Digital BW, The Print

Steve Kale wrote:
> Carl
> 
> Here is the unlinearised Nanochrome Black Only data.  I do not understand
> why there is such a shift in colour depending on density.  It makes it quite
> difficult to manage.

Is this a hybrid like the Generations Enhanced, a dye + 
pigment mix but with the latest dyes + pigments ?
The color shift a result of paper in the low range, 
transparency of the ink in the middle range and reflection of 
the pigment near Dmax ? A warm black pigment + a cool (blue) dye.

Speculation based on the early Dmax and no gain above, the 
long period of "drying" to Dmax and this color shift 
observation. Blue not just for making the black more 
neutral/cooler but also increasing Dmax (at least Paul and I 
thought that a blue transparent ink added could enhance the Dmax).

I also wonder how stable the measurements are. Dye print 
measurements fluctuate in time, up and down. Pigment prints 
suffer less of that problem. This has been often discussed on 
the Colorsync list in relation to proof printing.

Ernst
                    --
           Ernst Dinkla


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