The surprisingly high capacity genuine Ricoh 841820 contains enough cyan toner powder to grant you an estimated 18,000 prints. This high yield means that your cost per page is very low for an original Ricoh cyan toner cartridge, making the 841820 quite an anomaly in the industry.Each of these Ricoh 841820 toner cartridges is compatible with a wide range of four-colour laser printers including the MP C3504ASP. As the manufacturer, Ricoh offer a full warranty for the 841820 directly, meaning this purchase of a high quality cyan toner cartridge comes completely risk free.