Canon PIXMA MP510 Quick Start Manual page 55

Note
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable
vertical white streaks.
(A)
(A) Less noticeable white streaks
(B) More noticeable white streaks
(4) Check the printed patterns and use the [ or ]
button to input the number of the pattern in
column L that has the least noticeable
horizontal streaks.
(5) When you have finished inputting all pattern numbers, press the OK button.
Note
When you turn off the machine, be sure to press the ON/OFF button on the machine.
Otherwise, the settings made here will not be saved.
(B)
Routine Maintenance 51