A half inch wide black line prints in the center on the back side of the paper. I have performed interior and bottom plate cleaning per canon's instructions.Bottom plate cleaning several times removes the line for the most part but it reappears after printing about 20-25 pages. Please help.
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I have the same exact problem, on the same exact printer. Unfortunately I have not found the fix. Hope someone comes up with an idea.......
I had exactly the same problem. it appears ink (a LOT of ink) is getting on one of the paper rollers. It will go away after running a few sheets of paper through it, but reappears - I think when the print heads are cleaned. I never received a "waste ink tank fullI" message on this machine. Called Canon - returned the printer under warranty - replacement works fine.
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