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TR4520 poor quality using scan-to-pdf utility

pwrichcreek
Enthusiast

The printer is 6 to 12 months old, usage is moderate, scan-to-pdf is infrequent. Recently the quality has degraded significantly.
Added 12/17
The problem wasn't with the scanner. I had copied the originals "on top of the previous copy" several times. So the quality of the copy that I was working with degraded with each scan. In addition, the ink had nearly run out, which degraded the quality even further. Once I replace the ink cartridges, the problem was gone.

EXAMPLE OF POOR QUALITY
canon printer support poor quality scan-to-pdf.png

I suppose it could simply be a matter of the device's scanner wearing out, but it seems like it wouldn't wear out that much in less than a year, right? I expect that even if it could be repaired, I'd not go that route because it would not be justifiable economically.

TIA for you help.
SweetTasha.

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