M404/M428/M406 MICR Toner Secure CartridgeWe always start with an original, brand new, HP toner cartridge. We then upgrade the standard toner with TROY MICR Toner Secure, which is The World's Most Fraud Resistant MICR Toner - it bleeds red when chemical alteration is attempted! Starting with an original HP cartridge is vital to the security, quality, and reliability that our customers depend on.M404/M428/M406 MICR Toner Secure CartridgeWe always start with an original, brand new, HP toner cartridge. We then upgrade the standard toner with TROY MICR Toner Secure, which is The World's Most Fraud Resistant MICR Toner - it bleeds red when chemical alteration is attempted! Starting with an original HP cartridge is vital to the security, quality, and reliability that our customers depend on.