Hello Rainer, > >> First some background: I'm using 64-bit openSUSE 13.1 and SANE 1.0.23 >> (provided by the packet manager) along with an HP ScanJet 5590 scanner >> and have been running into some problems lately with the ADF unit. > You wrote "lately". Does this mean the behavior has changed? I make similar > experiences as you described but I have them from the beginning. Well, I'm not sure when it started to appear, since other people have used the scanner before me and it's only been a few months that I was assigned to take care of the problem. I suppose it must have been there since the beginning, and it just went by unnoticed. > >> After >> some 20+ pages have been scanned, the bottom of one page starts to show >> up in the next one. > My observation is that the scanner scans about 5 mm more than expected. This > is not depending on the papersize. This means with every page you see 5 mm > more of the next page at the bottom of the current page. But for me this > start > directly with the first scanned page. I've also observed something similar on my end, but it's always a random amount of pixels that end up getting added at the end (or start, I'm not sure) of the image. So just setting a bigger page size wouldn't work. > >> Is there a reason this is not used by SANE to separate the pages? Or >> were you just unaware of this resource? > As far as I can see there is no "page change" notification in the API. At > least > I didn't find it when trying to change the driver. The driver is given the > expected page size and has to deliver exactly that amount of scanned lines. > If the scanner provides more lines for whatever reason it does not handle > that. Each page is separated by the scanimage tool by counting the scanned > lines. Maybe the "page change" notification as you put it is nowhere to be found in the API because it's already there in the image (i.e. the blue pixel).
Best, Augusto -- sane-devel mailing list: [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to [email protected]
