High-quality MICR toner precision-matched to each specific printer for unparalleled performance and bank acceptance rates. TROY is the only HP MICR Partner providing OEM cartridges that will not void your printer warranty. Don't risk bank failure with remanufactured, refurbished, or clone cartridges. Formulated according to world-wide banking standards. Prevent check tampering and alteration with high-quality MICR Toner Secure. Contains a hidden red security agent. If chemical alteration is attempted a red stain will appear.