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Canon MF632C printing light though cartridge is full


 My Canon printer started printing very bad (faded prints) though all the cartridge levels are full. Any help is appreciated. I tried to run all the maintenance on the printer still no resolution




So that the Community can help you better, we will need to know more information.

Do you see any error messages?
Which Computer Operating System are you using (Windows 7/8/10/11 or macOS 10/11/12)?
How do you connect to your printer (USB or WiFi)?
Any other details you'd like to give will only help the Community better understand your issue.
If you're in the United States, and this is an urgent support need, please click HERE to visit your My Canon Account to discover your personalized support options.
If you're outside the USA, please click HERE to find support options in your country.

Thanks and have a great day!


i don’t see any error messages. I am using wireless printing from windows 11, macOS or even from airprint iPhone. 

Hello Soumyaghosh8,

If the toner cartridges have just been replaced, you can try turning the option to reduce faint prints after replacing a cartridge to on from the operation panel. 

<Menu><Adjustment/Maintenance><Adjust Image Quality><Special Processing><Rdc. Faint Print After Rplc. Cart.>

If turning the setting on, does not resolve the issue, you can also try adjusting the gradation to see if the print quality improves.