Lexmark CS521dn Toner Cartridges
Shop toner cartridges for your Lexmark CS521dn, which uses the Lexmark 78C6U and 78C6X toner cartridge series along with 78C0W00 waste toner bottles, 78C0ZK0 black imaging units, and 78C0ZV0 colour imaging units. Opting for 78C6UKE ultra high yield black toners keeps cost per page low during continuous print runs. Our 4.8 Google rating proves it: we consistently supply premium cartridges backed by rock-solid reliability.
Expected Page Yield and Cartridge Performance
Page yields for 78C6U and 78C6X toner cartridges are measured in accordance with ISO/IEC 19798 testing standards based on 5% page coverage. High-volume office environments will achieve lower per-page costs by choosing 78C6U ultra high yield toners, which provide up to 10,500 black and 7,000 colour pages.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| 78C6UKE | High Yield | Black | 10,500 | $0.027 |
| 78C6UCE | High Yield | Cyan | 7,000 | $0.066 |
| 78C6UME | High Yield | Magenta | 7,000 | $0.066 |
| 78C6UYE | High Yield | Yellow | 7,000 | $0.066 |
| 78C6XKE | Extra High Yield | Black | 8,500 | $0.032 |
| 78C6XCE | Extra High Yield | Cyan | 5,000 | $0.067 |
| 78C6XME | Extra High Yield | Magenta | 5,000 | $0.067 |
| 78C6XYE | Extra High Yield | Yellow | 5,000 | $0.067 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Imaging Units and Waste Toner Supplies
The Lexmark CS521dn utilises separate long-life components to maintain print clarity over time. The 78C0W00 waste toner bottle collects unfused particles across a 25,000-page lifespan, while the 78C0ZK0 black imaging unit and 78C0ZV0 colour imaging unit handle image transfer. Experience Tip: The 78C0ZK0 and 78C0ZV0 imaging units feature a rated lifespan of 125,000 pages, lasting through multiple toner cartridge replacements before requiring swapping.
Choosing the Right Cartridge Setup & Delivery
If you print mainly text documents, choosing the 78C6UKE ultra high yield black cartridge provides maximum efficiency. If you print colour graphics or reports, value bundle packs offer a practical solution to keep all colours stocked. Free delivery applies on all orders over $99, with fast dispatch from our nationwide distribution centers located in Perth, Brisbane, Sydney, Melbourne, and Adelaide. Check our returns policy for full peace of mind when ordering your genuine Lexmark toner cartridges.
Pro Tip
Lexmark extra high yield (78C6X) and ultra high yield (78C6U) cartridges use the same internal installation slots as standard capacities, so you can upgrade to higher page yields without needing extra printer accessories or modifications.
Frequently Asked Questions
How do 78C6U ultra high yield cartridges compare to 78C6X extra high yield cartridges?
Both series fit the Lexmark CS521dn printer seamlessly, but 78C6U cartridges hold more toner. The 78C6UKE black yields up to 10,500 pages compared to 8,500 pages in the 78C6XKE, offering a lower cost per printed page for busy offices.
When should I replace the 78C0ZK0 or 78C0ZV0 imaging units?
The Lexmark CS521dn will notify you on screen when an imaging unit approaches the end of its 125,000-page lifecycle. Replacing these separate components only when prompted prevents unnecessary expenditure while keeping your print quality sharp.
What happens when the 78C0W00 waste toner bottle is full?
The waste toner bottle collects residual toner during normal printing cycles and is rated for approximately 25,000 pages. Once full, the CS521dn pauses printing until a fresh 78C0W00 bottle is installed to prevent internal toner accumulation.
