[Scribus] Colour separations and line screen

wayne iw
Thu Mar 2 20:54:23 CET 2006

On Monday 27 February 2006 10:32 pm, Steve Jacobs wrote:

> I use ghostscript for this a lot (whenever I need halftone dots other
> than the 5100's default), but haven't had yet needed to try cmyk
> separations. So what follows is not something I'm sure works, but
> rather what I'll try first when the need arises, which sooner or later
> it will.
> Ghostsrcipt (again, this is theory) generates proper cmyk screen angles
> and dots with the "-dCOLORSCREEN" argument. This would need to be
> accompanied with "-dDITHERPPI=150", because ghostscript will not
> calculate screen angles if the output is coarser than 150 lpi, and the
> 5100 (so far as I can tell with a linen tester) uses a built-in default
> of around 108 lpi.
> You may also want to experiment with different ghostscript devices.
> I've had good luck on the 5100 with lj5mono, specifying 1200 dpi
> resolution ("-r1200") in the command. Do "gs -h" to see what devices
> your ghostscript has to work with.
> In terms of workflow, tell Scribus to make separations, then print to
> file. Then use ghostscript to dump the resulting postscript to the
> 5100. The command will look something like:
> gs -dNOPAUSE -sDEVICE=lj5mono -r1200 -sPAPERSIZE=11x17 -dCOLORSCREEN
> -dDITHERPPI=150 -sOUTPUTFILE=\|lpr separation.ps -c quit

How does one denote landscape orientation in ghostscript? I need to  print 
in landscape orientation so I end up having to rotate the whole document.


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