Evaluated Alternative Diamond like Carbon coating technology for Gravure cylinders or Anilox rollers High-tech coatings for Gravure and Anilox Roto Hybrid's Diamond like Carbon technology is an environmentally friendly alternative to both Chromium VI and Chromium III, traditionally used in RotoGravure and further specialist options are available that replace the Ceramic (chromium oxide) used for Anilox in Flexo.