A divider or organizer is located within a ribbon cartridge between the entrance and exit areas thereof to facilitate the flow of an endless ribbon through the cartridge. The divider, in cooperation with an end wall of the cartridge, form an area which diverges away from the entrance area and also form an area which converges towards the exit area to facilitate the flow of the ribbon through the cartridge. A ribbon guiding section formed on the cartridge to change the path of the ribbon in several planes substantially perpendicular to one another enables the cartridge to be compact.