what is the cause of these printing marks ?

This is closeup of 24'' print from canon ipf 6100 printed on hahnemuhle fine art pearl. the marks run down in 3 places on a photo always in the same part of paper.Just got the printer. printed a total of 6 pics, 3 with canon paper and no marks, 3 with hahnemuhle and 2 out of 3 with marks. Canon support was not much help. they basically want me to keep trying different things till I run out of paper and ink.
They say hard to tell when its not a canon paper. Has anyone seen this before and knows how to fix it also what are these marks called? Pleasehelp

HOSTED PHOTO
please log in to view hosted photos in full size.

how does the printer moves the paper? Does he use rollers? But then i would think the marks should be straight .
Is this paper thicker than the canon paper?
On my Epson I can set the “gap” for thicker paper, maybe that’s something you can adjust too.


Or it is already on the paper? Did you check the paper before you print.

Rainer

rainer, its not on the paper.it must use rollers of some type. the marks are straight down the paper they just start out narrow get wider gradually and then narrow off to nothing. the paper is thicker than the canonbut I have it set in printer driver to what hahnemulhe says which is HW semi-gloss photo paper 2. How do you set the gap in yours ? Is it the carrige adjustment or vacume adjustment cause canon suggested to try them. also from what I understood from the canon support tech was that setting the media type in priter driver sets the gap or am I wrong

For my Epson 4880 it is in the printer driver settings
In the paper section or in the customs settings.
Depending on the paper type the gap is set but I can also change this setting to be more wide or more narrow.
I am not sure where to set it on a canon but I guess it is in the printer driver settings as well were you set the paper type and so on.

On my Epson it is called platen gap.

Hope this helps

Rainer

Is the paper flat? If not it might be the print head touching the paper on each pass. Some of the Hahnemuele papers are very thick, which could agrevate the problem.

Looks like the printhead/carriage is contacting the paper in the center.

I have no experience with the mentioned paper or printer, but I
have serviced many inkjet printers over the years, and I have seen this before.
Most likely, something is causing the paper to not be flat, causing it
to bulge up during printing, in turn causing the printhead carriage
to contact the paper during the print process.

Try checking the suggestions already given, as well as ensuring humidity
levels are not so high as to cause the paper to swell.

Try this: http://www.largeformat​photography.info …thread.php?t=32​504&page=2

Maximum paper thickness is 1.5 mm according to Google.

talked to canon tech again, he said to change paper type in printer menu from hw semigloss photo paper to polised rag because the polised rag is a thicker paper, 300gsm, 15 mil which is close to hm fine art pearl. And to set vacume to highest. I did both and it is still showing up but only in one place and not three like before. I guess my next move which he said to try is adjust the print head from auto to high

Vacume? As in Vacuuming the carpets? Thats clever. On both my Epsons the platen gap could be adjusted seperately to any profile setting but if the paper is not totally flat then it is/was doomed.

But its taught me to be very careful how I store the paper, which has to be a good thing.

yes vacume, it holds the paper down and has like 5 setting

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.

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.

Ouch! Yeah, I'd stay away from papers that are not profiled for use with your printer, for sure, or at least have some statement of support from the paper vendors. Of course, you can strike it lucky, pick up a packet of off-brand photo paper, set your print driver to a generic photo paper setting, and hope for the best, but I've seen a lot of garbage results from that kinkd of approach.

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.

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.

Of course that would happen with HP Premium paper! That paper was designed for specific HP ink in older generation HP printers like my own HP 8750. It's extremely slow drying.

But my question is, why in the world are you trying to use HP paper in a Canon printer? You wouldn't have a profile for it unless you had one made.

I was given box of HP premium papers than HP Advance papers. It was free so why not use it.
The Premium do not absorbe the ink and was picking up by the rollers, But the HP advance work fine. No problem. HP premium paper sucks with Epson ink.
Ofcouse I needed to do some calibrating to match the printer and the paper. The prints came out fine on HP advance paper.
I am not saying JayT is using the wrong paper. I think the problem I see with JayT post is similar (roller picking up the wet ink off the paper). I could be wrong but try use Epson paper and see what happens.