[sane-devel] Support for CanoScan 9000F and others: TPU negatives scan

[Rolf Bensch]

Hello all,

For CS8800F and CS9000F I just committed tpu negatives scan for color 
and grayscale images to git.

This code sets the appropriate byte in the scan image command.

There is no negatives -> positives conversion available. Please use the 
appropriate function in Xsane or any other exteral program.

Cheers,
Rolf