Canon MX850 Series Manuel D’Utilisation

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141
Troubleshooting
Print Results Not Satisfactory
If the print result is not satisfactory such as white streaks, misaligned lines, and uneven colors, 
confirm the paper and print quality settings first.
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Check 1: Do the page size and media type settings match the size and 
type of the loaded paper?
When these settings are incorrect, you cannot obtain a proper print result. If you are printing a 
photograph or an illustration, incorrect paper type setting may reduce the quality of printout color. 
Also, if you print with an incorrect paper type setting, the printed surface may be scratched. In 
borderless printing, uneven coloring may occur depending on the combination of the paper type 
setting and the loaded paper.
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Check 2: Did you set the print quality setting appropriately?
Select a print quality option suitable to the paper and image for printing. If you notice blurs or 
uneven colors, increase the print quality setting and try printing again.
* When printing from a PictBridge compliant device, set the print quality setting by using the 
Operation Panel on the machine. You cannot make this setting from a PictBridge compliant 
device.
* You cannot change the print quality setting when printing from a wireless communication 
device.
The method to confirm the paper and print quality settings differs depending on what you do with 
your machine.
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Check 3: If the problem is not resolved, there may be other causes.
See also the sections below.
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“Printing Does Not Start/Printing Is Blurred/Colors Are Wrong/Straight Lines Are Misaligned” 
on page 142
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“White Streaks” on page 142
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“Printed Paper Curls or Has Ink Blots” on page 142
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“Printed Surface Is Scratched/Paper Is Smudged” on page 143
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“Colors Are Uneven or Streaked” on page 144
To copy or to print from your 
memory card by operating 
the machine
Confirm by using the Operation Panel on the machine.
Refer to the User’s Guide on-screen manual.
To print from a PictBridge 
compliant device
Confirm by using your PictBridge compliant device or the Operation 
Panel on the machine.
See “Printing Photographs Directly from a PictBridge Compliant 
Device” on page 51.
To print from a wireless 
communication device
Confirm by using the Operation Panel on the machine.
Refer to “Printing Photographs from a Wireless Communication 
Device” in the User's Guide on-screen manual.
To print from a computer
Confirm by using the printer driver.
Refer to the PC Printing Guide on-screen manual.