Do it Wiser Compatible Toner For Ricoh Aficio MP C3001 MP C3501-841578 - 22,500 Pages - Black Estimated page yield: 22,500 pages (depends on printer and usage) Compatible with part number: Ricoh 841578 Suitable for printer models: Ricoh Aficio MP C3001 MP C3501, Lanier LD630C, Lanier LD635C, Savin C9130, Savin C9135. Our Do it Wiser smart toner cartridges are covered by a 1 year warranty against defects Cartridges certified to work | ISO 9001 quality assurance | ISO 14001 environmental management | RoHS Lead Free 1 Blackcartridge 22,500 pages Ricoh Aficio MP C3001 / 3501 Lanier LD630 / 635 Savin C9130 / 9135