[sane-devel] Degrading images: Plustek OpticPro UT16

rhn samali.rhn at porcupinefactory.org
Fri Sep 23 09:34:54 UTC 2016

On Fri, 23 Sep 2016 10:40:35 +0200 (CEST)
Johannes Meixner <jsmeix at suse.de> wrote:

> Hello,
> On Sep 22 18:33 rhn wrote (excerpt):
> > the scanner I am using has a peculiar problem, where scanning
> > consecutive images causes the image quality to degrade:
> > the left part becomes yellow in vertical streaks that increase
> > in numbers; the right part becomes red. To get a completely
> > yellow-red image, about 10 scans are necessary, regardless
> > of options.
> > The backend for this scanner is plustek.  
> at openSUSE we have an issue report with similar symptoms
> but different backend (HP Scanjet 2400, genesys backend):
> https://bugzilla.opensuse.org/show_bug.cgi?id=905034
> I was unable to reproduce it or debug the root cause
> so that all I did was basically blind guess, e.g. see:
> https://bugzilla.opensuse.org/show_bug.cgi?id=905034#c18
> Kind Regards
> Johannes Meixner

Thanks for pointing out that bug report.

I think that my issue might be different. I forgot to mention, but starting a new scan (second scanimage command) yields the same results, i.e. first 2 pages are fine.

I managed to get the git build to run locally, and I'm testing it, so my initial question is answered.

I suspect my hardware is shot and needs extra resets. Is there any other user of UT16 that can confirm?


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