A Zebra KdO ribbon is used for printing monochrome cards with a clear overlay. The black “d” stands for dye sublimation so two different printing processes are used with KdO ribbons—dye sublimation for the black panel and thermal transfer for the clear overlay. The dye sublimation process allows you to print on a grey scale, creating shading and shadows and are great for printing black and white images or logos. The Overlay panel provides a thin layer of clear protection which helps with fading and normal wear and tear.

If you are printing barcodes, we recommend the use of a KrO ribbon which prints lines and text more crisply (without any shadows).