[sane-devel] Problems with Canon MP990 transparency unit

[Guillaume Courtois]

Le 08/04/2015 11:32, Rolf Bensch a écrit :
> Hi Guillaume,
> 
>> Yes, but the greenish problem (if you refer to that) was really a bug 
>> I
>> believe.
>> One scan from linux and the positive is very greenish.
>> Then one scan from windows and all is ok.
>> Then one scan from linux and all is ok too (same settings of course).
>> 
> 
> After a quick investigation, I found that we don't send the tpu info
> (protocol F520) to the scanner, because we don't have some tpu data. I
> attached the Sane (Pixma) and Windows log files to show the difference.
> 
> If you like, you can investigate the Windows driver for the structure 
> of
> the tpu data set for your scanner.

Hi,

Thanks for the datas. As I'll work on negative scanning, if the greenish 
problem occurs again, I'll try to investigate with them.

Bye.