Cartridges Unlimited’s Compatible Laser Toner Cartridges and supplies for Okidata B431d are designed to offer best print performance, dependability and consistent yields that meet or surpass Okidata OEM (Original Equipment Manufacturer) specifications for the Okidata B431d and offer high-quality output. These compatible toners are brand new and are a smart alternative to high-cost OEM Okidata laser toner cartridges, offering substantial savings over the Okidata B431d supplies.