The Brother LC1240 BK Black Ink Cartridge for MFCJ6510DW/6710/6910 printers is an original Brother ink cartridge, with water-based ink specifically formulated for the brand's inkjet printheads, guaranteeing true colors and crisp text in both documents and photos printed at home or in the office. It comes in a sealed package ready to install, requiring no shaking or preparation before use, and has a built-in chip that allows the printer to monitor the ink level and provide advance warning when it is running low. It is suitable for replacing the original cartridge as soon as the printer indicates a need for refilling, maintaining print quality over time. This black version is compatible with Brother MFC-J6510DW, MFC-J6710DW and MFC-J6910DW multifunction printers, and is suitable for regular printing of black and white text and documents on these A3 format models.