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Digital BW, The Print

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Re: Question about Paul Roark adjustment layer for color inks

2008-03-31 by pr_roark

The color profile I use with the 260 is simply a curves set that 
makes a grayscale 21-step test file print as a relatively neutral 
print with a ramp that about matches the Gray Gamma ramp. It was just 
manually made with the usual iterations and a ColorVision PFP 
spectro.  It works well in the neutral range, which of course is how 
it was made.  It is less accurate with very saturated colors.

In actual practice, I use it for my color snapshots.  I find that 
different shots need the layer at different opacities.   It works 
well enough that I have not bothered to do any more serious profiling 
or switch to another approach.  I do not represent it as professional 
quality profiling -- I'm not making "giclees" with it for the 
painters in the gallery.

Paul
www.PaulRoark.com 


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Roger" 
<rsmith02@...> wrote:
>
> I have struggled to get a R220 to work as well with MISPRO color 
inks 
> as it has with MIS UTR2 inks.
> 
> Profiles from inkjetart.com, Cathy's profiles and PrintFixPro have 
> all come out with some serious problems as the ICC profiling 
process 
> doesn't seem adequate to correct huge the color shifts when using 
> these pigment inks with a driver that expects very different dye-
> based inks.
> 
> I was intrigued by this method of using adjustment layers instead 
of 
> ICCs and was wondering if Paul or anybody could offer advice for 
how 
> to derive my own curves for use with the R220.
> http://www.paulroark.com/BW-Info/R260-Color.pdf
> 
> I have a PrintFixPro unit.
> 
> I also bought an R1800 hoping that would solve my color issues but 
> the model I got seems to spray ink internally, so I have to have it 
> replaced. In the meantime, back to the R220.
> 
> Best,
> Roger
>

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