True Color Toner DR221BK Black Drum Unit 12000 Pages

Compatible Black Drum Unit

The True Color Toner DR221BK is a new aftermarket drum unit built to replace the Brother DR-221 original. It fits colour laser printers including the HL-3140CW, HL-3150CDN, HL-3170CDW, HL-3180CDW, MFC-9130CW, MFC-9330CDW and MFC-9340CDW models. Offices and home users who print regularly on these devices receive a direct OEM alternative. The single black cartridge installs in the standard drum slot without modification.

Standard Yield and Coverage Limit

Rated at 12000 pages at five percent coverage, the unit follows the industry standard measurement for drum life. Actual output will drop when printing dense graphics, full-page photos or heavy text blocks that exceed the reference coverage. The drum is a consumable imaging component, not a toner supply, so print quality degrades gradually as the photoconductor surface wears. Users tracking page counts should plan replacement around the rated yield.

Replaces OEM Drum Unit DR221BK

This cartridge replaces the Brother DR221BK drum unit when the printer signals end of life or when output shows streaks, fading or repeat defects. The upgrade is worth it when the existing drum has reached its rated cycle and a lower-cost compatible restores full print quality. It is not for buyers who need a toner refill, a colour drum set or a higher-capacity drum rated beyond 12000 pages.