Yes you might be correct however you could try the below trouble shooting it might be possible that it will help.
If it will not help then you can refer the local service center for your printer.
Check your printer's paper settings.
Switch setting to Photo Paper (even if you're using plain paper) , select MATTE Photo paper, save the settings. Now try printing again.
In my case, my blurry print became razor-sharp with this setting on my Canon MG7520.
You're using more ink, but worth it if your printing an important document or shipping label.
I hope it will help.
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