A Canon CLI-8BK ink tank is a printer cartridge that is part of the ChromaLife100 system. Using this ink with specific photo paper will give you stunning results that maintain their vibrancy and clarity for a long time. This black ink cartridge can be replaced as an individual unit without needing to replace any other cartridges (unless of course they have also run out). You can use the CLI-8BK black ink cartridge in a number of Canon printers including some PIXMA iP and MP models as well as the pro 9000 series.