When printing garment dyed shirts, it is recommended to use inks and methods that avoid dye migration. Dye migration occurs when the dyes applied to the fabric move off the surface of the fabric into the inks applied. Testing for dye migration is always recommended. Most manufacturers have inks that prevent dye migration. We advise that you use them as necessary. Since there are many colors, many weather conditions, a variety of types of dryers and flashes, and artwork changes, there is no one “right” way to print these garments. In some cases a “low bleed” formulation will be effective, if problems still persist you need to use a dye blocking grey ink. In general use as little heat as possible while still curing the ink,
that is both in terms of flashing and in your oven. In certain cases a longer flashing or drying time and lower heat levels are recommended. Additionally, the soft fibers of the shirts shorten the adhesion time to your platens. In order to maintain registration, reapplication of adhesive may have to be done more often.