Until recently, the majority of ID card printers used direct-to-card printing technologies like dye sublimation and thermal transfer in order to print the desired images onto blank plastic cards. While direct-to-card printing is useful and effective for many organizations, businesses that demanded higher security or more durable cards.
Reverse transfer printers like the Fargo HDP5000 first print the card's mirror image onto a piece of durable film (usually made from a material like mylar), which is then applied to the card so the correct image is facing out. The card's image is "sandwiched" in between the plastic card and the film. Like a laminated card, the durable reverse transfer film leaves the card less vulnerable to elements like friction - things that can quickly wear down normal cards. Reverse transfer printing also makes the card less susceptible to tampering and unauthorized reproduction, valuable features for businesses which demand high security.