Performance and Compatibility. Guaranteed. Datamax-O’Neil Printer Supplies is the only provider of seven grades of thermal paper specifically designed for your Datamax-O’Neil printer, ensuring optimum performance... Guaranteed! We cut and core our own paper to exacting specifications in order to ensure total compatibility. These 7 Grades of papers are designed to fit any thermal application in nearly any environmental condition. Depending on the paper selected, our grades have up to a 25-year archiveability rating under proper storage conditions. The world's most reliable printers deserve the most reliable paper. When you choose Datamax-O’Neil, you receive Datamax-O’Neil’s commitment to superior quality.