Lexmark provides the Fax/MFP Black Print Cartridge to support select Samsung Fax/MFP machines. All Lexmark inkjet cartridges have the actual print head, there where the core inkjet technology lies, integrated to the cartridge bottle. The main advantage to having the print head as an integrated part to the cartridge is that Lexmark customers get a new print head with each cartridge replacement! This is each time like getting a brand new printer all over again! No risk of deterioration of the print head (and therefore a decrease in quality) during the life of the printer as can be the case with other manufacturers who integrate the print head as a fixed part inside the printer itself.¤¤This product is designed for Samsung Series SF3000, 3100, 3100P, 4000, 4100, 4200.