[OS X TeX] White vs. Transparent?
will.adams at frycomm.com
Wed Mar 29 08:40:03 EST 2006
On Mar 28, 2006, at 10:45 PM, V. Yu. Shavrukov wrote:
> On Mar 28, 2006, at 14:14, William Adams wrote:
>>> I meant sRGB vs AdobeRGB vs ProPhotoRGB etc. rather than cmyk vs
>>> rgb vs hsv...
>> Oh. Well presumably you'll only be needing one such tag for the
>> vector and text elements which TeX will create --- just post-process
>> the file to assign such a colourspace tag --- this could be set up
>> using OS X's pdf Services.
> Thanks. Are you saying one can assign a profile to the whole pdf
> that will apply to all elements that don't already have a profile
> (spot colour tag etc.) of their own?
>>> I'd be curious to learn of a situtation
>>> where you needed more than one and this wouldn't be an option
> Using something like pgf one can continuously vary the colour of an
> element (which could be a glyph, a paragraph etc.). This would
> require more than one spot colour but as far as I can see a single
> profile would be sufficient.
You don't need more than one spot colour to do this, if the colour
change is a tint.
If you do need multiple spot colours you need to consult with your
printer over this and screen angles &c.
Even so, you're not likely to have more than 2 or 3 spot colours in a
given job, so it should be manageable (the largest number of spot
colours in a job I'm aware of is Edward Tufte's _The Visual Display
of Quantitative Information_ which has 23 (over the entire book --- I
think there're fewer than 4 spot colours per signature).
Or do you mean something other than a specific printer ink colour
when you say spot colour?
>>> William Adams:
>>>> Or one can adapt my technique from TUG2003 to access spot
>>>> colour .eps
>>>> files in a virtual font.
> Do I look for that technique in TUGBoat 2003?
Yes, it's in the issue after the Proceedings issue.
senior graphic designer
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