[sane-devel] portable sheet fed scanner listening 24/7?

Mark Van den Borre mark+sane at markvdb.be
Mon Jul 5 19:25:17 UTC 2010

Hi list,

I wonder if I can have my portable sheet fed scanner permanently listening for
a page to be fed, then auto start scanning it when it senses the
presence of a page. (My scanner is a Xerox  Travel Scanner 100, usb
0x04a7:0x04ac , Genesys GL841 chipset).

I've been looking into scanimage --page-loaded , but that doesn't seem
to be implemented for the genesys backend.

I could keep on spawning new scanimage processes every time the
previous one successfully exits after scanning or dies with exit
status 9 of "scanimage: sane_start: Error during device I/O" after not
getting any sheet fed. I just worry that this might kill my
lamp/scanner within weeks or months. Can I safely ignore that risk?

while true; do
 echo "Spawning a scanimage process."
 scanimage --format=tiff > $(date +%Y%m%d%H%M%S).tif

This does the trick, but it feels ucky...

Any hints or help appreciated!

Mark Van den Borre
happy sane user

Mark Van den Borre
Noormannenstraat 113
3000 Leuven, België
+32 486 961726

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