Toner Brother TN421BK 3000 stran černý

The Brother TN421BK black toner cartridge is an original consumable designed for Brother laser printers. It produces high-resolution monochrome documents and maintains consistent print quality throughout its life. With an approximate yield of 3,000 pages, this TN421BK cartridge is suitable for regular home and office printing needs and matches the printer specifications for reliable results.

Advantages

The genuine Brother TN421BK cartridge ensures sharp text and clear monochrome graphics while offering a predictable page yield of up to 3,000 pages. It is manufactured to meet Brother compatibility and installation standards, providing straightforward replacement and consistent output without additional setup.

Suitable for

• Everyday black-and-white document printing
• Office reports, invoices and correspondence
• Home printing tasks requiring reliable monochrome output

Key specifications

• Brand compatibility: Brother
• Model / MPN: TN421BK
• Colour: Black
• Yield: up to 3,000 pages (approx.)
• Quantity per pack: 1 pc(s)
• EAN: 4977766771535

How to use

Turn off the printer if recommended by the user manual, open the front cover, remove the used cartridge by pulling it straight out, and unpack the replacement TN421BK. Remove any protective seals, align the cartridge with the guides inside the printer, and slide it into place until it locks. Close the cover and follow any on-screen instructions to resume printing. Refer to the printer manual for model-specific guidance.

Recommendations

Store the TN421BK cartridge in a cool, dry place away from direct sunlight. Use the cartridge before the manufacturer’s recommended storage period for best results and handle the toner carefully to avoid spillage when replacing.