I have a Samsung m2835DW mono laser printer that is ghosting. In a test with a thick horizontal line at the top of the page, the line is ghosted repeatedly 78 mm below, eventually fading out completely at the bottom of the second (empty) page. The circumference of the image drum is ~78 mm, and I'm tempted to replace it, but I read comments elsewhere that a bad fuser can also cause this (but the print is not smearing). If I could end up replacing both, I might as well buy a new printer. I hope someone can save me from wasting money.