Disclosed in this specification is a decal assembly comprising a decal support, a releasable covercoat, a heat activatable layer, and an ink layer. The ink layer forms a digital image. The heat activatable layer has a high adhesion to a ceramic substrate at high temperatures and a low adhesion to the...http://www.google.de/patents/US7507453?utm_source=gb-gplus-sharePatent US7507453 - Digital decoration and marking of glass and ceramic substrates
