Printing device for printing machines of various kind, which is made in such a way that to permit to print paper pages and sheets of any size, with a number of copies larger than those attainable with the current printing machines and with high printing accuracies. Printing device comprising a plurality of cylinders having at least a double height, including cauotchouc-covered printing cylinders (10, 11), which are magnetically attracted with each other during the printing process, thereby preventing any undesired mechanical vibration of the same cylinders, which could be prejudicial for the printing quality, and cylinder-plates (16, 17) which are attracted by the opposite printing cylinders during the printing process, and which are covered with a number of printing plates identical to the number of copies of paper pages and sheets to be printed. The invention also discloses other particular component parts of this printing device.