Back Of Paper Is Smudged - Canon Pixma TR7800 Series Online Manual

Back of Paper Is Smudged

Check paper and print quality settings.
Check 1
Resolving Print Quality Problems
Perform bottom plate cleaning to clean inside of printer.
Check 2
Cleaning Inside the Printer (Bottom Plate Cleaning)
Note
• • During 2-sided printing, or too much printing, ink may stain the inside of the printer.
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