Brother TN420 Toner Cartridges

Brother-TN420

Two codes, one cartridge system: the Brother TN420 (TN-420) is the standard yield and the TN450 (TN-450) is the high yield, and the printers on this platform accept either. Most listings here answer to both codes at once, because the fit is the same — only the fill differs. Both print through the separate DR420 drum unit. This page collects the singles, the multi-packs and the drum for the whole family.

This is one of Brother's most widely owned compact platforms — home-office printers, small multifunction machines and fax units that have been in daily service for years. That installed base is why the shelf is deep: cartridges here run from a single standard fill to a ten-cartridge stock-up set. If your machine is one of the models below, the code on the cartridge you pull out — standard or high-yield — is a choice, not a requirement, and this page lets you make it either way.

Toner Cartridges for TN420

Cartridge	Color	Page Yield
TN420 / TN450 Toner Cartridge Black	Black	See product page
TN420 / TN450 Toner Cartridge — 2 Black Set	Black	See product page
TN420 / TN450 Toner Cartridge — 3 Black Set	Black	See product page
TN420 / TN450 Toner Cartridge — 4 Black Set	Black	See product page
TN420 / TN450 Toner Cartridge — 5 Black Set	Black	See product page
TN420 / TN450 Toner Cartridge — 6 Black Set	Black	See product page
TN420 / TN450 Toner Cartridge — 10 Black Set	Black	See product page
TN450 Premium Toner Cartridge Black, High Yield	Black	See product page
TN450 Premium Toner Cartridge Black — 2 Pack	Black	See product page
TN450 TN420 Toner Cartridge — 5 Black	Black	See product page
TN450 TN420 Toner Cartridge — 3 Black	Black	See product page

Drum units and drum-and-toner combinations:

DR420 Drum Cartridge — the standard drum for this family.
DR420 Premium Drum Cartridge, High Yield — the premium-grade drum listing.
DR420 drum with TN420 / TN450 toner — one drum and one toner together.
DR420 drum with 2 toner cartridges and DR420 drum with 3 toner cartridges — bundles for a full refresh.

Which cartridge should you buy?

Decide by the code your printing habits have earned. The TN420 standard fill is the economical shelf item for a machine that prints a modest stack each week. The TN450 high yield is the same cartridge with more toner inside: fewer swaps, lower cost per page, and the natural choice for a shared office machine. Because every dual-code listing here fits either way, moving up a yield never means changing suppliers or relearning the machine. Bulk sets reward owners of several printers from this family — one stock of cartridges feeds them all.

Chip, toner and everyday use

The printer reads each cartridge's chip for its toner gauge, and on this platform the gauge is a planning tool: when it warns, you typically have a modest reserve of pages left, enough to finish the week while a replacement ships. Rated yields assume five percent page coverage, so a household printing full-page school projects will see fewer pages than a home office printing letters. Keep cartridges in their sealed wrap until installation day, and when you change one, keep the old drum in the machine — the DR420 is built to outlast cartridge after cartridge.

Frequently Asked Questions

My printer asks for a TN450. Will a TN420 work?

Yes. The two codes are standard and high-yield versions of the same cartridge design, and the printers here accept both. A TN420 will simply run out sooner than the TN450 the machine is used to.

Why do so many listings carry both codes in their names?

Because one physical cartridge serves both yield positions in this family, the dual-code listings are telling you the cartridge fits whichever code your printer names. Order by the yield you want; the fit is identical.

The print is fading but the toner was changed recently. What now?

Suspect the drum. The DR420 images every page, and a worn drum fades output no matter how fresh the toner is. The premium drum listing above is the higher-yield way to answer that message.

How big can a stock-up set get on this page?

The largest toner set here holds ten cartridges, and drum bundles pair one drum with up to three toners. Owners running several of these printers at once are the audience for those boxes.