[sane-devel] ADF jam creating empty output files

[Lonny L. Granstrom]

Hello,

1st post. Developer question.

Using scanimage, scanadf, and fujitsu back-end, specifically model  
fi-4220C2.

When an ADF "Document feeder jammed" error occurs I am catching the  
return code and STDERR message.
Then, allowing Users 15 seconds to clear jam before beginning  
scanning loop again.
Program written as BASH Shell script.

Problems:
1. scanimage & scanadf both create an output file for the document  
that was not completely scanned due to ADF jam.
2. Output file is "blank". ImageMagick identify command finds image  
file construction correct, just empty.
3. These "blank" files occur in both PNM & TIFF formatted output.

Should I code to remove the last output file produced every time the  
"Document feeder jammed" occurs?
Is there another method or parameter to use to eliminate these "blanks"?

Regards,
Lonny L. Granstrom