MICR is an acronym for Magnetic Ink Character Recognition. The MICR printing process protects against fraud with specialized magnetic toner and standardized fonts. This printing technology allows banks to process business and personal checks by reading the magnetized type at the bottom of each check. MICR toner cartridges are laser toner cartridges with an added amount of iron oxide to ensure correct processing by banks and other financial institutions. The big name brands such as HP, Dell, Brother and Okidata do not manufacture MICR cartridges for check printing. MICR Toner International has a team of master engineers that create special blends of MICR toner for brand new printers, color printers and discontinued printers. We have the biggest selection of MICR toner cartridges in the U.S. and we custom make many of our MICR cartridges to hold twice or three times the normal capacity (we call these our Jumbo Yield). Doubling or tripling the amount of magnetic toner reduces the need to buy MICR toner cartridges as often and keeps waste out of our landfills.