There are two types of EPSON scanners: The ones that use the ESC-I=20 command language, which are supported by the EPSON backend, and the ones that use other command=20 sets (e.g. Perfection 660, 1250 and 1260). The ESC-I scanners are doing the calibration step=20 automatically when they are powered on, so it's not necessary to do anything special in the backend=20=
to get correct colors and uniform colors. I don't know how this is done with the Perfection 1260=20= that is discussed in this thread. Karl Heinz On Tuesday, August 5, 2003, at 02:56 PM, Henning Meier-Geinitz wrote: > Hi, > > On Tue, Aug 05, 2003 at 09:13:44PM +0300, Timo Pylv=E4n=E4inen wrote: >> I'm pretty sure the problem is in iscan or the epkowa backend.=20 >> Anyhow, the >> TPU works with xsane+plustek, albeit produces crappy scans. This is=20= >> pretty >> much what I can get from negatives: >> http://www.cs.tut.fi/~pylvanat/helvetin16.jpg > > That's a comment for the backend authors: > > That image looks like there is no fine (per CCD pixel) calibration > done, or the calibration isn't done correctly. I don't know how it > works with the Epson scanners, but with the scanners I know there is a > special calibration area for the transparency unit. So maybe the > calibration uses the normal calibration strip in transparency mode, > too? Or the backend doesn't know the correct position of the > calibration area? > > Bye, > Henning > _______________________________________________ > Sane-devel mailing list > sane-de...@www.mostang.com > http://www.mostang.com/mailman/listinfo/sane-devel
