Digital BW, The Print

Paul,
On my 7600 on EEM using eboni in the LK slot, my readings with an eye-one are all 
1.63-1.66. That's with about .04 to .05  on the paper (not sure if you are subtracting that 
off). Using the boost yielded slightly higher values, but I had problems with linearization of 
95% up. On HPR the numbers are 1.73 - 1.74.

These are using 1440, which uses the (3) variable drop sizes. You can configure QTR to 
use only 2 or even 1 drop size. Perhaps the 7500 wins on larger dot sizes? Although one 
would expect the larger dots to be used at the high end. However, I am not sure how the 
ink  lmits/dot sizes interact. Perhaps with a 55-60% ink limit the largest dots are not being 
used. Maybe Roy knows.

Costa


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" <paul.roark@v...> 
wrote:
> 
> Ernst,
> 
> > What is the Dmax you get with both drivers ?
> 
> 
> On EEM with Eboni installed the dmax with the Epson driver is usually about
> 1.60 - 1.61.  IJC produced the same initially with one of their pre-made
> curves.  QTR hit 1.62.  The Epson driver set to Premium Glossy paper (PK
> chip on Eboni cart) with 2880 and High Speed UN-checked hit 1.63.  With IJC
> and some dark cool ink added to the Eboni I've seen 1.66 in some tests, but
> I have not been able to replicate that in a curves set yet.  On the 7500
> with this batch of paper 1.67 is typical (and a whole lot easier to achieve
> -- I'm seriously thinking of dumping the 7600).  (These are all initial
> readings that typically will increase by 0.01 overnight.)
>