I mentioned to just use the Gutenprint mailing list, but I was downvoted. They are at least a bit more likely to minimally look at the proprietary driver (no on

I mentioned to just use the Gutenprint mailing list, but I was downvoted. They are at least a bit more likely to minimally look at the proprietary driver (no one of the commenters here did), or even remember by heart a similar model with the exact same interface (which is rather likely to exist).