[sane-devel] Mustek BearPaw 1200CU Plus: red saturated regular vertical lines in the output.

[Alexander Antimonov]

sane-find-scanner: vendor=0x055f, product=0x021c [USB Scanner],
chip=GT-6816.

The long story short - see attachments:
linux-photo.jpg - a part of a photo scanned in linux;
windows-photo.jpg - the same part of a photo scanned in windows;

the lines are vertical for the scanner portrait orientation.

To scan in linux I used all available on my system utilities: xsane,
simple scan, scanimage. Resulting output is the same (with red lines)
for all of them.

Firmware: 3 different in size PS1Dfw.usb files: one taken from here 
http://www.meier-geinitz.de/sane/gt68xx-backend/firmware/PS1Dfw.usb,
other two - from a scanner install disk.
No significant difference in the output.

In windows I used TWAIN driver and other software from the install disk
shipped with scanner.

I did not succeed in completely removing the lines by adjusting color
gamma, brightness, contrast, etc. The lines changed their color or
intensity but remained visible anyway. I even see them in a grayscale
output as alternate light and dark lines.

How to make (x)sane output looks more/exactly like output made in
windows?

Thank you.


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