[clug] SANE and scanners

[Simon Oxwell]

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