Install a genuine OKI Image Drum in your OKI printer if you noticed diminished image output - it'll help renew print quality. As you use your OKI laser printer, waste toner and wear and tear on parts can lead to reduced quality and poor output. Installing a replacement imaging unit helps to renew your printer's mechanisms, leading to crisp blacks and vibrant colours. OKI printers use a separate image drum and toner cartridge, which helps to keep costs down and save money per page. This cyan image drum lasts for up to 20,000 pages.