Print magnetic characters for documents that must pass through magnetic character recognition equipment. The MICRO MICR MICR-THN-148AM uses black MICR toner in the HP W1480A cartridge format, placing it in LaserJet Pro environments that need a dedicated supply for check printing and other controlled document workflows. It is not a general-purpose color supply; its role is black, machine-readable character output. Install the cartridge in compatible HP LaserJet Pro 4001-series printers or MFP 4101-series multifunction printers that use the W1480A format. Those platforms suit offices that print checks, remittance documents, or other records where MICR characters must remain legible to both people and reader equipment. The cartridge provides an approximate 2,900-page yield, allowing capacity planning around the standard-yield supply format. The defining distinction is the magnetic toner formulation, rather than a standard black toner composition. MICR-THN is the product model designation, while the -148AM suffix identifies the orderable form. Match the printer's supported supply format to HP W1480A before installation, especially when a site also uses non-MICR black cartridges for ordinary office printing. This separation helps reserve MICR output for documents that require magnetic character recognition.