MICR Toner Cartridge for Hewlett Packard LaserJet 4300, 4300n, 4300tn, 4300dtn, 4300dtns, 4300dtnsl printers. This cartridge is not generic or remanufactured. Genuine-New MICR cartridges contain all original OEM components while utilizing a specially formulated MICR toner developed to meet all US and Canadian banking standards. The toner inside of a MICR Print Solutions cartridge also contains a security feature that helps to virtually eliminate the risk of check fraud. MICR Print Solutions Genuine-New MICR products provide superior performance and is an excellent alternative to high-priced OEM products.