Colors Are Unclear - Canon G4000 series Online Manual

Colors Are Unclear

Is nozzle check pattern printed properly?
Check1
Print the nozzle check pattern to determine whether the ink ejects properly from the print head nozzles.
For details on printing the nozzle check pattern, print head cleaning, and print head deep cleaning, see
Is Faint or Uneven.
• If nozzle check pattern is not printed correctly:
After performing the print head cleaning, print the nozzle check pattern and examine the pattern.
• If problem is not resolved after performing print head cleaning twice:
Perform print head deep cleaning.
• If problem is not resolved after performing print head deep cleaning:
Perform system cleaning.
System cleaning consumes a great amount of ink.
Frequent system cleaning can rapidly consume ink, so perform system cleaning only when necessary.
Important
• Performing system cleaning when the remaining ink level is not enough may damage the printer.
Before performing system cleaning, check the remaining ink level of all colors. If the remaining ink level
is below the single dot (a), refill the ink tank of corresponding color.
◦ From computer:
■ For Windows:
Cleaning the Print Heads
■ For Mac OS:
Cleaning the Print Heads
◦ From operation panel:
Performing System Cleaning
If the problem is not resolved yet, the print head may be damaged. Contact your nearest Canon service
center to request a repair.
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If Printing