Digital BW, The Print

Thanks, Paul.  

I kind of thought it might work like that.  Here is some feedback on 
my first attempt.

I created a new 'neutral' profile for my 4000 using a previously 
created 2200 profile.  I used 2880 dpi, unidirectional printing, and 
the Ordered algorithm for both.  This particular profile uses MISPro 
inks (UC clones) PK, LK, LC and LM, so it may not be of interest to 
people who wish to avoid colored inks.  

I printed your new 21 step grayscale using ONLY the PK ink, and QTR 
Plot List coordinates of 0,0 and 100,100, which gives linear (not 
linearized) output.  Linearization data was removed from this test 
profile and ink limit was set to 100.  (I could also have used the 
Calibration target, which prints all 7 inks, but went this route 
instead since I only cared about the PK ink for setting Dmax).  The 
ramp showed a Dmax at 70%.

So, I plugged 70 into the default ink limit of my original 2200 
profile, saved it as a 4000 profile in my 4000 folder, and printed 
the same grayscale with it.  The profile looked great and was pretty 
neutral, but I had set the ink limit a bit too high (as I often do 
trying to get the absolute best Dmax) and the last two patches read 
almost exactly the same.  Too much ink.  So, I lowered the ink limit 
to 60% and set the black boost to 70% for a little kick at the dark 
end and got a really good test print, which I then read and 
linearized.  

I made a print with it and it looks great.  

So, this procedure worked fine for repurposing a 2200 profile to my 
4000 using the same inkset.  This will save a LOT of time since I 
already have good profiles for my 2200 on a number of papers.  

Thanks for the help, as always.

Lou

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
<paul.roark@...> wrote:
>
> Hi Lou,
> 
> >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,
> 
> Go into the files and change or remove the printer name inside the 
file.  I
> use Notepad to open the files.
> 
> > and simply reset the total ink limit and relinearize for the 
4000. 
> >I am assuming that the relationships between the inks would be the 
> >same percentage wise from the 2200 to the 4000. 
> 
> Yes, my experience is that profiles are much more portable with QTR 
than
> with the Epson driver.
> 
> > 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. 
> 
> That sounds like an efficient way to do it.  Let us know how it 
works.
> 
> Paul
> www.PaulRoark.com
>