Truecolors multi panel ribbons utilize heat to initiate a process called dye sublimation transfer in which the color dye on the ribbon is vaporized into a gas and infused onto the card at the printhead station several types of ribbon panel combinations are available some use a clear protective overcoat o panel which is applied to the entire card as the final printing step to protect the card imagethe 5 panel ribbon ymcko is designed for full color printing on one or both sides of a card