From: Katharine Thayer (kthayer@pacifier.com)
Date: 05/03/00-02:01:37 AM Z
Darryl Baird wrote:
>
>
> > How can the yellow ink be kept at a fixed level at larger values of
> > black ink?
>
> You're seeing the effect of pre-press technology know as either UCR
> (under color removal) or GCR (gray color removal) which indeed reduce
> the amounts of colors, other than black, when black is present.
> The printing press can produce a fine black with less additional colors,
> so it uses these schemes to effectively reduce the total amount of ink,
> to speed drying, and reduce waste. I believe you can either turn these
> off or at least modify them to respond in the way you desire..
It would be tempting to think this, if you just looked at the menus.
Under Color Settings<Separation Options you have the option, not of
turning them off but at least of switching from GCR (the default) to
UCR. This might appear on the face of it to solve your problem because
UCR substitutes black for colors only in neutral areas where there is
equal amounts of yellow cyan and magenta in your file. UNFORTUNATELY,
these separation options only work for PostScript printers; your inkjet
printer driver will ignore them. I don't know of any way to set CMYK
values that won't be overridden by your printer driver other than by
installing a RIP.
Katharine Thayer
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