# Re: Mustek Paragon 1200SP

Tobias Goeller (tobias@combox.de)
Wed, 18 Aug 1999 13:19:00 +0200 (MEST)

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Hello....

On Wed, 18 Aug 1999 becka@rz.uni-duesseldorf.de wrote:

> Hi !
>
> > My problem is that using a mustek 1200SP scsi scanner with sane,
> > gray images work at any resolution without any problems. If I try
> > to scan colour, the image comes out totally scrambled (the colors
> > are really weird, stripes all over the image, etc).
>
> O.k. - could you send me the exact model of your scanner ? /proc/scsi/scsi
> should do, and maybe the output from SANE_DEBUG_MUSTEK=255 from a color scan.

Since the machine is at home, I cannot send the exact
/proc/scsi/scsi now. But the Scanner identifies itself as SCANNER
in /proc/scsi/scsi (where normally the brand stands).

> In case you have one that is identifying itself as MFS12000SP with a firmware
> revision of 1.00, I have a fix for this. I already sent it to David.

yes, could be. think that's it.

> The problem is, that this scanner uses a backlog-type line distance correction,
> which had a very subtle bug that shows up at high resolutions and big scan
> areas.
>
> Try scanning a medium sized area at 50dpi. You should not have problems, then.
> Actually you shouldn't have problems at below 72 dpi anyway.
> If you go beyond that, chances are that you will get horizontal stripes.

correct. I've testet it, till 72 dpi it works without any
problems. Also the Preview is fine.

> In case that does not fit your problem, please have a look at sane-mustek(1),
> which discribes two options for mustek.conf that might help you. Well actually
> one of them might help. The lineart fix isn't really helpful for you.

If you could send me the fix, I would test it tonight....

Thx in advance
Tobias

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    Tobias Goeller                                              " \+/
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