Oliver Schwartz wrote: > Hi, > >> I've just bought an epson 3490, and download the >> sane-backends-2005-11-10.tar.gz and >> sane-frontends-2005-11-10.tar.gz. >> >> While the flatbed seems to work as expected, the transparency unit >> doesn't. >> >> I want to scan a negative film, but the resulting file is crossed >> by a thick green line. >> I've tried to scan at different scan resolution and bit depth, but >> the resulting scan is always bad. The higher the resolution is the >> thicker the green line is. > > I haven't looked at the transparency specific stuff for the 3490 yet. > As it doesn't work out of the box I'll need an USB trace from the > windows driver first. Do you think you can provide one? > I'm using the tpu on the 3490 with backend-11-10. It works ok though the scans seem quite dark compared to the original slide. However adjusting the gamma settings on the scanned file gives a nice 1024x768 display size. I'm very much a newbie at this so sorry I can't give more detailed info.
> You need to install an USB sniffer first. I prefer USBSnoop which is > available from http://benoit.papillault.free.fr/usbsnoop/ . The page > also gives basic instructions on how to use it. > > Once it works you should start logging and do a preview scan and a > scan of a very small area in low resolution, both times using the > transparency adapter. The log files tend to get quite large, but it > should shrink to a manageable size after zipping. Please send it to > me directly, not to the list. > > Regards, > > Oliver > Jim
