These inks are general purpose and have been used in screen printing for many years. The can be used for spot printing and simulated process printing.
Discharge ink uses a heat activated, two-part ink to bleach the design portion of a garment to its original color and then re-dye the shirt with a new color. This process creates vivid color with almost no hand-feel. The design won't crack or fade like plastisol is prone to do over time.