The best in class gx420d direct thermal printer offers the widest range of features and fast 6 inches per second print speed to meet all your low to medium volume printing requirements the gx420d has a sleek and compact design boasts the smallest footprint in a 4 inch desktop printer and supports a variety of applications and industries the gx420d comes standard with epl and zpl programming languages and triple connectivity for easy integration into existing systems for additional flexib