Advanced Guide > Maintenance > Performing Maintenance from a Computer > Cleaning Inside the MachineCleaning Inside the MachineThe bottom plate cleaning function allows you to prevent smudges on the back side of the paper.Perform bottom plate cleaning before you execute duplex printing.Also perform bottom plate cleaning if ink smudges caused by something other than print data appear onthe printed page.For details on how to load paper into the machine, see " Cleaning the Inside of the Machine (Bottom PlateCleaning) ."The procedure for performing bottom plate cleaning is as follows:Bottom Plate Cleaning1. Open the printer driver setup window2. Click Bottom Plate Cleaning on the Maintenance tabThe Bottom Plate Cleaning dialog box opens.3. Load paper in the machineAs instructed in the dialog box, fold the A4 size or Letter size plain paper in half horizontally, and thenunfold the sheet.Load the paper into the rear tray in the portrait orientation with the crest of the crease facing down.4. Perform the bottom plate cleaningMake sure that the machine is on and click Execute.Bottom plate cleaning starts.Page topPage 677 of 853 pagesCleaning Inside the Machine