This is the flash unit for our 16 color automatic screen printing machine. If a design uses more than one color it is sometimes necessary to flash the bottom colors. Flashing the ink causes it to gel on top. This gelling allows other colors to be printed on top with no problems. After the ink colors are all printed we run the shirt through a dryer/oven. This oven heats the entire item to 320 degrees and completely cures the ink. This makes the design permanent and the shirt is ready to wash and wear.