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Someone else on this list proved that everything that's sent to the Epson printer driver is first converted to 720ppi, and then that is given to the dithering algorithm which generates dots at whatever final resolution you've selected. If you try to send it data at 1440 or 2880ppi, the detail will be resampled at 720ppi, and will cause aliasing. Because of this, the PostScript should be rendered at 720dpi for best results. -- Ciao, Paul D. DeRocco Paul mailto:email@example.com > From: Robert L Krawitz > > It might work that way. Just make *absolutely* certain that you > render it at the printer resolution you've chosen. The normal rule of > thumb here to scale to 360 DPI or so is not correct here -- if you set > the printer resolution to 2880x720 or 1440x720, that's the resolution > you have to actually render it at. The lines should be very fine > indeed and the almost horizontal lines should show stairstepping, at > least under a loupe. - Turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for list instructions.