Original OEM Toner Lexmark CX431 K (20N20K0) (Black) is a dependable choice for customers who want crisp black text, sharp lines and professional-looking documents from their Lexmark laser printer—day after day.
Dear Customer, when you choose an original Lexmark toner, you choose consistency. This cartridge is engineered to work seamlessly with your device, helping keep print quality stable from the first page to the last, while supporting smooth operation and clean output—ideal for invoices, reports and everyday office printing.
With a yield of up to 1500 pages (calculated at 5% coverage), the Lexmark 20N20K0 toner lets us plan printing without surprises. It’s a practical capacity for home offices and small businesses that value predictable results and easy replacement, without sacrificing the deep, true black that makes documents look instantly more polished.
We also encourage you to check the “Related products” tab—there you’ll find matching color toners (cyan, magenta, yellow) and higher-yield options, plus compatible alternatives if you like to compare solutions. And of course, every parcel is carefully protected before transport, so your toner arrives safely and ready to install.
original OEM Lexmark quality and reliability;
up to 1500 pages yield at 5% coverage;
deep black prints with clean, professional detail
Popular printers that the product is compatible with: Lexmark CX431adw, Lexmark CX331ADW, Lexmark CS431dw.
Frequently asked questions about this product
Yes, at DrTusz.pl you’ll find high-quality replacements for original printer cartridges (ink and toner). These are DrTusz brand products that meet the highest quality standards and allow you to save up to 80% compared to original consumables.
All information regarding prices and product availability can be found on our website: www.drtusz.pl.
To find the replacement you need:
- Enter your printer model or the original cartridge’s part number in the search bar located at the top of the page, between DrTusz’s head and our logo.
- Then click on the product you’re looking for in the suggestions pane.
On the product page, you can check whether a DrTusz replacement is available for that original cartridge, as well as its price and availability.
Toner cartridges bearing the DrTusz logo are made from high-quality, specially selected, and tested components available on the market.They ensure high print quality, comparable to that achieved with original toner cartridges.
Toner replacements offer real savings; they are significantly cheaper than originals and often have a higher capacity, allowing you to print more pages from a single cartridge. High-quality compatible toners deliver crisp, long-lasting prints and work seamlessly with your printer, so you pay less without compromising on the final result.
Additionally, our compatible toner cartridges are covered by the “Gold Warranty” program, which provides coverage for the entire lifespan of the cartridge. Its key advantage is a quick, hassle-free, and effective claims process.
Bei der riesigen Auswahl an Tinten- und Tonerkartuschen kann man leicht den Überblick verlieren, und die richtige zu finden, ist nicht immer einfach.
Falls Sie die gewünschte Tinte/den gewünschten Toner nicht finden, senden Sie eine E-Mail mit Ihrem Druckermodell an sklep@drtusz.pl. Sie erhalten dann umgehend unser Angebot.
Alternativ können Sie sich auch persönlich von einem unserer Experten beraten lassen. Sie erreichen uns telefonisch unter +49 525-22-33-22 (Montag bis Freitag, 9:00–17:00 Uhr).
Our online store does not buy back empty cartridges
. We only offer free disposal of products that were previously purchased from our store.
Used ink and toner cartridges are hazardous waste and must not be disposed of in regular trash bins—that’s why we offer free disposal
so you can help protect the environment in a simple and safe way. For larger quantities of empty cartridges (10 or more), we’ll arrange for pickup by a courier after you contact us via email; for smaller quantities, you can return them to us at your own expense or bring them in person to our brick-and-mortar store.
Companies and public entities can also obtain a Waste Transfer Form (downloadable from the BDO system) if they generate more than 100 kg of such waste annually.
For details and instructions on how to return used cartridges for disposal, see the article:
Disposal at DoktorTusz
Yes, we accept empty cartridges (ink and toner), but only those purchased from our store.
✓10 or more empty cartridges
– please email us at sklep@drtusz.pl
. Once you’ve contacted us, we’ll arrange for a free pickup by courier.
✓Fewer than 10 empty cartridges
– please also contact us via email in advance. In this case, you’ll send the package at your own expense
to our company’s address.
✓Cartridges from other stores—
we do not accept them.
The process consists of the following steps: 1
. Arrange with us how to return the empty cartridges. 2. Fill out the waste transfer form (BDO):
you can fill out the document yourself on the BDO website (we only accept waste under code 160214).
3. Send the empty containers . 4. Upon receipt of the empty containers, we’ll confirm receipt in the BDO system.
Please note: if you do not generate more than 100 kg of such waste per year, the form is not required
.
