Canon MX850 Quick Start Guide - Page 148

The Print Result Not Satisfactory When Copying, Colors Are Uneven or Streaked

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Cause Action Paper Feed Roller is dirty. Inside of the machine is dirty. Clean the Paper Feed Roller. Cleaning the Paper Feed Roller will wear the roller, so perform this procedure only when necessary. For details on cleaning, see "Cleaning the Paper Feed Roller (Roller Cleaning)" on page 127. Performing duplex printing may leave some ink inside the machine, causing printouts to be smudged. In this case, perform 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 128. Printing graphics with the Intensity setting set too high. Note To prevent the inside of the machine from getting stained, set the page size correctly. Especially if you are using plain paper to print images with high intensity, the paper may absorb too much ink and become wavy, causing paper abrasion. When copying, see "Making Copies" on page 35 and reduce the intensity setting. Then try printing again. When printing from your computer, refer to "Print Results Not Satisfactory" in the User's Guide on-screen manual. „ Colors Are Uneven or Streaked Cause Print Head is misaligned. Print Head nozzles are clogged. Action See "Automatic Print Head Alignment" on page 119 and perform Automatic Print Head Alignment. If this does not solve the problem, see "Manual Print Head Alignment" on page 120 and perform Manual Print Head Alignment. See "When Printing Becomes Faint or Colors Are Incorrect" on page 114 and perform any necessary maintenance operation. The Print Result Not Satisfactory When Copying Cause Action The original document is not loaded correctly. Check that the original is loaded correctly on the Platen Glass or in the ADF. See "Handling the Original Document" on page 16. The original document is loaded with the wrong side facing up. When loading the original on the Platen Glass, the side to be copied should be face down. When loading the original in the ADF, the side to be copied should be face up. The original document is a printout from this machine. Print quality may be reduced if you copy a printout. Instead of copying a printout, print the original directly either from the digital camera, memory card, or your computer. The Platen Glass, the inner side of the Clean the Platen Glass, the inner side of the Document Cover, or the ADF. Document Cover, or the ADF is dirty. See "Cleaning Your Machine" on page 125. If these do not resolve the problem, also see "Print Results Not Satisfactory" on page 141. 144 Troubleshooting

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144
Troubleshooting
Colors Are Uneven or Streaked
The Print Result Not Satisfactory When Copying
If these do not resolve the problem, also see “Print Results Not Satisfactory” on page 141.
Paper Feed Roller is dirty.
Clean the Paper Feed Roller. Cleaning the Paper Feed Roller will wear the
roller, so perform this procedure only when necessary.
For details on cleaning, see “Cleaning the Paper Feed Roller (Roller Cleaning)”
on page 127.
Inside of the machine is dirty.
Performing duplex printing may leave some ink inside the machine, causing
printouts to be smudged. In this case, perform 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 128.
Note
To prevent the inside of the machine from getting stained, set the page size
correctly.
Printing graphics with the
Intensity
setting set too high.
Especially if you are using plain paper to print images with high intensity, the
paper may absorb too much ink and become wavy, causing paper abrasion.
When copying, see “Making Copies” on page 35 and reduce the intensity
setting. Then try printing again.
When printing from your computer, refer to “Print Results Not Satisfactory” in the
User’s Guide
on-screen manual.
Cause
Action
Print Head is misaligned.
See “Automatic Print Head Alignment” on page 119 and perform Automatic Print
Head Alignment. If this does not solve the problem, see “Manual Print Head
Alignment” on page 120 and perform Manual Print Head Alignment.
Print Head nozzles are clogged.
See “When Printing Becomes Faint or Colors Are Incorrect” on page 114 and
perform any necessary maintenance operation.
Cause
Action
The original document is not loaded
correctly.
Check that the original is loaded correctly on the Platen Glass or in the ADF.
See “Handling the Original Document” on page 16.
The original document is loaded with
the wrong side facing up.
When loading the original on the Platen Glass, the side to be copied should be
face down.
When loading the original in the ADF, the side to be copied should be face up.
The original document is a printout
from this machine.
Print quality may be reduced if you copy a printout.
Instead of copying a printout, print the original directly either from the digital
camera, memory card, or your computer.
The Platen Glass, the inner side of the
Document Cover, or the ADF is dirty.
Clean the Platen Glass, the inner side of the Document Cover, or the ADF.
See “Cleaning Your Machine” on page 125.
Cause
Action