tachus-good point - the angle affecting dot shape. i am probably not going to build anything like that 4 color printhead. i am allready looking at a system that will allow much smaller amounts of paint to be delivered to much smaller spaces. possible a thin plastic or metal 3" ring being driven through a pool of paint, and past some very small nozzles. with 3-4 nozzles, i can make much smaller circles.
if i try to use HP RTL, how do i take the info from a generic driver and store it, and then print it? can i emualte all that in software?
i am a fairhand at "PicBasic" style microcontroller programming..
for now i am going to just build the roving gantry, as i have all the parts on my table.. just gotta take the time to do it right or it will go in circles! any slop in build on this guy will show after a foot or so of movement.