[pdftex] Embedding and CMYK

[Hans Hagen]

At 06:30 AM 7/27/2002 +0200, h+i wrote:
>Hello Reinhard,
>
>I produced a sample page for myself  with all 3 entries (rgb, cmyk, gray)
>which produced exactly what I mailed. My program evidently - if in cmyk
>mode - produces black as a mixed color, but many other programs do too.
>
>
>What you mailed (0 0 0 1 setcmykcolor) is  clean black, as black is only
>derived from the k-part. This is equivalent to "0 setgray". I´m sorry that
>I did not make that clear.
>
>But  if you mix c +m+y (each with 100%) you get black too. This was the
>problem which started the question anyway: how to get away from mixed
>black.

actually, you don't get black with 1 1 1 0 but some kind of brown, which is 
why the black component is there, this is due to the fact that we're 
talking about mixing ink; also, many apps when producing cmyk assume some 
kind of paper being used and compensate for that (watch the default 
settings of such apps).

Hans
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