Thermal Transfer Ribbon is used in Thermal Printers to transfer ink onto a substrate such as a label. It consists of a plastic film with a few different layers (including the back, base, release & ink layers). Printing with thermal transfer ribbons generally provides a more permanent print than with direct thermal printing, depending on the type and grade of ribbon. The main types of thermal ribbons are Wax Only, Wax-Resin, and Resin Only.