Digital BW, The Print

Oops, I should have said "shed more LUX"

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Shilesh Jani" 
<shileshjani@...> wrote:
>
> 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.
> >
>