What Ink Does the Brother MFC-J6730DW Use?
Last Updated:The Brother MFC-J6730DW uses LC3019 super high-yield ink cartridges (Black, Cyan, Magenta, Yellow). It also accepts LC3017 high-yield and LC3015 standard-yield cartridges. LC3019 is the best value for heavy-volume offices.
Ink Cartridges at a Glance
| Cartridge | Color | Yield |
|---|---|---|
| LC3019BK | Black | ~3,000 pages |
| LC3019C | Cyan | ~1,500 pages |
| LC3019M | Magenta | ~1,500 pages |
| LC3019Y | Yellow | ~1,500 pages |
| LC3017BK | Black (HY) | ~550 pages |
The LC3019/LC3017/LC3015 cartridge family fits several wide-format Brother all-in-ones, including the MFC-J5330DW, MFC-J5730DW, MFC-J5930DW, MFC-J6530DW, MFC-J6730DW and MFC-J6930DW.
Save on LC3019 Ink
Compatible LC3019 cartridges work in the MFC-J6730DW at a fraction of OEM pricing. Shop LC3019 cartridges at Castle Ink for big savings.
How to Replace Ink in the Brother MFC-J6730DW
- Open the front ink cover on the printer.
- Press the release lever for the empty cartridge and remove it.
- Unbox the new LC3019 cartridge and pull off the orange seal.
- Insert the cartridge in the matching color slot until it clicks.
- Close the cover — the printer will run a brief priming cycle.
Troubleshooting Tips
Cartridge not detected: Wipe the gold contact chip and reseat firmly.
Streaky output: Run Maintenance > Print Quality Check > Cleaning.
Color missing: Make sure the orange seal was fully removed.
Low ink warning is wrong: Compatibles show estimated levels — go by print quality.
Official Brother Resources
Brother MFC-J6730DW product page · Brother support
Bottom Line
The Brother MFC-J6730DW uses LC3019 super high-yield ink (or LC3017 / LC3015). Choose LC3019 for the best cost-per-page and shop LC3019 at Castle Ink.
Frequently Asked Questions
LC3019, LC3017 or LC3015? All fit; LC3019 prints the most pages.
Page yield? About 3,000 black / 1,500 color pages per LC3019.
Can I mix LC3019 and LC3017? Yes — any combination works.
Will compatible LC3019 cartridges work? Yes — quality compatibles fit the MFC-J6730DW.
Why isn't my cartridge recognized? Clean the chip and reseat firmly.
— William Elward