Re: Default ICC profiles
Re: Default ICC profiles
- Subject: Re: Default ICC profiles
- From: Henrik Holmegaard <email@hidden>
- Date: Tue, 30 Jan 2001 00:54:47 +0100
Chris Murphy <email@hidden> wrote:
Service bureaus tell me that embedded ICC
profiles in PDF files are causing them LOTS of problems. In some cases
these grayscale images are converted to 4/c unless the embedded profile
is removed.
When I save a grayscale image as PDF and embed a 20% dot gain profile,
then open the file in Acrobat 4.05, parts of it are PINK and will print
PINK. I haven't tried making separations yet.
Anyway, as far as I can tell this is certainly a bug in various prepress
and RIP systems that's causing this. But it is happening and I'm not
clear on exactly why. So at this point I'm not embedding ICC profiles in
PDF's.
ProfileMaker has a kTRC function we've spoken of on and off.
Printopen 4 also supports it. Your production-level ICC color server
should support this technology.
And you should of course tag grayscale objects just as much as RGB or
CMYK objects. Not tagging device dependent objects in this day and
age is a bad idea.
--
Henrik Holmegaard
TechWrite, Denmark