Canon PIXMA MP470 MP470 series Quick Start Guide - Page 67

Cause Inappropriate Paper Thickness Lever setting. Print Head is misaligned. „ White Streaks Action Adjust the position of the Paper Thickness Lever according to the type of paper you are printing on. See "Paper Handling" on page 13. Depending on the printing content, the printing surface may become scratched even for the types of paper to set the lever to the left. In this case, set the Paper Thickness Lever to the right. * Reset the Paper Thickness Lever to the left when you finish printing. If the lever is not set back to the left, the inside of the machine is more likely to get dirty due to the wider clearance between the print head and the loaded paper. It may also reduce print quality. If you did not align the Print Head after installation, straight lines may be printed misaligned. Make sure to align the Print Head after you install it. See "Aligning the Print Head" on page 44 to perform Print Head Alignment using the Operation Panel. Cause Action Print Head nozzles are clogged. See "When Printing Becomes Faint or Colors Are Incorrect" on page 38 and perform any necessary maintenance operation. „ Printed Paper Curls or Has Ink Blots Cause Action Paper is too thin. When printing data with high color saturation such as photographs or images in deep color, we recommend using Photo Paper Pro or other Canon specialty paper. See "Media Types You Cannot Use" on page 14. „ Printed Surface Is Scratched/Paper Is Smudged Cause Action Paper Feed Roller is dirty. Inside of the machine is dirty. Clean the Paper Feed Rollers. Cleaning the Paper Feed Rollers will wear the rollers, so perform this procedure only when necessary. For details on cleaning, see "Cleaning the Paper Feed Roller (Roller cleaning)" on page 53. When performing duplex printing, if the specified page size does not match the actual size of paper loaded in the paper source, the inside will become stained with 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 plate cleaning)" on page 54. Printing on inappropriate type of paper. Note To prevent the inside of the machine from getting stained, set the page size correctly. 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 14. z When performing Borderless Printing, print quality may be reduced at the top and bottom edges of the paper. Make sure that the paper you are using is suitable for Borderless Printing. For details, refer to "Printing Area" in the User's Guide on-screen manual. Troubleshooting 63