Personalized Mugs Sublimation printing provides an excellent alternative to screen printing. Sublimation printing is an offset printing process which utilizes special dyes. These dyes are printed on paper and transferred onto various substrates using heat transfer equipment. The heat expands the molecules of the substrate and changes the dyes into a vapor which penetrate the material. Through this process the graphic actually becomes part of the substrate and, unlike screen printing, this will not change the feel of the material.