Ceramic decal.

A transfer printed on paper coated with a water-release adhesive and fired onto ceramic. Milestone Decals says its decals are generally applied as a third firing on an already fired glaze: wet the decal, slide it off the backing paper onto clean ware, squeegee out water and air, then fire, very slowly below 500 °F (260 °C). Its schedules include a "Digital Food Safe Decal Firing" at cone 019. It is not a sublimation print: no dye goes into a coating, and the image is a layer on the glaze. Milestone says non-metallic decals are somewhat translucent and recommends white or light ware to keep their density. Its document says nothing on mirroring, resolution or colour mode, so file rules have to come from the maker. On a dark mug the same artwork prints thin, and no change to the file corrects that.