The Samsung MLT-D307S Toner Cartridge (Black) is specifically designed for fast monochrome laser printing. This original black Samsung MLT-D307S/ELS printer cartridge contains polymerized toner for crisp text and image quality. With small, uniform toner particles, the black Samsung MT-D307S toner gives you a high print resolution and glossy finish for professional quality documents. By transferring toner to the page in a thin layer, the black Samsung MLTD307S toner reduces waste and lowers toner consumption to be more economical. Ideal for an office environment, this black Samsung MLT-D307S toner cartridge has a capacity of approximately 7,000 pages.