Brother MFC-8860N Toner Cartridges
Shop toner cartridges for your Brother MFC-8860N, which uses the Brother TN-3145 and TN-3185 toner cartridge series along with DR-3115 drum units. Ink Depot has been supplying reliable consumables for this printer since Jun 2006. Designed as a high-speed monochrome multifunction laser for busy workgroups, it benefits greatly from high-yield consumables. Upgrading from standard TN-3145 to high-yield TN-3185 cartridges substantially lowers replacement frequency during heavy document output. Our 4.8 Google rating reflects a long-standing track record of premium cartridge performance.
Expected Page Output and Replacement Cycles
Page yield measurements follow the ISO/IEC 19752 standard for Black toner cartridges under standard five percent page coverage. Actual output varies based on text density, print job length, and document complexity in routine office environments.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| TN-3145 | Standard | Black | 3,500 | $0.050 |
| TN-3185 | High Yield | Black | 7,000 | $0.035 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Choosing Between Genuine and Compatible Options
For office environments aiming to reduce running costs, compatible toner supplies significant savings without compromising text sharpness. Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Compatible options supplied by Ink Depot come backed by a complete satisfaction guarantee. You can read our detailed guide on genuine vs compatible cartridges to determine which product type best matches your operational demands.
Drum Units and Separate Consumables
The Brother MFC-8860N uses an independent drum assembly alongside the toner cartridge. While toner is consumed during daily document production, the drum unit transfers the image onto the paper and wears at a much slower rate.
Experience Tip: The DR-3115 drum unit has a rated lifespan of 25,000 pages and typically outlasts three to four TN-3185 high-yield toner cartridges before requiring replacement.
Best Strategy for Stocking Replacement Toner
High-volume office printing relying heavily on text documents benefits most from high-yield TN-3185 cartridges or multi-cartridge bundles. If choosing budget-friendly compatible cartridges, our products carry a full money-back guarantee for complete peace of mind. Free delivery applies on all orders over $99. We despatch quickly from regional distribution centres in Sydney, Melbourne, Brisbane, Perth, and Adelaide. Browse our full range of Brother toner cartridges or review our returns policy for additional ordering information.
Pro Tip
High-yield TN-3185 cartridges fit into the exact same drum housing as standard TN-3145 cartridges while yielding twice the page capacity, effectively halving cartridge installation frequency during high-volume print runs.
Frequently Asked Questions
Why does my drum warning stay on after replacing the toner?
Toner cartridges and drum units are entirely distinct physical components in this printer system. Replacing a depleted TN-3185 toner cartridge restores the ink supply, but it does not reset or replace the DR-3115 drum unit, which tracks its own 25,000-page operational counter.
Can I switch between standard TN-3145 and high-yield TN-3185 toners freely?
Yes, both cartridge sizes share identical exterior dimensions and latch into the same DR-3115 drum frame. The TN-3185 simply holds more toner powder internally, providing a lower cost per printed page.
How do I know when to replace the DR-3115 drum unit rather than the toner cartridge?
A depleted toner cartridge triggers an explicit toner low alert or causes text to fade uniformly across the page. In contrast, a worn drum unit usually produces repeating vertical lines, dots, or faint background grey shading while toner levels remain sufficient.
