a cutting device 36 to the same length as the printed sheet 23 to form the roll illustrated in fig2 and 6 of a length one turn shorter than the printed sheet 23 to form a roll illustrated in fig5 or of a length one turn longer than the printed sheet 23 to form a roll as shown in fig3 for further protection of the printed sheet after rolling up it is advantageous to make the cover sheet wider than the printed sheet and then fold the projecting edges at the end of the roll into the latter the adhesive strip 40 is fed in synchronism with the trailing edge of a cut off cover sheet 25 and stuck by a projecting part onto said trailing edge in the roll forming space the projecting part then tightly closes the formed roll for example in order to form the roll shown in fig3 and 6 the roll formed drops from the roll up device into the receiving tray 45 by the guide 33 which swings away from the roll when the device shown in fig7 is used for printing receiving material 23 which may have different widths the cover material 25 should have a width corresponding to the maximum width of the material for printing the purpose of this is to avoid the need to keep stocks of cover material of different widths however one possible embodiment is one in which the cover material has a fixed narrow width in.