Digital BW, The Print

Greg,

Thank you for doing this. I will not get a chance to look at the 
data any time soon. I am on a trip to the Rocky Mountains - really 
beautiful here. But I am an engineer, remember ;-) so it is all work 
right now - groan.

I printed the steps using QTR. Each color was printed at 25, 50, 75, 
and 100 percent ink limit. Easy to do with QTR. Yup, no LK for the 
Epson dye and NanoChrome because the R220 printer is a 6 color 
machine.

By the 18th day of the south window exposure, I was interested only 
in the K (I have my reasons). Hence I measured only the K values at 
25% ink limit. It was enough for my needs. Your tests may shed a 
light on these inks for a more general color use.

Shilesh

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Greg" 
<dfaprinting@...> wrote:
>
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Carl 
Schofield 
> <scho@> wrote:
> >
> > Not immediately obvious what you were doing.  So, these were 
printed  
> > QTR calibration charts at Limit=100.  The LK data appear to be  
> > missing from the HPRS Nanochrome density data file, based on 
your  
> > array description.  I didn't look at any of the other files yet.
> > 
> 
> 
> These were the test sheets that Shilesh printed and tested. I was 
just 
> the measurer. So no lk data for the Nanochromes since the r220 
only has 
> the 6 inks. And I'm pretty sure he said he used QTR to print 
these. If 
> not some kind of RIP was used to drive the individual colors, 
there is 
> definitely no mix of colors like you get trying to print yellow 
through 
> the RGB driver.
> 
> It's kind of too bad we don't have a profile target of the control 
and 
> fade, it would make a comparison graph. But it's unlikely that 
we'll 
> get a chance to do this after the more basic test that has been 
> performed. It looks like a really nice dye equivalent/replacement 
ink, 
> that if used on compatible papers might be really nice. For people 
> using gloss and semi gloss papers, these might be a really good 
> solution since you can get that type of swellable paper, or even 
the 
> Infu6 papers when they come out. But do note that the over inking 
of at 
> least the black ink, so you might still need a RIP to set limits, 
etc.
>