Thanks for the testing. I believe it is hardware feature, because under Windows it is behaves exactly the same - lower the resolution more color noise added to the borders of b/w lines. Easy to reproduce is just to do preview in color mode some thin b/w lineart.
ABC. On Sat, Mar 28, 2009 at 11:16:42PM +0100, Thomas Stolwijk wrote: > I've successfully used my multifunction Samsung SCX4725-FN with the xerox_mfp > backend. > > On lower resolutions (75-200 dpi) the colors seem to be off (e.g. b/w drawing > shows colored lines instead of black lines) > 300 and 600 dpi are fine. > > Both flatbed and automatic document feeder work fine. > > I'll continue to look into the color issue at lower resolutions. Any ideas on > where to get started ? > > Output from sane-find-scanner: > > found USB scanner (vendor=0x04e8 [Samsung], product=0x341f [SCX-4725 Series]) > at libusb:001:003 > > > > > Regards, > Thomas
