The Zebra GK420t is a thermal transfer printer commonly used for label printing. When using the GK420t, you'll need to ensure you have the correct type of ribbon for your printing needs. Here are some key points to consider: Ribbon Types Thermal Transfer Ribbon: This is required for the GK420t to print on labels that need to last longer and resist fading. Wax Ribbons: Good for ge... https://theprintcartridgeshop.com.au/product/4-x-rolls-zebra-ribbon-for-gk420t-gx420t-gx430t-thermal-transfer-ribbon-wax-roll/