challenger 173 multifunctional R&D sheet-fed printing and coating system The challenger 173 is designed to test and develop inks, coatings, substrates and printed electronics processes. The compact table top machine can be equipped with the following modules: Rotary screen, slot die coating, rotogravure, flexographic, gravure printing from plate and gravure offset. The printing modules can be exchanged quick and easy. It can print both flexible and rigid substrates up to 210x148x3 mm (DIN A5) in size with low ink consumption. Modularity: The challenger 173 is not only available as a complete multifunctional system but also as a single application. The machine can be extended at any time with other printing/coating modules. Quick and easy exchange of modules.