Canon PIXMA MX870 - Manual (Page 860)

5. Check the results
To check whether the print quality has improved, click Print Check Pattern. To cancel the check
process, click Cancel.
Important
Cleaning consumes a small amount of ink. Deep Cleaning consumes a larger amount of ink than
Cleaning.
Cleaning the print heads 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, switch off the machine, 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 "
Machine Moves
But Ink Is Not Ejected ."
Related Topic
Checking the Print Head Nozzles
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Page 860 of 1127 pages Cleaning the Print Heads