MICR toner cartridge is designed for use with HP LaserJet P2030 and P2050 series Intelligent Printers: P2035, P2035n, P2055d, P2055dn and P2055x. Cartridge contains magnetic image character-recognition ink for security purposes in printing checks. Smart print cartridge is estimated to yield 2,300 pages at 5 percent coverage.MICR toner cartridge is designed for use with HP LaserJet P2030 and P2050 series Intelligent Printers: P2035, P2035n, P2055d, P2055dn and P2055x. Cartridge contains magnetic image character-recognition ink for security purposes in printing checks. Smart print cartridge is estimated to yield 2,300 pages at 5 percent coverage.