This is an OEM replacement cartridge for the Hewlett Packard CC364A MICR (64A) black laser toner cartridge. MICR toners are specifically designed for printing professional checks, featuring a special iron in the toner that enables detection by bank scanning systems. The HP CC364A cartridge is engineered for reliability and quality, ensuring consistent performance with your HP printer. The use of this OEM cartridge does not void your printer's warranty.