[vacpress]

you could fairly easy create a 4 color spray-type inkhead.. to do it you have to do a few things.

1-break down the image into CMYK files. Process these files to create graduated xyz coordinate files that send the required pulses to move the gantry, and release the proper amounts of ink or paint or whatever through nozzles. inkjets have it easier cuz they dont need to regulat flow i dont think, they jsut use different lengths of time since it happens so fast? i could picture 4 dual-action airbrushes with 2 high speed hobby servos as actuators on each airbrush. dual action airbrushes allow for both pressure and flow controls. exactly what is needed. these servos are closed loop positionable, so they can be programmed with a PIC or other microcontroller to recieve a color demand and use a lookup table or several to produce the right amount of pressure, flow and color mixture... ideas on this?