Cleaning Inside the Machine
To prevent smudges on the back side of the paper, perform bottom plate cleaning.
Also perform bottom plate cleaning if ink smudges caused by something other than print data appear on the printed page.
The procedure for performing bottom plate cleaning is as follows:
Bottom Plate Cleaning
Select Cleaning from the pop-up menu on the Canon IJ Printer Utility
Click the Bottom Plate Cleaning icon
The dialog opens.
Load paper in the machine
As instructed in the dialog, fold the A4 size or Letter size plain paper in half horizontally, and then unfold the sheet.
Fold one side of the paper in another half, aligning the edge with the center crease, then unfold the paper.
With the ridges of the creases facing up, load the paper into the front tray, so that the edge of the half with no crease faces away from you.Perform the bottom plate cleaning
Make sure that the machine is on and then click OK.
Bottom plate cleaning starts.