Brother MFC-J6720DW Ink Cartridges
Shop ink cartridges for your Brother MFC-J6720DW, which uses the Brother LC137XL, LC139XL, and LC135XL ink cartridge series. Ink Depot has been supplying reliable consumables for this printer since Feb 2014. Designed for A3 wide-format business printing, this All-in-One relies on steady ink supply for large plans and office reports. Upgrading from standard capacity to LC139XL high-yield Black and LC135XL colour cartridges significantly reduces dropouts and per-page output costs. Our 4.8 Google rating is built on dependable cartridge performance and uncompromising product quality.
Understanding yield capacity and page output
Page yields for Brother ink cartridges are measured under ISO/IEC 24711 testing standards using standard 5% page coverage. High-yield LC139XL black cartridges yield up to 2,400 pages, while LC135XL colour cartridges deliver up to 1,200 pages, keeping high-volume office workflows running smoothly.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| LC135XL-C | High Yield | Cyan | 1,200 | $0.038 |
| LC135XL-M | High Yield | Magenta | 1,200 | $0.038 |
| LC135XL-Y | High Yield | Yellow | 1,200 | $0.038 |
| LC139XL-BK | Extra High Yield | Black | 2,400 | $0.029 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Choosing between genuine and compatible cartridges
Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Choosing compatible inks offers substantial savings for high-volume office printing without compromising print quality. To learn more about how third-party cartridges perform against original manufacturer supplies, read our guide on genuine vs compatible cartridges.
Smart buying options for business printing
For high-volume office environments focused on text documents, selecting LC139XL high-yield black cartridges minimises cost per page. If you choose compatible cartridges to reduce printing costs, rest easy knowing they are backed by a full money-back guarantee under our returns policy. Free delivery applies on all orders over $99. To ensure quick dispatch, we ship directly from local warehouses in Perth, Brisbane, Sydney, Melbourne, and Adelaide. Browse our complete range of Brother ink cartridges to stock up today.
Pro Tip
When purchasing LC139XL high-yield black cartridges for heavy document printing, combining them with LC135XL high-yield colour cartridges ensures you do not run out of key colours mid-project, avoiding unnecessary printing downtime on large A3 print runs.
Frequently Asked Questions
Can I install an LC139XL high-yield black cartridge if my printer previously used standard LC131 or LC133?
Yes, the LC139XL cartridge has the exact same external physical footprint and fits directly into the black slot of your Brother MFC-J6720DW, but holds more ink for higher page yields.
Why does my printer prompt to replace colour cartridges even if I mostly print in black text?
Brother inkjet printers use small amounts of colour ink during automated cleaning cycles and printhead preservation sequences to prevent nozzle clogging, ensuring consistent output when colour documents are needed.
How does A3 paper printing impact overall cartridge yield?
Printing A3 documents covers double the surface area of standard A4 pages. Consequently, printing full A3 pages consumes more ink per sheet, reducing overall sheet yield and making high-yield LC139XL and LC135XL cartridges the most economical choice for large-format printing.
