C5800 printing vertical lines through pictures Prints words and documents just fine. When printing pictures or logos, there are vertical lines running through. These lines are not of any one formation either. They simply appear randomly throughout the pictures or logos. This printer has been sitting without use for a couple of months. Thinking that I might need new ink. Please advise.

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The thin lines are caused by a worn out drum. Remove each drum in turn and look at the surface. It maybe hard to see the scratches and if so then send solid blocks of the primary colours one at a time and that will prove which drum is at fault.
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