Canon MX850 Series Manuel D’Utilisation

Troubleshooting

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Printing on inappropriate type of paper.

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Check to see if the paper you are printing on is not too thick or curled.
See “Paper Handling” on page 21 to make sure that the paper you are using 
is suitable.
If the paper is curled, see “Paper is curled.” on page 143 to correct paper 
curl.

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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.

Paper is curled.

If you are using paper with either any of the corners or the whole printing 
surface curled, the paper may become dirty, not feed properly, or both. Use such 
paper after correcting paper curl as follows.
(1)With the printing side (A) facing up, cover the paper with a fresh sheet of 

plain paper to avoid staining or scratching the surface.

(2)Roll up the paper in a direction opposite to paper curl as seen below.

(3)Check to see that the paper curl is within approximately 0.08 to 0.2 inches / 2 

to 5 mm (B) in height.

We recommend printing curl-corrected paper one sheet at a time.

Depending on the media type, the paper may be smudged or may not be fed 
properly even if it is not curled.
In such case, follow the procedure described above to curl the paper before 
printing. This may improve the print result.

Printing on thick paper.

Selecting the Prevent paper abrasion setting will widen the clearance between 
the Print Head and the loaded paper. If you notice abrasion even with the media 
type set correctly to match the loaded paper, set the machine to prevent paper 
abrasion by using the Operation Panel on the machine or the printer driver.* 
* Deactivate the Prevent paper abrasion setting once printing is complete. If 
not, this setting remains enabled for all subsequent print jobs. 
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Setting with the Operation Panel on the machine 
Press the Menu button, select Maintenance/settings, Device settings, and 
Print settings in this order, and then set Prevent paper abrasion to ON. For 
details, refer to “Device Settings” in the User’s Guide on-screen manual.

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Setting with the printer driver 
Refer to “Print Results Not Satisfactory” in the User’s Guide on-screen 
manual.

Printing beyond the recommended 
printing area.

If you are printing beyond the recommended printing area of your printing paper, 
the lower edge of the paper may become stained with ink.
Resize your original document in your application software.
For details on recommended printing area, refer to “Printing Area” in the User’s 
Guide on-screen manual.

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(2)

(A)

(B)

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