Apparatus comprising a plurality of printing units for printing hollow elements

A device having a plurality of printing units, each for printing on hollow bodies, wherein a transport device that transports the hollow bodies to be printed on into a printing area of at least one of the printing units is provided, wherein at least one of the printing units has a printing forme cylinder, characterized in that a plate changer is provided, and is assigned to the printing forme cylinder of the one of the printing units, the plate changer having a bearing surface on which a printing forme that one of is and will be arranged on the printing forme cylinder can be placed, wherein, when the bearing surface of the plate changer is in a first position, in which the plate changer is located laterally next to the printing unit, it occupies a first operating position, in which first operating position the printing forme can be one of brought forward on the plate changer and removed from the plate changer, and wherein, when the bearing surface of the plate changer is in a second position, in which the plate changer is located directly in front of, and along the printing forme cylinder, it occupies a second operating position, in which second operating position the printing forme can be one of placed from the plate changer directly onto the printing forme cylinder and can be removed from the printing forme cylinder, paced on the bearing surface and carried away, with the plate changer, to the first operating position of the plate changer.