Ribbon, Full Color (YMCFKOK) Ribbon, 400 images. The ribbon is used to print in a variety of colors: yellow (Y), magenta (M), and cyan (C). The ribbon contains a fluorescing panel (F) which allows text or images to be visible only through the use of ultraviolet (UV) light. The (K) allows for black printing. The remaining overlay (O) provides an extra layer of protection for the card. The last (K) allows for black text to be printed on the back of the card. This ribbon is used to print text and full color images on the front and black on the back. For best imaging quality, recommended for use on UltraCard I (PVC) and UltraCard Premium (composite) cards only. Compatible with DTC4500, DTC4500e. This part is also known as 045212.