Canon printer PIXMA MG7520 User Manual

							Important•
Do not open the operation panel while printing is in progress.
6.
Look at the second pattern and adjust the print head position.
1.
Tap I to check the printed patterns, and tap the number of the pattern in column I that has theleast noticeable vertical streaks.
Note
•
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical
streaks.
(E) Unnoticeable vertical streaks
(F) Noticeable vertical streaks
2.
Repeat the same procedure until you finish inputting the pattern number for columns J to P,
then tap  OK.
3.
Confirm the message, then tap  OK.
The third pattern is printed.
Important
•
Do not open the operation panel while printing is in progress.
7.
Look at the third pattern and adjust the print head position.
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							1.Tap a to check the printed patterns, and tap the number of the pattern in column a that hasthe least noticeable horizontal stripes.
Note
•
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable horizontal
stripes.
(G) Unnoticeable horizontal stripes
(H) Noticeable horizontal stripes
2.
Repeat the same procedure until you finish inputting the pattern number for columns b to h, then tap  OK.
The manual adjustment of the print head position is complete.
3.
When the completion message appears, tap  OK.
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							Performing Maintenance from a Computer
Cleaning the Print Heads from Your Computer
Aligning the Print Head Position from Your Computer
Use Your Computer to Print a Nozzle Check Pattern
233 
						

							Cleaning the Print Heads from Your ComputerThe print head cleaning function allows you to clear up clogged print head nozzle. Perform print head
cleaning if printing is faint or a specific color fails to print, even though there is enough ink.
The procedure for cleaning the print head is as follows:
 Cleaning
1.
Open the printer driver setup window
2.
Click  Cleaning  on the Maintenance  tab
When the  Print Head Cleaning  dialog box opens, select the ink group for which cleaning is to be
performed.
Click  Initial Check Items  to display the items you need to check before performing cleaning.
3.
Execute cleaning
Make sure that the printer is on and then click  Execute.
Print head cleaning starts.
Important
•
Do not close the paper output tray until the cleaning is complete.
4.
Complete cleaning
The  Nozzle Check  dialog box opens after the confirmation message.
5.
Check the results
To check whether the print quality has improved, click  Print Check Pattern. To cancel the check
process, click  Cancel.
If cleaning the head once does not resolve the print head problem, clean it once more.
Important
•
Cleaning  consumes a small amount of ink.
Cleaning the print head frequently will rapidly deplete your printer's ink supply. Consequently, perform
cleaning only when necessary.
 Deep Cleaning
Deep Cleaning  is more thorough than cleaning. Perform deep cleaning when two  Cleaning attempts do
not resolve the print head problem.
1.
Open the printer driver setup window
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							2.Click Deep Cleaning  on the Maintenance  tab
When the  Deep Cleaning  dialog box opens, select the ink group for which deep cleaning is to be
performed.
Click  Initial Check Items  to display the items you need to check before performing deep cleaning.3.
Execute deep cleaning
Make sure that the printer is on and then click  Execute.
Click  OK when the confirmation message appears.
Print head deep cleaning starts.
Important
•
Do not close the paper output tray until the deep cleaning is complete.
4.
Complete deep cleaning
The  Nozzle Check  dialog box opens after the confirmation message.
5.
Check the results
To check whether the print quality has improved, click  Print Check Pattern. To cancel the check
process, click  Cancel.
Important
•
Deep Cleaning  consumes a larger amount of ink than  Cleaning.
Cleaning the print head frequently will rapidly deplete your printer's ink supply. Consequently, perform
cleaning only when necessary.
Note
•
If there is no sign of improvement after  Deep Cleaning, turn off the printer, wait 24 hours, and then
perform  Deep Cleaning  again. If there is still no sign of improvement, the ink may have run out or the
print head may be worn. For details on the remedial action to be taken, see "
Ink Is Not Ejected ."
Related Topic
Use Your Computer to Print a Nozzle Check Pattern
235 
						

							Aligning the Print Head Position from Your ComputerPrint head alignment corrects the installation positions of the print head and improves deviated colors and
lines.
This printer supports two head alignment methods: automatic head alignment and manual head alignment.
Normally, the printer is set for automatic head alignment.
If the printing results of automatic print head alignment are not satisfactory, 
perform manual head alignment .
The procedure for performing automatic print head alignment is as follows:
Note
•
If the disc tray guide is open, close it.
•
The pattern is printed only in black and blue.
 Print Head Alignment
1.
Open the printer driver setup window
2.
Click  Print Head Alignment  on the Maintenance  tab
The  Start Print Head Alignment  dialog box opens.
3.
Load paper in the printer
Load one sheet of A4 size or Letter size plain paper into the cassette 2.
Note
•
The number of sheets to be used differs when you select the manual head alignment.
4.
Execute head alignment
Make sure that the printer is on and click  Align Print Head.
Follow the instruction in the message.
Important
•
Do not open the operation panel while printing is in progress.
Note
•
Wait until printing ends before performing other operations. Printing takes about 3 to 4 minutes to complete.
Note
•
To print and check the current setting, open the  Start Print Head Alignment dialog box, and click Print
Alignment Value .
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							Aligning the Print Head Position Manually from Your ComputerPrint head alignment corrects the installation positions of the print head and improves deviated colors and
lines.
This printer supports two head alignment methods: 
automatic head alignment  and manual head alignment.
Normally, the printer is set for automatic head alignment. If the printing results of automatic print head alignment are not satisfactory, perform manual head alignment.
The procedure for performing manual print head alignment is as follows:
Note
•
If the disc tray guide is open, close it.
•
The pattern is printed only in black and blue.
 Print Head Alignment
1.
Open the printer driver setup window
2.
Click  Custom Settings  on the Maintenance  tab
The  Custom Settings  dialog box opens.
Note
•
If the printer is off or if communication between the printer and the computer is disabled, an
error message may appear because the computer cannot collect the printer status.
If this happens, click  OK to display the most recent settings specified on your computer.
3.
Switch head alignment to manual
Check the  Align heads manually  check box.
4.
Apply the settings
Click  OK and when the confirmation message appears, click  OK.
5.
Click  Print Head Alignment  on the Maintenance  tab
The  Start Print Head Alignment  dialog box opens.
6.
Load paper in the printer
Load three sheets of A4 size or Letter size plain paper into the cassette 2.
7.
Execute head alignment
Make sure that the printer is on and click  Align Print Head.
Follow the instruction in the message.
Important
•
Do not open the operation panel while printing is in progress.
237 
						

							8.Check the printed pattern
Enter the numbers of the patterns with the least noticeable streaks in the associated boxes. Even if the patterns with the least noticeable streaks are clicked in the preview window, their numbers
are automatically entered in the associated boxes.
When you have entered all the necessary values, click  OK.
Note
•
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical
streaks.
(A) Least noticeable vertical streaks
(B) Most noticeable vertical streaks
•
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable
horizontal streaks.
(A) Least noticeable horizontal streaks
(B) Most noticeable horizontal streaks
9.
Confirm the displayed message and click  OK
The second pattern is printed.
Important
•
Do not open the operation panel while printing is in progress.
10.
Check the printed pattern
238 
						

							Enter the numbers of the patterns with the least noticeable streaks in the associated boxes.Even if the patterns with the least noticeable streaks are clicked in the preview window, their numbers are automatically entered in the associated boxes.
When you have entered all the necessary values, click  OK.
Note
•
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical
streaks.
(A) Least noticeable vertical streaks
(B) Most noticeable vertical streaks
11.
Confirm the displayed message and click  OK
The third pattern is printed.
Important
•
Do not open the operation panel while printing is in progress.
12.
Check the printed pattern Enter the numbers of the patterns with the least noticeable stripes in the associated boxes.
Even if the patterns with the least noticeable stripes are clicked in the preview window, their numbers
are automatically entered in the associated boxes.
239 
						

							When you have entered all the necessary values, click OK.
Note
•
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable
horizontal stripes.
(A) Least noticeable horizontal stripes
(B) Most noticeable horizontal stripes
Note
•
To print and check the current setting, open the  Start Print Head Alignment dialog box, and click
Print Alignment Value .
240