Compatible Brother LC431 black Ink Cartridge Save with our compatible Brother Lc431 Black ink cartridge. Compatible, or generic, ink cartridges are ink cartridges made by a third party manufacturer. They are designed to work just as well as the original cartridges, and print the same number of pages, at a lower cost. They will not void your machine warranty (although printer manufacturers may refuse to repair a printer fault caused by using compatible cartridges). Brother Code: LC431 Black
