A thermal transfer ribbon with a flexible substrate and, disposed above the substrate, a frosting ink layer. The frosting ink layer is present at a coating weight of from about 2 to about 15 grams per square meter and it contains from about 15 to about 94.5 weight percent of a solid, volatilizable carbonaceous...http://www.google.com.au/patents/US6629792?utm_source=gb-gplus-sharePatent US6629792 - Thermal transfer ribbon with frosting ink layer