[clug] SANE and scanners

[Rodney]

On Fri, 20 Mar 2015 12:39:09 Simon Oxwell wrote:
> On 20 March 2015 at 12:26, Brett Worth <brett.worth at gmail.com> wrote:
> > On 20/03/15 12:14, Simon Oxwell wrote:
> > > I'm running what seems to be the lastest of the SANE backends  (1.0.24).
> > > I've got things working, but I seem to have an odd brightness issue,
> > 
> > where
> > 
> > > scans are noticeably light on the left and dark on the right. I've made
> > > sure I've run the calibration mode and that doesn't seem to have helped.
> > > 
> > > Anyone have any suggestions? My google-fu hasn't turned up anything
> > 
> > useful.
> > 
> > Is this happening only on Linux?  If yes then ignore the rest of this.
> > 
> > I had a problem with a scanned doing inconsistent intensity across the
> > page which turned
> > out to be a dry joint on the connection to the fluro.  If you put on some
> > welding glasses
> > on (:-)) and watch the light move across the page you might see it
> > changing brightness.
> > 
> > Of course if the gradient is at right angles to the gantry travel it could
> > just be a bad
> > fluro.  Once again you should be able to see that if the brightness varies
> > along the tube.
> 
> Hi Brett,
> 
> Yeah, just In linux, sadly. Windows driver doesn't exhibit the same
> behaviour.   The gradient is at right angle to gantry travel, but is lit
> with LED's, which seem fine.
> 
> 
> Simon

Have you used the driver recommended at http://sane-project.org ?  Perhaps non-intuitively it is Plustek, not 
Canon.

I have occassionally used a Canon 660U, also with Plustek and it w-o-r-k-s, with acceptable quality, if time is 
not of the essence.


Rod