Visual glitch when printing with an Epson XP-960 / 3800

[rjones0]

This issue was originally reported by user LarryK but I also see the same issue. When printing to my Epson XP-960 I get a visual glitch along the right edge of the print under certain circumstances. I will copy and paste my comment from the Lightzone website below which should explain the issue:
http://lightzoneproject.org/lorum/bug-epson-3800-driver-lightzone#comment-9214

I have an EPSON XP-960 and I am reasonably confident I have narrowed down the source of the problem, and also have a workaround that works for me. Perhaps it will also work for someone else.

The problem seems to be related to a setting I have within the Epson print preferences - specifically Method of Enlargement which is either Auto Expand or Retain Size. If I choose Retain Size I see the problem. If I select Auto Expand I do not. Instructions to fix: from the Lightzone Print dialog:

1. Print

2. Preferences

3. Check the Borderless check box

4. Click Settings next to Borderless check box

5. Select Auto Expand in Method of Enlargement panel

6. Click OK and OK

I will attempt to log this in github. I have a little experience of image processing and to me it looks like there is a loop that has a mismatch between the number of pixels it expects to be in a row, and the number that are actually there - I've seen a similar ripping effect, and that time it was faulty loop counting in my code. Image processing can bend your mind sometimes!

Anyway, I love this software. Many thanks to the team :)

[rjones0]

[rjones0]

Screenshot of what I see in print preview when the problem manifests. I do not see this if I use Auto Expand in the Epson preferences.

[MJacal]

As much as I would like this to work for you, I would, in your place, prepair the photos to be printed with optimal settings (format, colour profile etc.) and use another program for printing (the one, that comes with the printer, or something else).

With the limited an precious development time, fixing this without the actual printer at hand, probably without the same version of your OS (?) and the drivers, looks quite hard and time consuming to me.