Canon PIXMA iP8750 - Manual (Page 303)

Colors Are Uneven or Streaked
Colors Are Uneven
Colors Are Streaked
Check1 Did you confirm the paper and print quality settings?
Print Results Not Satisfactory
Check2 Print the Nozzle Check Pattern and perform any necessary maintenance
operations such as Print Head Cleaning.
Print the Nozzle Check Pattern to determine whether the ink ejects properly from the print head nozzles.
Refer to When Printing Becomes Faint or Colors Are Incorrect for the Nozzle Check Pattern printing, Print Head
Cleaning, and Print Head Deep Cleaning.
• If the Nozzle Check Pattern is not printed correctly:
Check to see if a particular color's ink tank is not empty.
If the Nozzle Check Pattern is not printed correctly though ink is sufficient, perform the Print Head Cleaning
and try printing the Nozzle Check Pattern again.
• If the problem is not resolved after performing the Print Head Cleaning twice:
Perform the Print Head Deep Cleaning.
If the problem is not resolved after performing the Print Head Deep Cleaning, turn off the printer and
perform another Print Head Deep Cleaning after 24 hours.
• If the problem is not resolved after performing the Print Head Deep Cleaning twice:
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