Zebra GK420T The new Zebra G-Series desktop printers offer increased speed and performance. These compact printers support a variety of applications and environments. Choose from the direct-thermal GK420d or GX420d (offering the smallest footprint in a desktop printer) or the direct-thermal/thermal-transfer GK420t GX420t and GX430t for the easiest ribbon-loading system around. The GK offers standard print speeds of up to 127mm (5) per second and fast first label out. Co-existent EPL and ZPL programming languages are provided as standard. .