MG3620 double printing issue

[nct753]

When I print the Windows Printer Test Page, one of the lines is actually printed twice on top of each other, slightly offset.  This happens when I print other documents too, but only for certain lines of text, not the whole document.

Most barcodes are also "blurry" when printed, and I think it is doing the same thing; double printing the barcode on top of each other.

I downloaded and reinstalled the printer driver, and it did not fix the issue.  The first photo is of the "print test page" during the installation process that I scanned. The second one is the "Windows print test page" also scanned.

Is there a fix for this?

 

[shadowsports]

Greetings,

Please check your encoder strip.

Canon Knowledge Base - Cleaning the Encoder Film - MG3620

[nct753]

Thank you for your response!
The Encoder Film is clear with no smudges or dirty spots, but the "rail" seems to have some "distortion" at the top edge toward the right side, and about 3" long.  It is not uniform in height and "smooth" like the rest of the rail ? ? ?

[nct753]

I replaced the black ink cartridge, and the issue went away. Somehow the cartridge was causing the issue, and it wasn't a clogged head since it was printing, but printing fuzzy characters and barcodes, and even wavy vertical straight lines.