Canon PIXMA E304, Online Manual

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Colors Are Unclear
Check1
Are the print head nozzles clogged?
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 If Printing
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 the problem is not resolved after performing print head deep cleaning, turn off the printer and perform
print head deep cleaning again 24 hours later.
• If problem is not resolved after performing print head deep cleaning twice:
Ink may have run out. Replace the FINE cartridge.
Check2
Make sure the ink is sufficient.
• For Windows:
Checking the Ink Status from Your Computer (Windows)
• For macOS:
Checking the Ink Status from Your Computer (macOS)
When a FINE cartridge runs out of ink, replace it with a new one.
Check3
Is FINE cartridge installed properly?
If the FINE cartridge is not installed securely, ink may not be ejected correctly.
Retract the output tray extension and the paper output tray, open the cover, then remove the FINE cartridges.
Then install the FINE cartridges again. Push up the FINE cartridge until it clicks into place.
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