(51640A) HP No. 40 ink cartridge black 42ml (Dye) No.40 The HP 40 Black Inkjet Print Cartridge is ideal for business or home users who want professional-quality copies and printouts. The HP 40 is a 300 dpi black ink cartridge that delivers the highest possible print quality using pigmented ink to produce crisp, sharp characters on most bond/copier papers, and is made to work with HP colour inks. The print cartridge contains genuine HP ink that provides quality and reliability every time you print. Compatible with HP Designjet 230, 250, 330, 350, 430, 450, 455, 488, 650, 1200 Printer series.