IT takes special sproketed thermal paper (which
is unobtainium nwo, I
have a few boxes I use for demonstrations). There's one stepper motor
driving a sproketec roller to feed the paper. And anotehr to move the
printhead across the paper.
I believe you can easily make a machine to turn fax paper into
sprocketed paper :)
For suitable values of 'easily' :-)
Actually, it;'s not as simple as that. One sprocket hole every so often
on the left edge of the paper is elognated across the paper a bit
(prehaps to twice the hromal width). This is detected by the plotter and
used as the top-of-form marker.
-tony