Canon MG6600 Series Manual page 231

Check this check box to perform the manual head alignment. Uncheck this check box to perform the
automatic head alignment.
Don't detect mismatch of paper settings when printing from computer
When you print documents from your computer and the paper settings on the print dialog and the
printer do not match, this setting disables the message display and allows you to continue printing.
To disable detection of paper setting mismatches, select this check box.
3. Apply the settings
Click Apply and when the confirmation message appears, click OK.
The printer operates with the modified settings hereafter.
231