[sane-devel] Hello, I am Fedora user using SANE for my DocketPort 685

烏小龜 mimisturtle at gmail.com
Mon Nov 21 04:06:28 UTC 2011

Hello, at first I have to thank you for reading my problem and give me
direction ^^

Double the width works, I can get both side in one image at  the same time.

But there is one another question . When I set the image to gray-scale
image (pgm)  by "scanimage -x 212 -y 120 --format=pnm > output.pgm"

Things goes very well. But if I set the image to color image(ppm) by
"scanimage --mode Color -x 212 -y 120 --format=pnm > output.ppm"

There seems to be some noises on the image. There are serveral yellow lines
on the front-side image of my name card, and the back-side is a good one.

I've also changed "-y 120" to "-y 90" range to "-y 140", and it didn't work.

Belows are my output image on dropbox .

Could you kindly tell me how to make the image good? Thank you ><



2011/11/15 Stef <stef.dev at free.fr>

> Le lundi 14 novembre 2011 07:17:23 m. allan noah a écrit :
> > According to our support page:
> >
> >
> http://www.sane-project.org/cgi-bin/driver.pl?manu=syscan&model=685&bus=any&
> > v=&p=
> >
> > the backend does not fully support duplex:
> >
> > "front- and backside side-by-side, with backside mirrored horizontally."
> >
> > Have you tried making your requested image wider?
> >
> > allan
> >
>         Hello,
>        I confirm that the genesys backend doesn't handle duplex. The two
> sensors
> are used as a single wide sensor. When using full scan area width (which is
> about the double of the width of A4), you 'll get front picture on the left
> side, while the back's one will be on the right top down. So you'll have to
> cut the scanned picture in two and filp one of the parts.
> Regards,
>         Stef
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