Canon Pixma TS3440 Series Online Manual page 226

• When copying, see also the sections below:
Is platen glass dirty?
Check6
Clean the platen glass.
Cleaning Platen and Document Cover
Make sure original is properly loaded on platen.
Check7
When you load the original on the platen, load it with the side to be copied facing down.
Loading Originals
Is copy source a printed paper by printer?
Check8
If you use a printout done by this printer as the original, print quality may be reduced depending on the condition
of the original.
Reprint from the computer if you can reprint from it.
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