Just in case this information could be helpful (related to the
suggestions by Mark and Godfrey):
I've been printing from CS6 from a Windows computer (Photoshop ver 13.0
x64) on Epson R2880 without any problems related to banding.
That's the version from "About Photoshop". So, I don't think any updates
were installed. But then Mac and Windows versions could behave
differently.
I just checked the most recent photo-cards I printed from PS, and they
were printed at 400 PPI and 308 PPI (as reported by PS).
I am printing with the settings where PS controls the colors using the
appropriate paper profiles.
It does sound like it might be some weird PS - printer driver
communication problem.
This could be due to the driver or due to the PS (more likely the latter,
since you can print just fine from another program.).
I can think about two things to try:
1. Move the PS configurations to a different folder to let it start with
the default configurations (Google how to do that and where that config
file is located, - that is a frequently described procedure for when
Photoshop refuses to start.) Sorry, I am not sure about location of those
files on Mac.
2. If that doesn't work, try reinstalling the printer driver.
I have my doubts that it is the installation of the driver, so, I am not
sure if #2 would help, but ...
HTH,
Igor
PS. I wonder if Epson salt would be helpful for Epsom printers. :-)
Postmaster Tue, 02 Jul 2019 11:26:05 -0700 wrote:
<snip>
No? All right then. My best guess is that Photoshop is having some
kind of disagreement with your printer driver. You should check that
you have the latest driver for your printer and also see if Adobe
issued any updates/patches for Photoshop CS6 that you haven't
installed.
If none of that works you could try re-sizing the image to the desired
print dimensions at 720ppi output resolution (the native hardware
resolution for Epsom printers).
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