So I have a konica minolta 3730 printer... I unfortunately didn't do enough research before I bought it.
It is in fact a lavaflow printer, but not quite. It starts out looking more or less right (there is only one esc%-12345X instead of one per line), but then the raster data starts with escape code esc*b[number]W [DATA], instead of esc*b[number]V [DATA].
I've put example output at http://www.bobdbob.com/~tjohnson/misc/magicolor-email.dat
So before I really dive into it, does anyone have an already established clue and can go "Oh Yea...", and makes it go?