This is a compatible Toshiba T1640 black laser toner cartridge guaranteed to perform with your Toshiba E-Studio 163/165/205 laser printers. It replaces the original Toshiba T1640 laser toner cartridge. The compatible replacement T1640 laser toner cartridges and supplies also known as generic are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet or exceed OEM Original Equipment Manufacturer standards for the T1640 and offer high-quality printing results. Manufactured 100% brand new, they are an economical alternative to expensive OEM T1640 Toshiba laser toner cartridges and supplies, and offer big savings over brand-name T1640 laser toner cartridges and supplies. The use of compatible replacement laser toner cartridges and supplies does not void your printers warranty.We offer a Two Year 100% Quality Satisfaction Guarantee on our compatible T1640 laser toner cartridges and supplies. LD Cartridges are manufactured in an internationally certified ISO 9002 factory. LD cartridges come with a 100% Two Year money back guarantee and technical support. For use in the following printers e-Studio 205, 165, 166, 163.