The Canon CLI-581BK is a genuine black ink cartridge designed for compatible PIXMA printers. Its pigment-based ink delivers dense, stable blacks, particularly well-suited for text documents that require high legibility. With 5.6 ml of ink and a stated yield of 200 pages, it provides reliable everyday performance. Manufacturer part number 2106C001, it is compatible with a wide selection of PIXMA models: TR7550, TR8550, TS6150, TS6151, TS8150, TS8151, TS8152, TS9150, and TS9155. Choosing a genuine Canon cartridge ensures uncompromising integration with your equipment.