I thought I would get cheaper cartridges for my Brother DCP-6690CW.
At first - no problem - but that was because there was still the good ink in the printer. However once the cheapie ink got through..
This has now stopped printing - I have replaced these cheap cartridges with proper cartridges, and I have now gone through £32 of Brother cartridges on cleaning cycles trying to clean the cheap ink out of it.
The printer is stuffed, so I will now have to spend another £170 on buying a new printer - what fool I am!
Do not buy this product - it will cost you a fortune to solve the problem