A printing press comprising a multi-plate plate cylinder for carrying at least a first printing plate and a second printing plate, the plate cylinder having a cylinder body with an outer surface and a lock-up bar having a retracted position and an extended position, the lock-up bar for fastening both of the first and second plates about the outer surface in the retracted position. A user selects a process for execution. In another embodiment, the device comprises a valve for permitting the filling of the attenuation device through a filling device.