What is it?
How is it done?
In thermography, the design is printed on the sheet and the sheet is then passed under a powder funnel that sprinkles a powder-like substance on the sheet. The sheet is then passed under a heated oven that fuses the powdered particles to the wet printing ink, and a high-powered vacuum is used to remove the excess powder. The fused mixture creates the “raised” appearance when the mixture hardens.