I use a Brother Q570 Label printer to label my roasts. Overall it works quite nicely with Roastmaster. I experimented and tweaked till I wound up with an xml template that prints a 1 1/3 in high label on my 2 3/7 inch wide label rolls.
The only limitations are:
1) the Font Size is smaller than I want, especially the date, which is hard to read.
2) It's a B&W printer. Using the default settings, some of the printing comes out too light (because it's not "black"). I mostly solve this by printing at darkest setting and highest contrast, but it would be good if I could set the label to print as pure B&W.
I'd love it if I could set some of these parameters in the xml template (or elsewhere).