In sublimation printing technology, a special ink is transformed by heat from a solid directly into a gas (a process called sublimation) without passing through a liquid phase. The printer itself first prints the motif with these inks on transfer paper. Then, using a heat press, the ink is released from the paper as a gas and permanently bonded to the surface of the final material, such as textiles, ceramics, specially treated plastics or promotional items. The dye thus penetrates directly into the surface structure, not just onto it. The result is a permanent, mechanically resistant and colour-saturated print that is very popular for the production of printed T-shirts, mugs, mobile phone covers and other items. This technology requires the use of special sublimation inks and materials with a polyester-based surface or a special polymer coating.