[clug] SANE and scanners

Simon Oxwell soxwell at gmail.com
Thu Mar 19 19:39:09 MDT 2015

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.


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