I occasionally forget to have photoshop control the printing.
Most times this has a bad result but every once in a while I like what I get.
I have attached the file I tried to print.
The print itself was much lighter and had much more vibrant colors.
I have attached a crop from a scan.
I would like to pursue this and figure out what is going on so that I can control the process.
Most recently (on a Mac) the color management dialogue box had Color Controls selected and Gamma was 1.8.
I've done the same thing on my Epson occasionally - a better watercolor effect than any plugin I've looked at -
Mine was I got stupid and put the paper in wrong side. Another was I told it matte paper and put in luster. I never really thought about playing with doing it on purpose - even when I kept the print cause it looked cool. I gotta pull my head out of the box.