ID card printers typically use ribbons that are made up of different panels for printing colors and providing other functions. Panels are typically identified by a letter or two with the most common dye sublimation panels being:
- Y = Yellow dye sublimation panel
- M = Magenta dye sublimation panel
- C = Cyan dye sublimation panel
- K = Black resin panel (K = Key = Black)
- O = Overlay panel
