Heat transfer, also known as heat printing, is the process of applying an ink that is similar to that used in screen printing. Screen printed garments have an ink that is applied to the garment through a screen. The ink is then dried, or cured, on the garment by passing through a large dryer.
With the heat transfer process, the ink is applied at the same time as the heat. The ink adheres to a carrier, which is often paper or plastic. When heat is applied to the carrier and the ink, the ink transfers from the carrier to the garment. Advances in this technology make heat transfer a very popular alternative to screen printing.
Some examples where heat transfers work great, include T-shirts, team uniforms, and corporate apparel.