OKI 46507416 is a drum unit that is made by the OEM (Original Equipment Manufacturer) for the C712 Series of printers by OKI. This drum unit has photosensitive technology that helps produce the toner image when the printer is printing. When printers do rainbow printing, they need 4 different drum units (1 cyan, 1 magenta, 1 yellow, and 1 black) together to complete the rainbow image. The drum unit provides an even quality and continues to give high-quality text with accurate colour registration.

Each drum unit normally lasts for up to 30,000 pages, so they are an important consumable part of any printer. At the end of the life cycle of the drum unit, the printer should be replaced with a new drum unit in order to achieve maximum performance of the printer and avoid print defects such as streaks and/or faded print.