Digital BW, The Print

Josh-

Yes. I had reversals in the 90-100% grays with HPR on the 2400 
through the ABW.  I did not try 1440.  I did try limiting the ink 
with the ABW driver (a feature on the 2400 driver, but not the 4800) 
and this did not solve the problem.  I do get a linear target from 
the 4800 on HPR with no adjustments.  The Crane Museo (original) also 
showed this problem on the 2400 and I have not tried it on the 4800 
because I don't want to use it for other reasons.

I would add, more or less in line with this discussion, that I have 
been using a lot of the Epson UltraSmooth on the 4800 and that it 
looks a lot better than it measures (measures 1.65 or so, but I'd 
say, compared visually to the VFA (measures 1.75-1.77), that it looks 
more like a 1.70-1.72).  So the measurement isn't everything--how the 
ink sits on the paper and the sheen of the ink have a lot to do with 
final results.  The buildup of ink on the HPR reduces the visual 
impression of dmax to me.

Walt



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "joshhackney" 
<joshhackney@g...> wrote:
>
> 
> Carl and Folks. 
> 
> I have done more testing.  About 1 week ago I printed out 3 more 
sets of QTR-51-random 
> targets with the following settings
> 
> 1.  2880, best
> 2.  1440, best
> 3.  2880, best, -25% ink limit
> 
> The 2880/best and 2880/best/-25% both resulted in the same 
reversals in the linearity.  
> The 1440 does not have any reversals, and the profile was created 
properly.  My theory 
> was that perhaps the inkloads were too high at 2880, and I was 
trying to prove it out.  I 
> think Walt ran into similar problems in the 100-90% patches when he 
was trying to profile 
> HPR using ABW.  Do you think it is possible that I would need more 
than a 25% ink limit?  I 
> guess I'll try to limit the ink load even more and see if that 
helps.  My concern is that these 
> are being printed with the QTR curves created by IJM for HPR.  Not 
sure why I would need 
> to limit the ink, since I assume their curve should have the ink 
limits built in.
> 
> Carl, since you have had some experience with K7 (though I know you 
are using a 
> modified inkset), do you have any thoughts on this issue?
> 
> Best.
> 
> Josh
> 
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Carl Schofield 
<scho@m...> 
> wrote:
> >
> > There is a density reversal from step 38 to 40 in the 51 step.
> > 
> > On Dec 1, 2005, at 8:49 AM, joshhackney wrote:
> >
>