Then I should probably give an update. My branch of gutenprint at https://github.com/sliedes/gutenprint/tree/msg-20250719 (tagged as of today) is a bit of a mess, but the printer is there and seems to work it can print, but doesn't seem to want to use gray, and the colors are obviously off (like red becoming orange). I didn't manage to understand the code well enough to grok how to make it use gray. I haven't done any color or dot size calibration I also don't know if all the paper sizes etc. are...
I got it to work by cloning the XP-15000 driver, including at 1440 dpi, though not yet with all the nozzles aligned (I think "headOffset").But I didn't get it to use Gray. Looking at the ink xml files: <InkName translate="text" name="CMYKk" text="Six Color Photo" InkID="OTHER"> <Channels> <channel name="claria_photo_black" index="0"> <subchannel color="0" subchannel="0" name="Black" text="Black" translate="text"> <ChannelDensityParam name="BlackDensity"/> <SubchannelTransitionParam name="LightBlackTrans"/>...
Are you sure it requires ESC/PR? I tried some things with my ET-8550, and here's my current impression of things; but I would assume you would have much more insight on this. I've been reading Gutenprint source code and would be happy to experiment with this, so any pointers would be appreciated. The proprietary Epson driver sends RGB data to the printer. It uses the sometimes mentioned and dreaded RHV2 compression. In any case, just by changing the compression type I was able to get it to take uncomperssed...
[patch] HTML export: Prevent page breaks inside boards when printed
Font selection weirdness in Windows