Inkjet cartridges are small containers filled with liquid ink used in inkjet printers. They come in various colors, typically including black, cyan, magenta, and yellow, allowing for a wide range of color printing. Each cartridge is designed to fit specific printer models and can be replaced when the ink runs out. These cartridges work by spraying tiny droplets of ink onto paper to create text and images. Some cartridges are refillable, while others are disposable. Proper maintenance and timely replacement of inkjet cartridges can help ensure high-quality prints and prolong the life of the printer.