Poor printing quality

Can you add a picture of poor quality?

1st question that should be asked, is was it a genuine Brother approved cartridge with the right value of filtered ink?

If not then the jets will be possibly clogged.

if you return it for repair to brother under warranty, make sure its fitted with genuine cartridges otherwise warranty is void

please rate my help++++thanks for using fixya

I have to ask this question of you, just to make sure this is not an issue. Are you using a factory new ink or toner cartridge?
Please consider the following:
If you are using a refilled or third party cartridges that may well be your problem. Most manufacturers build logic into their products to prevent the use of “Other Equipment Manufactured” cartridges as well as re-filled cartridges.
They do this to prevent problems from contaminated inks or toner causing problems with print quality or damaging the physical printhead or photo conductors.
If you are using factory new ink or toner cartridges, then please call the manufacturer’s Technical Support for assistance with the warranty on the cartridges
Don

The print head is clogged.You can try unclogging manually.WARNING: next steps may lead to a defective of print head, try on your responsibility.
Open the cover and first remove the ink cartridges.Then open the holder and remove the print head.Run hot tap water and put the print head with the nozzles up to stream water.Hold that 5 mins then turn the print head around with the nozzles down.Hold that for every color of 5 mins.Then put the print head in hot water with the nozzles down.Left it water about 15 mins and then you must very nice to dry.When the print head dry put it in printer and start cleaning.If this not help you need to replace the print head.It's part number is QY6-0049.

you can downlaod the driver form this link
http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?prodNameId=390320&lang=en&cc=us&taskId=135&prodSeriesId=390314&prodTypeId=18972

Shaking these cartridges does nothing except give you a little exercise. If this is a brand new HP cartridge you are having problems with I would return it to the store you purchased it from. HP brand cartridges should not give you these problems right out of the box. The print defects you are seeing are due to a dried up or clogged print head. If you like you can try hydrating the print head on a water soaked paper towel until the ink starts flowing, but there's a risk you will cross contaminate the colors.

it sounds like you have clogged the head if you leave it for 6 hours then the ink will dry inside the head then you have a big prob if i were you i would take it back to the shop and get a refund or a replacement one i have an epson dx4400 very good

check the wright cartridge model you installed and well pluged to the printer

if it is ok

try to change printer properties and fix it correct options with there tabs ( ex: paper, print quality etc)

all are well try to reinstall the printer driver

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

I SUGEST YOU USE THE CLEANING FUNCTION OF THE
PRINTER TO MAKE THE PRINTING HEADS CLEAN