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Digital BW, The Print

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Re: Repurposing QTR Profiles

2007-11-06 by Roy Harrington

Hi Lou,

Moving profiles from the 2200 to 4000 with the same UC inks should be
very doable.   As you say just copy the files over from the 2200 folder to
the 4000 folder.   The main difference will be the ink limits.  If your profiles
are for 2880dpi then they just use single smallest dropsize.  2200 is spec'd
at 4pl and the 4000 at 3.5pl -- then figure 4/3.5 = 1.143 so just multiply all
the ink limits by 1.143 and you ought to be very close.  You may want minor
tweaks.  Then re-linearize and I bet you'll be quite satisfied.

Roy

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Louis Dina" <lou@...> 
wrote:
>
> I'm sure people have tried this, perhaps succesfully and I thought I'd 
> ask before I spend a lot of time on it.  No sense reinventing the wheel.
> 
> I have some great QTR profiles for my 2200 using UC color inks.  I want 
> to build the same sets of profiles for my 4000 using the same inks, but 
> of course, the 4000 has different ink limits.  The profiles on both 
> printers will be based on the same printing parameters (2880 dpi, 
> unidirectional, ordered).  I was wondering if I can simply open the 
> 2200 profile, rename it for my 4000, and simply reset the total ink 
> limit and relinearize for the 4000.  I am assuning that the 
> relationships between the inks would be the same percentage wise from 
> the 2200 to the 4000.  Will this method generate good profiles, or is 
> it necessary to start from scratch to get excellent profiles?  
> 
> If such a method does work, how do people do it?  I was thinking of 
> determining the Black ink limit conventionally, plugging the new limit 
> into the repurposed profile, removing the linearization information, 
> and reprinting a target for final linearization.  
> 
> Thoughts, cautions, results?
> 
> Thanks, as always.  
> 
> Lou Dina
>

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