• MICR toner cartridge is designed for use with Hewlett-Packard LaserJet 4200 series Intelligent Printers: 4200, 4200n, 4200tn, 4200dtn, 4200dtns, and 4200dtnsl • Cartridge contains magnetic image character recognition ink for security purposes in printing checks • Smart print cartridge is estimated to yield 12,000 pages at 5 percent coverage