However, 0.5inch is not acceptable. I'd suspect a
mechanical defect. You might check the total scanning area with sheet of
raster paper.(Not very precise
though). And check whether this problems shows up
under Windows, too.
The y-coordinate zero (referenced to the triangle
at the top *right*) is just multiplied by a scale
factor and otherwise unaltered embedded in the
SET_WINDOW command. AFAIK that value is interpreted
as an unsigned number, so a negative offset (which
would be necessary in your case) can't be specified.
Oh, just to be sure we are thinking of the same
edge: By "left" you mean left edge of a sheet, so
when placed face down it's the right edge of the
scanning area, isn't it?
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