Digital BW, The Print

Just to put some perspective on this:

D=1.57 means that 2.7% of the light striking the paper is reflected.
D=1.7 means that 2% is reflected.

This difference is probably at the edge of what can be measured accurately or detected visually (by my densitometer or eyes, anyway).

David

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "pdesmidt tds.net" <pdesmidt@...> wrote:
>
> I printed off another Ink Separation page in QTR's calibrate mode.  This
> time, I centered the image and used the "scale to fit" box.  This gave
> bigger squares to measure.  After hair drying for 5 minutes, the highest
> density square for the Arches read 1.70, quite a jump.
> 
> On Thu, Oct 4, 2012 at 2:11 PM, pdesmidt tds.net <pdesmidt@...> wrote:
> 
> > It took awhile, but I was finally able to get my 7600 working with my
> > Windows 7-64 computer.  I've only installed the Eboni cartridge, as I'm
> > waiting for some replacement cartridges. (The other spots have cleaning
> > fluid in them.)
> >
> > I printed out the QTR calibration page on Arches and HPR.  The prints
> > air-dried for an hour or so, and then I hit them with a hair dryer for
> > about 5 minutes.  I believe the dmax of the Arches should increase over
> > night.
> >
> > I used a Spyder Print spectro to measure densities, using a piece of
> > natural white mat board under the print.
> >
> > The Eboni + Arches yielded a max density of 1.57.
> > The Eboni + HPR yielded a max density of 1.62.
> >
> 
> 
> [Non-text portions of this message have been removed]
>