Brother LC421BK ink cartridge 1 pc(s) Original Black

The Brother LC-421BK Black ink cartridge provides original OEM ink formulated for sharp black text and consistent grayscale images. Designed for use in compatible Brother inkjet printers, this black cartridge supports everyday document printing with reliable output. The cartridge offers an estimated page yield of approximately 300 pages under standard test conditions and is intended for home and small office environments where frequent replacement is undesirable.

Advantages

This original Brother cartridge delivers clear, legible text and steady tonal quality across print jobs. Its design ensures straightforward installation and secure seating in compatible printer models, reducing the risk of leaks or misfeeds. Using the manufacturer’s ink preserves printer maintenance routines and color consistency while helping to avoid printhead clogging associated with incompatible consumables.

Suitable for

• Everyday black-and-white document printing at home
• Office reports, invoices and correspondence
• Small-batch printing where consistent text quality is required
• Replacing depleted black cartridges in compatible Brother printers

Key specifications

• Ink colour: Black
• Type: Original manufacturer cartridge
• Estimated page yield: approximately 300 pages (standard test conditions)
• Intended use: Inkjet printers

How to use

Remove the used cartridge according to your printer’s user manual, then unpack the new Brother LC-421BK cartridge and remove any protective seals. Insert the cartridge into the correct slot until it clicks into place, close the printer cover, and allow the printer to perform any automatic initialization or alignment. For best results, run a nozzle check and print a test page to confirm proper installation and print quality.

Recommendations

Store unused cartridges in a cool, dry place and keep them in their original packaging until installation. Use the cartridge regularly or run occasional head-cleaning and nozzle-check procedures to maintain print quality. Replace the cartridge once print density or text clarity declines to ensure consistent black output.