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Four black toner cartridges in white and blue packaging side by side

eSquareOne

eSquareOne S1-BR-TN420-04 toner cartridge 4-pack black high yield 2600 pages

SKU CH-WJRZ-1XNCG

Four-pack of compatible black toner cartridges replaces Brother TN420 and TN450, yielding 2600 pages each for a wide range of DCP, HL, MFC and IntelliFax printers

  • Cartridges included4 Pack
  • Ink or toner colorBlack
  • Estimated page yield2600 Pages
  • Print coverage5%
  • VariantTN420
  • Operating humidity range20 to 80% RH
  • High-yield output with 2600 pages per cartridge at 5% coverage
  • Four black cartridges replace Brother TN420 and TN450 originals
  • Compatible with Brother DCP and HL series printers including models 2240D 2270DW 7055 7057 7060D 7065DN 7070DW 2130 2132
  • Operates reliably from 10 to 32.5°C and 20 to 80% humidity
  • Engineered to meet quality and reliability standards for consistent prints

Four-pack replacement for Brother TN420/450

This four-pack of black toner cartridges replaces the Brother TN420 and TN450 originals. Each unit is an aftermarket compatible built to match the OEM form factor and page count. The set suits offices and home users who print regularly on supported Brother laser printers and want a ready supply of black toner.

Storage and operating ranges

Cartridges operate between 10 and 32.5 °C at 20 to 80 % relative humidity. They can be stored from -20 to 40 °C within the same humidity band. These ranges cover typical indoor environments without special climate control.

Yield of 2600 pages at 5 % coverage

Every cartridge yields approximately 2600 pages when printed at the industry-standard 5 % coverage. Buyers whose documents routinely exceed that coverage will see fewer pages per cartridge and should plan reorders accordingly.

How it compares

Measured against everything we stock in Compatible Laser Toner, at today’s prices. Recalculated every night.

Price $41.99
Cheaper than about 57% of the 15,190 comparable items (median $47.99).

Specifications

Product
Brand nameeSquareOne
Model nameS1-BR-TN420-04
Ink or toner colorBlack
Product typeCompatible
Performance
Estimated page yield2600 Pages
Print coverage5%
Compatibility
Replaces brandBrother
Replacement forBrother TN420 TN450
In the box
Cartridges included4 Pack
Environment & compliance
Operating humidity range20 to 80% RH
Storage humidity range20 to 80% RH
Operating temperature range10 to 32.5 °C
Storage temperature range-20 to 40 °C
More details
VariantTN420

Questions about this item

How do I install the eSquareOne S1-BR-TN420-04 cartridge in my Brother HL-2270DW, and what step do people often miss?

Open the front cover, pull out the drum unit, press the green lock lever to release the old cartridge, unpack the new one, gently rock it five or six times to distribute toner, pull the sealing tape straight out, slide the cartridge into the drum until it clicks, then reinsert the drum and close the cover.

What part will need replacement after using these four 2600-page cartridges?

The separate drum unit (Brother DR-420) will eventually need replacement after several toner cycles; the printer will signal when print quality drops.

What limit appears first during long print runs with these cartridges?

The operating temperature range tops out at 32.5 °C, so extended high-volume printing in a warm room can push the cartridge past its rated thermal limit before the 2600-page yield is reached.

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