Abstract: A device and method for printing on cylindrical curved surfaces. In the preferred embodiment, the device is an inkjet printer including a printing rack that holds a plurality of cylindrical objects like test tubes or pipes, a printing unit including a UV light source and a removable ink cartridge. The ink cartridge includes a plurality of ink nozzles and ink reservoir. In the preferred embodiment, the printing rack moves the printing objects relative to the printing unit. The printing unit preheats the printing objects prior through the use of the UV light source, and after printing the UV light source is used to cure the ink on the surface to produce a high quality print result.