I've noticed this problem lately - maybe it was always there and I just didn't think about it. I've noticed that diagonal lines on my plots are stair-stepped or jaggie (aliased). I'm printing to an Epson 1280 and now an Epson 7600, from LD3, using the sytem driver for each Epson. Even using the highest printing resolutions (2880) and paper settings, lines are still stair-stepped. Is this true of any inkjet printer (as opposed to pen plotters where a diagonal line is a true straight line created by the physical pen), or is this a printing language issue - as in postscript / HPGL-2 / Epson ESC...? Any help?