Although it is considered a niche market in terms of size and demand as compared to other types of inks, screen inks have many different uses. From automobile instrument panels and labels on packages to personalized t-shirts and compact discs, screen inks are popping up all over the place. According to the Screenprinting and Graphic Imaging Association International (SGIA), the U.S. screen printing industry is valued at $60 billion, with more than 30,000 screen printers in operation throu...