Cleaning the Paper Path
If you see ink on the back of a printout, you can clean the paper path to remove any excess ink.
Make sure that no product lights indicate errors, the CD/DVD tray is not inserted in the product, and the CD/DVD feed tray is closed.
Load several sheets of A3-size paper, if available. Otherwise, load several sheets of plain paper.
button to feed and eject paper.
Repeat as necessary until the paper comes out clean.
Adjusting Print Quality