This is a remanufactured cartridge for the HP CE390X MICR black laser toner. Designed specifically for printing professional checks, this toner features a special iron that allows the check to be detected by bank scanning systems. The remanufactured HP 90X cartridge contains up to 85% new parts, including wiper blades and OPC drums, ensuring high-quality prints. It serves as an economical alternative to expensive OEM cartridges without voiding your printer warranty. Backed by a 100% Quality Satisfaction Guarantee.