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[sindi keesan <keesan AT sdf.lonestar.org>]

> > Isn't it possible to add something to your script to resize it before
> > sending it to pbmtoppa?
>
> The maintainer of netpbm suggested a cropping program.  I will try shortening 
> the 11.69" scanned page to 11" if there is some way to crop 1 pixel at a 
> time.  I would need to make it 414 pixels shorter for US Letter size. 
> Scanjet works in multiples of 1.52588e-05 mm instead of pixels.

-b is for -bottom or you can use -h for -height to shorten a page

pamcrop -b 6599 crops to 6600 pixels, I think (at least -b 6600 crops to 
6601) but now the printer is flashing the ink light at me which implies 
the colored ink finally evaporated (or primed itself away) and the dratted 
thing won't print black unless there is colored ink in it.  Does anyone 
know of a 600 dpi DOS inkjet printer not made by HP?  Would black ink in 
the colored wells fool it?

scanimage --resolution 600|pamcut -b 6599|pbmtoppa > /dev/lp0

Fairly quick conversions.

Or I could instruct the scanner to use a different multiple of mm when 
scanning - 279.288 or .290 seems to produce 6600 pixels height, which 
might be a bit faster than converting.

The possibilities of netpbm are endless - mix and match.