Canon PIXMA TR4720, Online Manual, Page: 463 / 542

Step6
Replace the FINE cartridge.
If problem is not resolved after performing print head deep cleaning twice, the print head may be damaged, or ink may have run out. Replace
the FINE cartridge.
Replacing a FINE Cartridge
For details on printing the nozzle check pattern, print head cleaning, and print head deep cleaning, see If Printing
Is Faint or Uneven .
Check5
When using paper with one printable surface, check the correct printable side
of the paper.
Printing on the wrong side of such paper may cause unclear prints or prints with reduced quality.
When you load paper on the front tray, load paper with the printable side facing down.
Refer to the instruction manual supplied with the paper for detailed information on the printable side.
• When copying, see also the sections below: •
Check6
Is platen glass or glass of ADF dirty?
Clean the platen glass or the glass of ADF.
Cleaning Platen and Document Cover
Cleaning the ADF (Auto Document Feeder)
Note
• If the glass of ADF is dirty, black streaks appear on the paper as shown below. •
Check7
Make sure original is properly loaded on platen or ADF.
When you load the original on the platen, load it with the side to be copied facing down.
When you load the original on the ADF, load it with the side to be copied facing up.
Loading Originals
Check8
Is copy source a printed paper by printer?
If you use a printout done by this printer as the original, print quality may be reduced depending on the condition
of the original.
Print from the printer directly, or reprint from the computer if you can reprint from it.
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