MTI MICR CF280A (HP 80A) AssureScan MICR Toner Cartridge for Check Printing with HP LaserJet Pro 400 Printers MICR Toner International cartridges are built using brand new parts and materials for quality you can trust. NONE of our products use RECYCLED/RENEWABLE materials. Magnetic toner for check printing Color: Black. Yield: 2,700 OEM Part #: HP CF280A MICR Toner International AssureScan MICR toner is formulated to be scan by all U.S. national, regional, local and international financial institutions.