> This means a sheet of glass with the IR receiver on top tracked
> by an IR transmitter below, something I instinctively thought from
> the gitgo might the most reliable. A little bit more mechanics but
> not a big deal for getting a better result
>
> Joe
> --
>
>
At that point it would be interesting to see if you really needed to
have both the emmiter and detector track on the X-Y scan.
May be able to move the detector along the top and simply
illuminate the entire bottom of the page with IR....

Actually, depending on environment, users, and the type of
glass you use for the bed, it may be better to put the detector
under the glass to keep it cleaner. Obviously that increases
the distance between the page and the detector, so it may
have resolution consequences.

-Denny
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