In sublimation printing, unique sublimation dyes are transferred to sheets of transfer paper via liquid gel ink through a piezoelectric print head. The ink is deposited on these high-release inkjet papers, which are used for the next step of the sublimation printing process. After the digital design is printed onto sublimation transfer sheets, it is placed on a heat press along with the substrate (keycap) to be sublimated.
In order to transfer the image from the paper to the substrate (keycap), it requires a heat press process that is a combination of time, temperature and pressure. The heat press applies this special combination, which can change depending on the substrate, to transfer the sublimation dyes at the molecular level into the substrate.
The end result of the sublimation process is a nearly permanent, high resolution, full color print. Because the dyes are infused into the substrate at the molecular level, rather than applied at a topical level, the prints will not crack, fade or peel from the substrate under normal conditions.
Only darker colors can be printed onto lighter colors. For instance, any color image or legend can be dyed onto a white keycap, while no color can be dyed onto a black keycap. Also keep in mind, that colors will most likely blend, meaning that if you were to dye a blue image or legend onto a yellow keycap, the image or legend will most likely end up green. Please keep this in mind when ordering your custom dyed keycaps.