The Zebra 800077-749 YMCKOK Card Printer Ribbon is designed for dual-sided card printing applications requiring color on the front and black text or barcodes on the back. This ribbon features a four-color (Yellow, Magenta, Cyan, Black) panel for full-color printing on the card's primary side, followed by a protective topcoat overlay to enhance durability and extend card life. An additional black (K) panel allows for monochrome printing on the reverse side of the card, suitable for details like serial numbers, magnetic stripe encoding, or basic text.