[sane-devel] problem with epson driver: noise in scans

[Karl Heinz Kremer]

I have never received any reports about problems with noise in 
scans, so I would suspect a hardware problem. What confuses me
is that your problems only show up in binary scans. if it's
really a hardware problem, it should be more obvious with
color scans.

Can you eiher provide a link to a sample, or send it to me as
an email attachment?

Karl Heinz


On Sat, Jun 15, 2002 at 10:21:39PM -0700, Henry House wrote:
> I am having a problem with an Epson Perfection 636 scanner (SCSI) and SANE
> 1.0.7. The OS is Debian GNU/Linux. The problem is that scans have what looks
> horizontal lines of random white and black pixels all over the scan. (Sample
> available upon request.) This occurs in all resolutions I have tried but only
> in the binary mode. (Color scans fine.) I have checked SCSI termination and
> it appears to be fine, though I have a suspicion that the Linux driver for
> the machine's on-board SCSI (AM53/79C974 PCscsi) is flakey.
> 
> Does anyone have any ideas?
> 
> -- 
> Henry House
> The attached file is a digital signature. See <http://romana.hajhouse.org/pgp>
> for information.  My OpenPGP key: <http://romana.hajhouse.org/hajhouse.asc>.



-- 
Karl Heinz Kremer                                  khk at khk.net
PGP Key at                 http://www.khk.net/download/khk.asc
EPSON Sane Backend:                         http://www.khk.net
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