Like many entrepreneurs before them, Bill Henderson and Barry Vandiver decided to start their own business. Their company, Signal Printing Ink, a Chattanooga, TN-based sheetfed and forms ink specialist, has faced some challenges since it was founded 22 years ago, but its deserved reputation for quality and service have led to success for the company. “In 1984, Barry and I worked for another ink company and we decided that if we were going to work that hard, we should do it ...