Fired in a standard decal firing. The glaze on the tile has helped fuse it to a glossy surface. Has worked well except for adhesion problems during application (because the porous body adsorbed all the water immediately). If the tile had been soaked previously it would have been better.
This process of printing a design (using ceramic inks) onto a film coated decal paper, drying it, transferring the film on to the fired ware. But beware of a problem they do not mention.
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