65Troubleshooting Printed Surface Is Scratched/Paper Is SmudgedCause ActionPaper Feed Roller is dirty. If paper is not feeding properly, clean the Paper Feed Rollers.Cleaning the Paper Feed Rollers will wear the rollers, so performthis procedure only when necessary.For details on cleaning, see “Cleaning the Roller (RollerCleaning)” of the User’s Guide on-screen manual.Inside of the printer is dirty. Performing many printings may leave some ink inside the printer,causing printouts to be smudged. In this case, perform bottomplate cleaning to clean the inside of the printer. “Cleaning theProtrusions Inside the Printer“ of the User’s Guide on-screenmanual.For details on cleaning, see “Cleaning the Interior of the Printer(Bottom Plate Cleaning)” of the User’s Guide on-screen manual.Printing on inappropriate type ofpaper.z Check to see if the paper you are printing on is not too thick orcurled.z When performing Borderless Printing, print quality may be reducedat the top and bottom edges of the paper.Curled paper used If all four corners or the printing surface of the paper is curled,the paper may become dirty or the paper may not feed properly.Use the paper after correcting paper curl as follows.(1) Face up the printing surface *1 , and cover it with a non-printing regular paper to avoid damaging the surface.(2) Roll up the paper in a direction opposite to paper curl as thefigure below.(3) Check the printing paper if paper curl is corrected withinapproximately 2 to 5 mm*2 .It is recommended to print the curl-corrected paper onesheet at a time.The Paper Thickness Leverposition is incorrect.Set the Paper Thickness Lever according to the paper to print.Refer to “Printing Media” of the User’s Guide on-screen manual.Depending on the printing content, the printing surface maybecome scratched even for the types of paper to set the lever tothe right. In this case, set the Paper Thickness Lever to the left.* Return the Paper Thickness Lever to the right position afterprinting. If you do not return the lever, the distance between thePrint Head and printing paper stays broadened and the inside ofthe printer will easily get dirty. The image quality also may bedecreased.(1) (2)*1*1*2