ZXP Series 7, IX Series YMCKK Color Ribbon 750 Images/roll. The ribbon is used to print in a variety of colors on the front: yellow (Y), magenta (M), cyan (C), and black (K). The second (K) allows for printing in black on the back side of the card. The ribbon is used to print on both sides of the card. This ribbon is compatible with the ZXP Series 7 Printer.