Hi, I've added a while back some code to the pixma backend to deal with CCD color planes shifts, and it currently works fine with MP970.
For MP800, 810, it was based on some info I've got on bug reports (for instance bug #310463), but this code has not yet been tuned, especially the amount of shifting to apply. This should not be a big deal to fix now. Could you first confirm that you get the same result with ADF and with glass scans ? Then, you could do some tries by changing the amount of shifting applied by the backend: In backend directory of the latest CVS version, in file pixma_mp150.c Could you change line 980 from: mp->lines_shift = s->param->ydpi / 100; to mp->lines_shift = s->param->ydpi / 50; Recompile, and see how the amount of lines shifting changed ? Nicolas Le jeudi 28 ao?t 2008 ? 17:41 -0700, tux99 a ?crit : > > > Jean-Nicolas Gautier wrote: > > > > Hello, > > I bought a pixma MP810 one year ago. It works but I have the problem > > with color alignment : yellow, magenta and cyan layers are shifted. > > > > I have the exact same problem also with a Canon Pixma MP810. > I'm using Mandriva 2008.1 but I have installed the latest CVS > sane backend (sane-scm-2008-08-28). > # scanimage -V > scanimage (sane-backends) 1.1.0-cvs; backend version 1.1.0 > > I'm available for testing any bugfixes or for any further details, too. > > Arne > -- > View this message in context: > http://www.nabble.com/pixma-MP810-working-with-sane-tp19031727p19211863.html > Sent from the SANE - Dev mailing list archive at Nabble.com. > >
