Canon PRO-10 Series Manual page 744

3.
Select Custom Settings in the pop-up menu.
4.
Select the Execute ink quality maintenance automatically check box, then
click Apply.
5.
Confirm the message and click OK.
Important
Enabling automatic ink quality maintenance is recommended. Failure to perform the ink quality
maintenance about once a week may affect print quality.
If automatic ink quality maintenance has been disabled, perform the ink quality maintenance
manually about once a week.
Maintaining the Ink Quality
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