Abstract: A printing machine for cylindrical objects (100), comprising carousel means (2) for moving for locating the cylindrical objects (100) in a successive number of work stations, among which at least a printing station (3) and a drying station (4); at least a means for inking (30) for printing on the lateral surface of a cylindrical object (100) located in the printing station (3); and at least a drying device (5) for generating a beam of rays which strike a cylindrical object (100) located in the drying station (4); the drying device (5) comprising an obturator (57) for intercepting the beam of rays when the means for moving transfer the objects (100) from one station to another.