microMICR MICR High Yield Laser Toner Cartridge - Alternative for HP 138A, 138X (W1480A) - Black - 4000 Pages (MCMMICRTHN138X) EachToner cartridge with new MICR toner is designed for use with HP LaserJet Pro 3001dw, 3001dwe, MFP 3101fdw and MFP 3101fdwe. High yield cartridge contains magnetic image character recognition ink for security purposes in printing checks. It uses special MICR toner developed and tested specifically for each model printer, retaining the original components and keeping the OEM factory seal intact. Cartridge yields approximately 4,000 pages. General