Canon PIXMA iP4820 On-Screen Manual - Page 366

Manual Print Head Alignment Page 366 of 468 pages 6. Look at the second printout and adjust the print head position. 1. Check the printed patterns and select the number of the pattern in column H that has the least noticeable vertical streaks. Note If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical white streaks. (E) Less noticeable vertical white streaks (F) More noticeable vertical white streaks 2. Repeat the procedure until you finish inputting the pattern number for column Q, then click OK. 3. Confirm the displayed message and click OK. The third pattern is printed. Important Do not open the Top Cover while printing is in progress. 7. Look at the third printout and adjust the print head position. 1. Check the printed patterns and select the number of the pattern in column a that has the least noticeable horizontal streaks.