ID Card Printer Ribbons, 5 Half-Panel Full Color (YMCKO) Ribbon, 400 images. The ribbon is used to print on half of the card in a variety of colors: yellow (Y), magenta (M), cyan (C), and black (K). The remaining overlay (O) provides an extra layer of protection for the card. This ribbon is used to print text and full color images on one or both sides of the card. Compatible with Primacy and Zenius ID Card Printers.