I've made a series of prints and got some strange marks on them. I'm printing a panorama as a triptych, and on each of the three prints I've got a strange mark in the corner.
I first printed them as A4, and failed to notice it. How I didn't I don't know - my excuse is that I was focused on shadow detail and wasn't paying attention to the highlights in the corners. I only noticed when I was framing the A3+ = 13"x19" versions. What a waste of ink and paper!
I've attached two images showing the problem. One shows the whole image, with the paper feed direction with a red arrow, and the problem area in a red oval shape. The second shows a close-up of the problem. I am printing on an R1900 with Epson Smooth Pearl using K7SE with the warm opaque black, so a second gloss coat is used. I'm on Windows 7, so using QTRGui.
Unfortunately I don't know whether the problem during the first run with the inks, or the second run with the GO, as I didn't notice until after the GO. This may suggest that it was after the GO, or I would have noticed. The gloss coating, when viewed from an oblique angle, looks ok, so it appears to be under the gloss.
I don't know whether this is mechanical, from the printer, or an ink flow problem, or software related. It looks like it is mechanical, from the paper feed roller. It's in the right position on all six pages. If this was the case, then it couldn't have happened during the ink run because it's on the wrong side for the paper feed roller. If it happened during the gloss run then I must have put all six pages in the printer the other way around, which is possible.
At the point when I noticed this, I needed to refill the carts to do further testing. This meant a head clean of course. I've since reprinted and re-glossed both the A4 & A3+ versions and all six pages seem ok. This might suggest that it was a strange clog problem, but it doesn't look like it. I also had a bit of a play with the paper feed roller around this time, manually rotating it (probably not advisable), which may have unjammed it or something.
My best guess is that it did occur during the feed for the gloss run, with the paper feed roller getting stuck somehow and marking the print during the first part of the feed. My rotating the roller perhaps cleared it.
Have you ever seen this?