[scribus] How to assure pure black and not rich black.

John Culleton john at wexfordpress.com
Fri Jun 26 20:12:05 CEST 2009

On Friday 26 June 2009 01:51:06 pm Jeffrey Silverman wrote:
> <snip!>
> > Pure black, AFAICT, is defined by CMYK as 100% K, 0% C, M, and
> > Y. There can be a problem in Scribus trying to get pure black
> > as an end result, since and RGB with 0 for each value will
> > probably not result in pure black. We've had a number of
> > submissions to the list where it seems the sender gets obsessed
> > with getting pure black, and consequently gets upset at not
> > achieving it.
> >
> > In the end, I think it should come down to getting the visual
> > color of black you want with the printed product rather than
> > some absolute mathematically pure black.
> >
> > Greg
> <snip!>
> huh?
> It's not just academic. The difference in printing "pure black"
> vs "rich black" on a color laser is the difference in using all
> your color toner (expensive) or your black toner (also expensive,
> but less so). Same goes for screen printing, iirc.

When printing offset the registration of the four color cylinders 
can also be an issue. Small type in particular could be vignetted. 

John Culleton
Create Book Covers with Scribus/e-book $5.95

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