A printing group of a printing press has two forme cylinders, and two transfer cylinders which are assigned to the two forme cylinders and which, in a print-on position, cooperate to form a printing position. The forme cylinders and the transfer cylinders each have at least one groove or slit on their shell face which groove or slit is adapted to secure ends of a blanket or a dressing. The forme cylinders have circumferences which correspond to a section length of a printed page. Rotating shafts of the forme and transfer cylinders, when in the print-on position, are located in a common plane. The circumferential width of each of the grooves or slits, in the shell faces of the cylinder does not exceed 3 mm.