The Brother LC421BK is the standard capacity black cartridge for your printer and is the cheapest way to fuel your printer with genuine ink of this colour. Estimated to offer 200 prints, the Brother LC421BK is surpassed in size by the XL capacity original also available, but this cartridge is still great for infrequent printers. The black ink used by Brother for the LC421BK is some of the highest quality the manufacturer has ever produced too. With this in mind, we are more than confident you will enjoy using the Brother LC421BK in any of the top-quality inkjet printers we have listed as compatible on this page.