When put through a direct thermal printer, a second color image is printed, highlighting information such as purchase order numbers, price or delivery instructions. Can print in purple, blue or green. Compatible with all direct thermal printers.
Thermal ink coating
DualTone(TM) from Wallace Computer Services, Inc. (Hillside, IL) is a patent-pending, colorless coating for two-color printing on direct thermal label and tag stock.
Jun 30th, 1995