Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!ames!dftsrv!drax!buck
From: buck@drax.gsfc.nasa.gov (Loren (Buck) Buchanan)
Newsgroups: comp.graphics
Subject: Re: conversion from RGB to CMYK
Message-ID: <909@dftsrv.gsfc.nasa.gov>
Date: 16 Feb 90 14:43:42 GMT
References: <50957@sgi.sgi.com>
Sender: news@dftsrv.gsfc.nasa.gov
Reply-To: buck@drax.gsfc.nasa.gov (Loren (Buck) Buchanan)
Organization: Computer Sciences Corporation @ NASA Goddard Space Flight Center
Lines: 18

In article <50957@sgi.sgi.com> paul@manray.sgi.com (Paul Haeberli) writes:
>#define ULTRAC		160
>#define ULTRAM		160
>#define ULTRAY		0
>#define ULTRAK		255
>#define BLACKLERP	4

How did you come up with this constants?  I assume that these are the
values you use for making separations for IRIS Universe (coated stock
and a fairly standard ink set).

B Cing U

Buck

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