Cartridge prices starting at $6.95

The Brother MFC-5840CN does all the tasks that it's supposed to do at lesser time and with outstanding results. It can print at speeds of up to 20 ppm at 6,000 by 1,200 dpi resolution, and it can copy at up to 17 cpm speed. It also works as a scanner and fax, and it comes with dual paper trays to save you time refilling. For replacement ink cartridges, choose Inkjets' compatible Brother ink cartridges that cost up to 70% off the originals. We've been providing compatible cartridges and supplies for 20 years now, and we're committed to bringing only the best quality products at prices that you can afford. Check out our listing below to find our best deals—you can even enjoy bigger savings with our Brother LC41 Compatible 5-Piece Combo Pack. 

Shop Cartridges for MFC-5840CN

Request a quote for


Need a Proposal or Have a Question? Please fill out the form below
and one of our aerial experts will be in touch immediately.

2 Items

per page
Set Ascending Direction

How to Replace Cartridge(s)

Here's how to install a new ink cartridge on the Brother MFC-5840CN:


  1. Lift the scanner cover to open. Make sure that it is locked securely into the open position before you proceed.
  2. Pull the ink cartridge hook toward you. Then, remove the empty ink cartridge.
  3. Remove the new ink cartridge from the bag. Then, remove the cartridge cover.
  4. Keep the new ink cartridge in an upright position when inserting it into the correct slot.
  5. Firmly press down on the new cartridge until the hook snaps securely.
  6. Close the scanner cover.


Frequently Asked Questions


The 'Ink Empty Black' and 'Replace Ink' error messages appear on the Brother MFC-5840CN display. Will I be able to print a few more pages?

No. The MFC-5840CN will automatically stop its operation once it detects an empty ink cartridge. Replace the empty black ink cartridge immediately to resume printing.


Why did I get an 'Install' message after replacing the old cartridge with your compatible Brother ink cartridge?

An 'Install' error message indicates that the cartridge is not properly installed. Try removing the cartridge and reinstall it. Make sure that the hook snaps securely over it before you close the cartridge cover.


If my order is below $30 and shipping to Alaska, how much do I pay for shipping?

For orders below $30 and shipping to US non-contiguous states, a shipping fee of $24.99 will apply.