Busymom Baking posted:
I am having these printed for me from a local bake shop so I do not know what brand of ink they are using. I thought it had something to do with the butter fat bleeding through the sugar sheet. I am going to reapply the image on top of a thin sheet of fondant and see if that helps. Are you aware of some sugar sheets that are better than others?
I don't know - I don't print on sugar sheets often enough but some are very thin and sheer; others are not. I'd go with what @Econlady says on this. I'm not sure about your butter fat theory though, as it doesn't sound like you had the sheets directly up against the cookie and there's no butterfat in royal icing or fondant. I'd be hard-pressed to believe the fat is leaching all the way through the cookie and icing into the paper. More like the paper absorbing the coloring in a strange way, or the coloring fading.
I'd ask the supplier what brand of coloring and paper they use, just out of curiosity. And to compare to Econlady's Lucks suggestion.