84 Troubleshooting Printed Paper Curls or Has Ink Blots Printed Surface Is Scratched/Paper Is SmudgedCause ActionPaper is too thin. When printing data with high color saturation such as photographs or images indeep color, we recommend using Photo Paper Pro or other Canon specialtypaper. See “Media Types You Cannot Use” on page 11.Cause ActionPaper feed roller is dirty. Clean the paper feed roller. Cleaning the paper feed roller will wear the roller, soperform this procedure only when necessary.For details on cleaning, see “Cleaning the Paper Feed Roller (Roller Cleaning)”on page 72.Inside of the machine is dirty. When performing duplex printing, if the specified page size does not match theactual size of paper loaded in the paper source, the inside will become stainedwith ink, causing printed paper to become smudged.Perform the Bottom Plate Cleaning to clean the inside of the machine.For details on cleaning, see “Cleaning the Inside of the Machine (Bottom PlateCleaning)” on page 73.NoteTo prevent the inside of the machine from getting stained, set the page sizecorrectly.Printing on inappropriate type of paper. z Check to see if the paper you are printing on is not too thick or curled.See “Media Types You Cannot Use” on page 11.z When performing Borderless Printing, print quality may be reduced at the topand bottom edges of the paper. Make sure that the paper you are using issuitable for Borderless Printing.For details, refer to “Printing Area” in the User’s Guide on-screen manual.
