Canon S820 사용자 설명서

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Printhead Deep Cleaning
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Routine Maintenance
Printhead Deep Cleaning
If print quality does not improve by standard printhead cleaning, try deep cleaning, which is 
a more powerful process. Perform printhead deep cleaning from the printer driver.
Note
Printhead deep cleaning consumes more ink than standard printhead 
cleaning, so perform this procedure only when necessary.
Windows
1
Ensure that the printer is on.
2
Open the Printer Properties dialog box.
3
Click the Maintenance tab and then click the Deep Cleaning icon.
4
When the confirmation message is displayed, click OK.