Brother TN-3420, TN-3440, TN-3470 Toner Cartridges
Brother TN-3420, TN-3440, and TN-3470 toner cartridges provide scaling capacities across standard, high, and extra-high yields to protect high-volume office workflows from frequent downtime. Genuine components preserve system longevity, while premium compatible alternatives and multi-packs drastically drop operating outlays across matching mono laser setups. Our 4.8 Google Star rating shows that our customers consistently receive high-quality cartridges backed by reliable performance.
Printers Compatible with Brother TN-3420 & TN-3440 & TN-3470 Toner Cartridges
Expected page output and replacement cycles
Brother determines standard page yields under continuous printing conditions matching the ISO/IEC 19752 mono testing framework. The standard TN-3420 cartridge delivers 3,000 pages, the high-yield TN-3440 expands production to 8,000 pages, and the extra-high-yield TN-3470 provides a 12,000-page limit to reduce physical intervention cycles.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| TN-3420 | Standard | Black | 3,000 | $0.058 |
| TN-3440 | High Yield | Black | 8,000 | $0.037 |
| TN-3470 | Extra High Yield | Black | 12,000 | $0.027 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
What to know about compatible cartridges
Deploying compatible TN-3440 toner cartridges cuts upfront procurement costs substantially compared to genuine retail alternatives. Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. These third-party options feature upgraded chips to communicate print data accurately, and you can review full legal protections in our genuine vs compatible cartridges breakdown.
Best way to stock these cartridges
Enterprise environments running continuous print streams lower their printing costs below one cent per page by migrating from standard 3,000-page cells to the 12,000-page TN-3470 variant. Selecting compatible dual-packs further minimises transaction overheads and includes a complete money-back guarantee to eliminate performance risk. If an incorrect cartridge number is ordered, fast rectifications are provided via our Returns policy infrastructure.
Dispatches originate daily from local storage hubs across Sydney, Melbourne, Brisbane, Adelaide, and Perth to minimise transit distances. Free delivery applies on all orders over $99 (conditions apply). To source specific parts for other office hardware, browse our direct Brother toner cartridges index page.
Pro Tip
The physical outer frames of the TN-3420, TN-3440, and TN-3470 are identical. Your printer automatically identifies the cartridge yield size via an internal side-gear mechanism rather than checking optical sensors, which allows high-volume offices to scale up to the 12,000-page variant instantly without updating components.
Frequently Asked Questions
Why does my printer display a "Replace Toner" warning when the cartridge still has physical powder inside?
Brother mono laser printers estimate toner exhaustion by counting gear rotations rather than measuring remaining powder mass. If you primarily print short text lines or small labels, the rotation counter will trigger a premature end-of-life error, which you can clear by opening the front door, holding the Secure Print and Cancel buttons simultaneously, and choosing the manual reset option for your specific cartridge size.
Will the extra-high-yield TN-3470 cartridge fit into a basic HL-L5100DN printer?
Yes, the HL-L5100DN accommodates all three cartridge sizes seamlessly. The internal receiving bay across the entire seven-device compatibility list features uniform slot parameters, meaning the high-capacity internal reservoirs do not require an external adapter or a larger machine footprint.
Why are my printed pages showing ghosted text images from previous lines?
Ghosting indicates that the separate drum unit has exceeded its electrostatic threshold and is failing to discharge fully, or loose powder has contaminated the fuser rollers. If wiping the built-in corona wire slider back and forth does not resolve the shadow images, the drum unit has likely completed its 50,000-page duty cycle and must be replaced independently of the toner cartridge.
