Digital BW, The Print

BINGO!  And for quad-ink systems, only 2 shades will be printed -- 
black and gray (a constant mix of the 3 gray inks) unless an RGB 
partitioned curve set is applied to a 24-bit grayscale image (ie., 
pseudo colorized).  

Jeff Randall

--- In DigitalBlackandWhiteThePrint@y..., "a_pettit_jr" 
<a_pettit_jr@y...> wrote:
> I believe I have just come to the realization that unless  Color 
Correction Partitioned Curves are applied, a six color printer is 
going to print a grey scale ( in RGB space ) with only 3 
fixed 'shades' of ink with the stock Epson Driver : 
> 
> 1) Black ( from ~ 80% grey up)
> 2) C M Y ( ~ 50% grey up )
> 3) PC,PM,Y ( 0% to 50% grey)
> 
> The Epson driver is going to blend the appropriate Cs and Ms and Y 
to create a balanced Grey tone. The droplet size will vary, the 
ratios remain fixed.
> In order to optimize the inks, a pseudo color image must be created 
to force the darker shades to be used at the deeper color end of the 
overall scale or perhaps more importantly that the lighter shades be 
used for the whiter tones to reduce the appearance of droplet 
visibility ...
> 
> C o m m e n t s  ???
> 
> Alex