Poor print quality. suspect bad ink cartridge. Replaced and still same problem. Model mfc-4420c

If you touched the electrical contacts on the cartridge the high voltage used could be taking a shorter path to ground. Try cleaning the contacts on the cartridge and inside the printer with a lint free cloth and some 99% isopropyl alcohol then wipe dry.

No, It could be that the copper/metallic plate that interfaces with the cartridge and/or the carriage could be dirty. Remember that the ink is heated to produce the steam which is necessary to push the ink out of the cartridge. That spray doesn't just go down. It atomizes the ink so it sprays everywhere. You may need to clean those contacts with 91-99% Isopropyl Alcohol and use a coffee filter. The white filters are cheap, lint-free, and durable. Please turn off the printer and unplug it before you use any liquids on the contacts!!!

Print heads bad or dirty, as well the cleaning sponge is no doubt in need of attention. They can be replaced but the economics are spendy. Good Luck
mps4

Clean the head if problem still persist replace print head.

To start ensure that is not a software problem.
Go to Control Panel >> Installed Printers. Remove the printer. Install the printer again using the software disk or downloading the driver software from Brother website.
If that does not fix the problem, and the printer prints blank sheets, then it is usually a clogged printhead.
The printheads can be cleaned removing the ink carriage and soaking it in isopropyl alcohol overnight. If that does not work, then the printhead must be replaced.
Regards

if you filled the ink with some of the kits, the ink was not totally compatible with brother printer, and most likely dried inside. if that is not the case, do the cleaning from the brother menu screen for all ink cartridges. if you under warranty call brother. it might take a while to fix, since they may send a local tech to replace the head since that is mostlikely issue. if out of warranty, you best likey choice, curb it and get new one with extended warranty.

I get this problem when I used re-filled cartridges, but take no notice until the ink fails.

the messages you get for cartridges other than the original are not trustful. You will get the right reading for original(from Brother) cartridges. Some ink is poor for printing photo quality.

not any refillable ink is right for printing photos, sometimes too dark, sometimes you don't get the right mix of colors.

do you have the canon print management software installed? it's located in the maintenance tab on that software.

www.canon.com has that by model number

My printer has funn ink cartridges and it is printing blank pages and it is saying that the ink is empty. Please help