Re: CMM "interfering" with PS color picker?
Re: CMM "interfering" with PS color picker?
- Subject: Re: CMM "interfering" with PS color picker?
- From: Chris Murphy <email@hidden>
- Date: Fri, 2 Feb 2001 11:33:54 -0700
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Uhm, what about printing on yellow paper, for example? I'd certainly
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hope such a profile would produce something more like CMYK x, x, 0,
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0, where x > 0.
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I created a profile for Domtar Sandpiper, a popular 100%
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post-consumer-waste recycled paper. It has a very strong yellow cast.
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Obviously, you can't print white on it, but I'd expect to be able to
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print near-white within the realm of possibility, which seems to
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dictate a non-zero white point.
This is not supported in the ICC spec for output profiles. 255,255,255
RGB should always render 0,0,0,0CMYK when using perceptual, relative
colorimetric and saturation. In output profiles the exception is absolute
colorimetric
To do what you want, the spec would indicate an abstract profile should
be used to combat that color cast in paper white (where you want gray
instead). The support for abstract profiles is almost nill. You could get
away with using a device link profile to do this. (Render with the output
profile to CMYK; and then use a device link profile that adjusts
0,0,0,0CMYK to combat the color cast of the paper.)
Chris Murphy