czynot wrote in post #11279150
I seen this on my canon printer. This marks are made by the rollers. This happens when ink dont dry fast enough.
I know this because I when i use the HP premium paper, the ink dont get absorbed fast enough. the roller will pickup the wet ink off the paper. I didnt have this problem with HP glossy paper. only with premium paper. I switch papers and it was fine.
This doesn't make a lot of sense, really, as inkjet printers use incredibly thin and star-cut roller offsets to ensure that the paper never contacts the rubber transport rollers within the handling scheme of the paper-transport mechanism before it's delivered as a final print. These star-cut offsets are in place to ensure that already-printed material does not have to come in contact with the outfeed mechanisims of any given printer, and are normally found in the outfeed mechanism as a part of the printing process which relies on an already printed and dried portion of the page.
Check the vacuum of the platen, as already suggested, adjust the printhead height, as also already suggested, double-check the paper thickness and adjust accordingly, as suggested, and look into paper thicknesses and ambient humidity levels. Humidity can easily swell any given paper, turning it into a curling or misshapen bit of a problematic thing.
Outfeed rollers will completely smear and smudge prints, but they will not produce the patterned results already shown. Only a printhead carriage making contact with the paper will produce the results already shown, unless there's another serious malfunction with the printer's paper handling.