Brother MFC-L8730CDW Toner Cartridges
Shop toner cartridges for your Brother MFC-L8730CDW, which uses the Brother TN645, TN645XL, TN645XXL toner cartridge series alongside the DR-645CL drum unit. Built for high-volume office workflows, this colour laser multifunction unit handles heavy daily document queues efficiently. Ink Depot has supplied genuine consumables for this printer since Aug 2026. Our 4.8 Google rating is built on dependable cartridge performance and uncompromising product quality. Upgrading to high-yield TN645XLBK black toner reduces replacement interruptions during busy print cycles.
Expected page output and replacement cycles
High-volume office environments benefit from high-yield options. Standard TN645 black cartridges deliver up to 3,000 pages, while TN645XLBK offers up to 5,500 pages. Colour toners range from 1,800 pages (TN645) to 4,500 pages (TN645XL), measured under ISO/IEC 19798 standards for colour laser printing.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| TN645BK | Standard | Black | 3,000 | $0.060 |
| TN645C | Standard | Cyan | 1,800 | $0.10 |
| TN645M | Standard | Magenta | 1,800 | $0.10 |
| TN645Y | Standard | Yellow | 1,800 | $0.10 |
| TN645XLBK | High Yield | Black | 5,500 | $0.042 |
| TN645XLC | High Yield | Cyan | 4,500 | $0.075 |
| TN645XLM | High Yield | Magenta | 4,500 | $0.075 |
| TN645XLY | High Yield | Yellow | 4,500 | $0.075 |
| TN645XXLBK | Extra High Yield | Black | 7,500 | $0.033 |
| TN645XXLC | Extra High Yield | Cyan | 6,500 | $0.069 |
| TN645XXLM | Extra High Yield | Magenta | 6,500 | $0.069 |
| TN645XXLY | Extra High Yield | Yellow | 6,500 | $0.069 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Managing drum unit replacements
The Brother MFC-L8730CDW uses an independent DR-645CL drum unit rated for approximately 30,000 pages, which operates separately from the toner cartridges. Experience Tip: After fitting a new DR-645CL drum unit, manually reset the drum counter through the printer touchscreen menu to ensure accurate life tracking.
Best way to stock these toner cartridges
For routine text documents, high-yield TN645XLBK cartridges provide lower page costs and extended output between swaps. Choosing four-colour multipacks helps maintain balanced stock levels across cyan, magenta, yellow, and black toners. Standard purchases are covered by our returns policy. Free delivery applies on all orders over $99. We ship directly from fast-dispatch warehouses located in Perth, Brisbane, Sydney, Melbourne, and Adelaide to ensure your office stays running. Explore our complete selection of Brother toner cartridges today.
Pro Tip
Always leave the printer powered on when replacing toner cartridges or the drum unit so the internal sensors correctly register the new consumable levels.
Frequently Asked Questions
Can I mix standard TN645 and high-yield TN645XL toner cartridges in the same printer?
Yes, you can freely mix standard TN645 and TN645XL cartridges across different colour slots. The printer handles each slot independently regardless of capacity.
Do I need to replace the DR-645CL drum unit every time I change toner?
No, the DR-645CL drum unit is rated for 30,000 pages and typically lasts through several toner cartridge replacements before requiring a swap.
What happens if I continue printing after a toner warning appears on the display?
The printer will continue printing for a short buffer period, but text or graphics density will eventually fade; keeping a spare TN645 or TN645XL on hand prevents unexpected workflow stops.
