ribbon core has a longitudinally elongated projection on its inner surface which is complementary to and in engagement with the groove in the shaft the separators can be simple cylindrical tubes this structure obviates cooperating notches and tabs at ends of the ribbon cores and separators and makes it possible to achieve miniaturization by minimizing the wall thickness of the ribbon cores application_number US 72290500 A description the wide ribbon slitting device shown in fig2 comprises a drawing out section a a slitting section b and a reeling section c in the drawing out section a a wide ink ribbon r supplied as a roll on a supporting shaft r 1 is unreeled and delivered to the slitting section b where it is slit longitudinally by a plurality of cutters c to form plural separate narrow ink ribbons r the narrow ink ribbons r are wound into reels in the reeling section c in the conventional slitting device the reeling section utilizes take up bodies as illustrated in fig3 a 3 c as shown in fig2 the ink ribbons emerging from the slitting section b are divided alternately into upper an lower ribbons the upper ribbons being wound onto an upper ribbon take up.