Canon PIXMA MG4200 Series On-Screen Manual page 577

Printing profile in the Print dialog will be updated to the called profile.
Deleting Unnecessary Printing Profile
1.
Select the printing profile to be deleted
If you are using Mac OS X 10.7
In the print dialog, select Show Presets... in the Presets section. Then in the dialog that appears,
select the name of the printing profile to be deleted.
If you are using Mac OS X 10.6 or Mac OS X 10.5.8
On Presets in the Print dialog, select the name of printing profile you want to delete.
2.
Delete the printing profile
Click Delete. The selected printing profiles will be deleted from Presets.
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