[sane-devel] Perfection 610: cannot scan in color

[Evil Mr Henry]

Also, for anyone else with this problem, this works in XSane when I set 
the scan size to DIN A4 port.

On 01/08/2013 11:19 PM, Olaf Meeuwissen wrote:
> Evil Mr Henry writes:
>
>> Basically, "scanimage -v -d epson2:libusb:003:005 --format png >
>> outfile.png" works, but "scanimage -v --mode color -d
>> epson2:libusb:003:005 --format png > outfile.png" throws the classic
>> "invalid argument"
>
> Shouldn't that be "--mode Color", with a capital C?
>
>> (It is, in fact, an Epson Perfection 610 USB scanner.)
>>
>> This is a new computer; the scanner worked on my old computer in much
>> the same setup.
>
> What version of sane backends and which backend did you use there?
>
>> Running Mint (Ubuntu) 64bit, Sane 1.0.22-7ubuntu1
>>
>> The following is the output after setting "export SANE_DEBUG_EPSON2=255":
>>
>> scanimage -v --mode color -d epson2:libusb:003:005 --format png >
>> outfile.png
>
> I've gone through the log and it's clear from that that this is a bug in
> the epson2 backend.  It fails to take into account the line distance
> when computing the maximum scan area, leading to a maximum that is too
> big.  You can work around the issue by using "--br-y 297.18" (i.e. 11.7
> inches).
>
> Hope this helps,
>