[scribus] CMYK

[john Culleton]

On Mon, 10 Oct 2011 21:03:54 -0400
Louis Desjardins <louis.desjardins at gmail.com> wrote:

> 2011/10/7 Stefan <stmstmstmster at googlemail.com>
> 
> > Some notes.
> >
> > You can create greys in two ways:
> >
> > 1.)  50 % K gives a cold looking grey (only black ink)
> >
> > 2.)  50 % CMY gives you a somehow warmer looking grey, it is mixed
> > from three inks.
> >
> >
> > A rich black (deep black) is created with 100 % K and 50% up to
> > 100% C,
> >
> > 100 % K only is often not black enough, if you have a large black
> > box on a page oder a big headline.
> >
> 
> There is an article on rich black in Wikipedia that gives a bit more
> details. I don’t think this article is complete but it's a start.
> 
> http://en.wikipedia.org/wiki/Rich_black
> 
> It’s worth to dig to get a good knowledge of what rich black is about.
> Depending on the printing device and on what is actually printed,
> values may (will) vary and this can (or will) have an effect on the
> final printed result. There are simply no short answers about rich
> black.
> 
> Louis
> 
> >
> >
> > 2011/10/6 Daniel-S-P <d-s-p at d-s-p.de>:
> > > Key
> > >
> > > Am Donnerstag, den 06.10.2011, 15:46 -0500 schrieb Dale Erwin:
> > >> So CMY must be Cyan Magenta Yellow, but what is K?
> > >>
> > >
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> >
> > --
> > Gruß, Stefan
> >
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A good guide to Rich Black options (and many other things) is the
Galaxy Gauge Color Map Pro 8-in-1 Design Tool.  It is not that
expensive and I find it a superior aid to publishing. The Color Map
Pro shows 36 different swatches of Rich Black. To my eye the blackest
swatch is c60% m40% y40% k100%. This meets the LSI limit of no more
than 240% ink coverage.  

I use the Scribus Open Office palette. I add the above combination to
the palette and label it it Rich Black. 

-- 
John Culleton
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