canon cli451bk black ink cartridge is aimed at low volume users who would like to produce the sharpest black text, the crispest fine lines and the most detailed greyscale images. the construction of the canon cli-451bk black cartridge ensures clean and speedy printouts without compromising the promise on a low cost-per-page ratio. this means users can enjoy good quality documents and pictures without overspending. it is also formulated to be smudge and fade-proof for cleaner and more impressive pages.product features: brand: canonmodel number: cli-451bkcolor: blackdetails: produces sharp black text, crisp fine lines and detailed greyscale imagesclean and speedy printoutslow cost-per-page ratiosmudge and fade-proofbrand: canonmodel number: cli-451bkcolor: blackdetails: produces sharp black text, crisp fine lines and detailed greyscale image