Abstract: The invention relates to a cassette for use in connection with a device for printing characters on a surface from the stroke impact of a dye impregnated ribbon such as a typewriter, and features a housing defining an aperture for ventilating a chamber defined therein, re-impregnating means disposed in the chamber and operable for re-impregnating the ribbon dye, and locking means removably engaged with the aperture and operable to activate the re-impregnating means during disengagement of the locking means with the aperture.

Abstract: A cassette, for use in connection with a device for printing characters on a surface from the stroke impact of an endless dye impregnated ribbon such as a typewriter, the device defining a stroke region, features a housing defining two chambers, one of the chambers providing a storage region, the housing having a passageway for the ribbon, the passageway interconnecting with the storage region and being adapted to communicate with the stroke region, the ribbon being adapted to move between the stroke area and the storage region, re-impregnating means disposed in the other chamber and operable for re-impregnating the ribbon with dye, and transport means disposed substantially between the chambers and the passageway and operable for transporting the ribbon and for maintaining the ribbon substantially stretched in the stroke region.