Canon 3747B003 User Manual page 119

If you press the
ON button to turn off the power, the machine caps the Print Head (nozzles)
automatically to prevent from drying. If you disconnect the power plug from the wall outlet or turn
off the extender cable connector before the Power lamp is turned off, the Print Head will not be
capped properly and this will cause drying or clogging.
To disconnect the power plug, be sure to follow this procedure.
Print periodically!
Just as the tip of a felt pen becomes dry and unusable if it has not been used for a long time,
even if it is capped, the Print Head too, may become dried or clogged if the machine has not
been used for a long time.
We recommend you to use the machine at least once a month.
Note
Depending on the type of paper, ink may blur if you trace the printed area with a highlight pen or
paint-stick, or bleed if water or sweat comes in contact with the printed area.
Colors are uneven, and print results are blurred.
Tip!: Print the nozzle check pattern to check if the nozzles are
clogged.
If the print head nozzles are clogged, colors may become uneven or the print results may be blurred.
In this case
Print the nozzle check pattern
Check the printed check pattern to see if the nozzles are clogged.
See
When Printing Becomes Faint or Colors Are Incorrect
.
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