[sane-devel] Genesys sheetfed scanner update

[Jack McGill]

Pierre, 
8 bit depth now seems to be working. I have both the XP100 and DS Mobile set up using the Roadwarrior settings. I am using xsane frontend to run some scans. I have found a couple of bugs
1. On both scanners lineart setting results in an all black image at multiple resolution settings. 
2. On the XP100rev3 I am getting an intermittent horizontal wrap around artifact when set to 8 bit color at 150 and 300 dpi and at 16 bit color at 300dpi. An example of what I am describing is available for download at the bottom of the webpage http://sites.google.com/site/roadwarriorscanner/ file named 8bit_150dpi2.pdf. 

Can you reproduce these bugs on your end with the Roadwarrior?

Jack McGill


--- On Mon, 3/16/09, Pierre Willenbrock <pierre at pirsoft.dnsalias.org> wrote:

> From: Pierre Willenbrock <pierre at pirsoft.dnsalias.org>
> Subject: Re: [sane-devel] Genesys sheetfed scanner update
> To: jmcgill85258 at yahoo.com
> Cc: sane-devel at lists.alioth.debian.org
> Date: Monday, March 16, 2009, 6:00 PM
> Hi Jack,
> 
> Jack McGill schrieb:
> > To list and Pierre,
> > 
> > I recently received a Visioneer XP100, rev 3,  usb vid
> x04a7 pid
> > 0x049b, which has a GL842 chip inside. The model
> number on the 
> > bottom of the scanner is 85-0110-200. This scanner
> works very well 
> > using the Visioneer Roadwarrior settings. I think they
> are identical 
> > twins ;-). Pierre, can you add this scanner to the
> cvs?
> 
> Thanks for testing.
> 
> > Also, I have a Pentax DS Mobile 600 that works pretty
> well using 
> > the Visioneer Roadwarrior settings. I am going to
> tweak some of the 
> > settings, before I ask to have this added to cvs.
> > 
> > I will be getting a DocketPort 485 in a couple of
> days. This is an 
> > A4, duplex scanner. I will try it out using the XP300
> settings and 
> > report back.
> > 
> > Also, if anyone else wants to try out their GL84x
> sheetfed scanner, 
> > 8 bit depth scanning is not working, but 16 bit
> scanning is working. 
> > Pierre recommends the following scanning command:
> > 
> > scanimage -x440 -y50 --resolution 75 --mode color
> --depth 16
> > --disable-interpolation=yes > img.pnm
> 
> The 8 bit scanning problem should be fixed in CVS(Bad
> generic gamma
> table), so --depth 16 can be dropped. (And
> --disable-interpolation=yes
> is there by mistake.)
> 
> Regards,
>   Pierre