The Printpress 339 is a printing machine suitable for high quality printings on small surfaces, both flexible and rigid, such as labels, films for medical and surgical devices, etc. The printing quality is achieved by means of a motorised flexographic inking unit that inks a cliché fitted on a sliding carriage. This carriage moves on guides and is driven by a pneumatic cylinder. Then, the inked cliché is pressed by another pneumatic cylinder against the substrate to be printed. The flexographic inking unit can be easily removed for cleaning. Programmable electro-pneumatic logic control.