QTR-Quadtone RIP

perhaps others disagree or I'm missing something, but in my opinion the highest density measured is the dmax of that particular ink/paper/driver/printer combo, and as long as densities progressed up to that point so they can be linearized, it's also the maximum usable black. I don't see any point in choking back performance. Sometimes that means no limit at all.
Hope that makes sense.
Tyler

--- In QuadtoneRIP@yahoogroups.com, "Terry" <TerryGls@...> wrote:
>
> Does anyone have a comment on this observation I've had in working with QTR?
> Thanks.
> 
> --- In QuadtoneRIP@yahoogroups.com, "Terry" <TerryGls@> wrote:
> >
> > 
> > As I understand when printing out the Ink Separation Page in QTR, the Photo Black (PK) or Matte Black ink (MK) at 100% is the maximum black.  Yet visually, on most Luster/Pearl/Semi-glossy papers, the 55, 60, or 65% ink square is as black looking as the 100%.
> > 
> > For example, when I measure the 100% PK ink square on Harman Crystaljet Luster RC paper, printed with Epson inks on my R800 / R1800 with my densitometer I get 2.64.  The 60% black measures 2.13 yet visually looks as black as the 100%.  The 60% is typically chosen to create the QTR profile yet the maximum density achievable is never really used.  This general relationship is the same for all Luster/Pearl/Satin/Semi-gloss papers I've tested.
> > 
> > Yet for the inherent difference between Luster & Matte papers what is the "big deal" about high Dmax and can you really use the 100% in creating a profile?
> >
>