Canon PIXMA MG4200 Series On-Screen Manual page 509

Note
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical
white streaks.
(A) Least noticeable vertical white streaks
(B) Most noticeable vertical white streaks
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable
horizontal white streaks.
(A) Least noticeable horizontal white streaks
(B) Most noticeable horizontal white streaks
9.
Confirm the displayed message and click OK
The second pattern is printed.
10.
Check the printed pattern
Enter the numbers of the patterns with the least amount of streaks in the associated boxes, and click
OK.