A printing group of a printing press has at least one forme cylinder, and at least one transfer cylinder which is assigned to the forme cylinders and which, in a print-on position, cooperate to form a printing position. The forme cylinder has at least one groove or slit on its circumferential face, which groove or slit is adapted to secure ends of a blanket or a dressing. The forme cylinder has a circumference which corresponds to a section length of a printed page. Rotating shafts of pairs 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.