The surprisingly high capacity genuine Ricoh 841817 contains enough black toner powder to grant you an estimated 29,500 prints. This high yield means that your cost per page is very low for an original Ricoh black toner cartridge, making the 841817 quite an anomaly in the industry.Each of these Ricoh 841817 toner cartridges is compatible with a wide range of four-colour laser printers including the MP C3504SP. As the manufacturer, Ricoh offer a full warranty for the 841817 directly, meaning this purchase of a high quality black toner cartridge comes completely risk free.