provided at the leading end of an ink ribbon and the ink ribbon from sagging, for a so-called single type ribbon cartridge for which an ink ribbon is wound around a ribbon reel for feeding, which is rotatably supported in a cartridge main body.

CONSTITUTION: A ribbon reel for feeding 30 around which an ink ribbon 40 is wound is rotatably supported in an approximately cylindrical cartridge main body 2 made of a synthetic resin, which has a ribbon feeding port 3, and a ribbon pull-out sheet 41 is joined to the leading end of the ink ribbon 40. Also, ribs 13b, 23b as guide parts to guide both side parts 41b, 41b of the ribbon pull-out sheet 41 are respectively formed to be projected into an arc shape along inner walls 13a, 23a, with one rib per wall, on the inner wall surfaces 13a, 23a of the cartridge main body 2.