A printing assembly has at least one transport direction defined by a transport path provided for the transport of printing material through the printing assembly. The printing assembly has at least one first support body on which at least one first image-generating device is arranged and which at least one first support body extends both in the transport direction and in a transverse direction that is oriented horizontally and orthogonally to the transport direction. The printing assembly has at least one first temperature-control device for the targeted generation of a temperature difference between a first point of the at least one first support body and at least one second point of the at least one first support body. That second point is spaced apart from the first point, at least in the transport direction.