The Zebra 800033-347 Half-Panel Color Ribbon 400 images per roll, (YMCKO) Ribbons are an economical solution for personalizing pre-printed or blank cards. The ribbons contain half-sized yellow (Y), magenta (M), and cyan (C) panels, a full-sized resin black (K) panel, and a full-sized overlay (O) panel. Half-panel ribbons are ideal for printing a color photo or graphic (34mm maximum length), plus a black bar code, image or text anywhere on the card surface. The full-sized overlay (O) panel covers the entire card surface to protect all printed information.