If your office has a need for magnetic ink recognition printing (MICR), rather than purchasing a separate printer with the capability, you may be able to upgrade. MICR is the set of characters and symbols you see on financial institution documents and bank checks. HP printers can use the Troy font and toner kit to perform MICR type functions like printing checks or other financial documents. You can also switch back and forth between printing standard documents and those which require MICR printing. The kit essentially provides you with the software for the necessary fonts, as well as a toner cartridge. The Troy font and toner kit for HP printers is appropriate for schools, financial institutions and the publishing industry.