The Sanford Ink Company released its first wet erase marker for overhead projectors in 1965 with the product name Vis-à-Vis. Eleven years later, the company launched its first Expo-branded dry erase marker lines in black, red, blue and green colors with a chisel tip. Since then, Sanford has expanded the Expo brand to include fine point, ultra fine point, and bullet tip variations a well as new ink colors.