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Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

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Re: [Digital BW] QTR-ICC BPC & Pure Black

2006-02-19 by Steve Kale

The curve embedded in a QTR-ICC profile runs from pure black to pure white.
You can see this by looking at one of the profiles.  Therefore pure black is
still mapped to pure black.  The end points should not move.


> From: Olivier <odesmais@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Sun, 19 Feb 2006 15:25:50 -0000
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: [Digital BW] QTR-ICC BPC & Pure Black
> 
> I remember I read about it but can not find the thread any longer.
> 
> Here is the issue : when I get a file with pure 100% K and then convert
> with QTR-ICC (VFA, HRP...) and then look at the tone scale in the PS
> Level command (Alt-click on XP), the scale is no longer from 100%K to
> white but some kind of dark grey to white.
> 
> My interpretation would be that no K will be layed down when printing.
> 
> I know BPC is embedded in the ICC (which reflects by a non pure K but a
> dark grey) but again if no 100% value in the converted file, then no
> pure K is to be sprayed on the paper (?).
> 
> Please help or let me have the threat ref please.
> 
> Olivier
>

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