[sane-devel] dark line in scan

[Bill Jehle]

On Tue, Jul 12, 2005 at 11:50:41PM -0400, Anderson Lizardo wrote:
>
> Bill Jehle wrote:
> > On Sat, Jul 09, 2005 at 04:02:32PM -0700, Bill Jehle wrote:
> > 
> >>I have an HP 6200C scsi when it runs it leaves a brown skidmark down
> >>the left side of the image (see attached brown-line.png). I thought it was a bad lamp but it runs OK
> >>with the HP app on Win2k.
> 
> Hi, I'm the maintainer of the geniusvp2 backend.
> 
> Hm... I have this very same problem with my backend. I thought at first
> I've damaged the sensors while cleaning the mirror on the carriage,
> because I was almost sure I've never seem that dark line before that...
> 
> The interesting here is that we have totally different scanners (mine is
> a Genius ColorPage-Vivid Pro II) and backends, but the same problem. The
> difference is that on my case the "dark line" is black (not brown). And
> in my case, scanning on Windows also shows that line, although it's
> almost invisible probably because of gamma correction which my backend
> does not support yet.
> 
> My guess would be badly calibrated ADC...
> 
> - --
> Anderson Lizardo

thanks Anderson, I was hoping it was a software problem but alas
 after 5 years I guess it will need to be put out to pasture. 

-- 
http://billjehle.com