This ink-side-out ribbon features an open 1 in. core for compatibility with a wide variety of thermal transfer printers. One-color ribbon for printing a single color onto a label R4300 Series Ribbons offers strong environmental resistance against smearing and chemicals when printed on the appropriate Brady label material Recommended for printing on paper and films that have a matte or rough surface, such as B-427 Self-Laminating Vinyl and B-499 Nylon Cloth from Brady Combine Brady label materials with their recommended ribbon series for superior legend performance