When the printouts are smeared or scuffed, clean the roller inside.
Do not use tissue paper to clean the inside of the printer. The print head nozzles may be clogged with lint.
Make sure there is no dust or stains on the scanner glass and the document cover.
Load A4-size plain paper in the printer.
Start copying without placing the original.
Repeat this procedure until the paper is not smeared with ink.