Also referred to as sublistatic printing, heat transfer is the technique of printing fabric by transferring a printed design from paper to fabric by way of heat and pressure.
The printed image is placed against the desired substrate (commonly a fabric, such as a T-shirt) and subjected to high temperature (commonly 375ºF) and pressure (60 pounds) for a short period of time (12.15 seconds is common). After the substrate has cooled, the release paper is peeled away and the image will have been transferred to the substrate.
This method is best used on flat soft cloth surface products such as shirts, polos, jackets, and more.