The Original OKI 42804515 Cyan Toner Cartridge benefits from using OKI`s oil-less Toner formula ensuring high quality elegant images where the quality doesn`t fade. The OKI 42804515 Toner Cartridge has a page yield of 3,000 (based on a 5% coverage) making it ideal for use in the home or small business. This Genuine OKI 42804515 Cyan Toner Cartridge is guaranteed to work in harmony with your OKI C3100 Printer, as it is a brand new product designed and manufactured by OKI themselves. The 42804515 comes as a separate consumable to the Drum Unit meaning lower running costs as you can usually achieve more from the Cartridge.