Digital BW, The Print

Alex:  

For both the hex-FS and hex-FS-E inksets the Cyan position ink is 
dark gray, the Magenta position ink is middle gray and the Yellow 
position ink is light gray. This is not consistant with your first 
test. 

In the hex-FS, the PM position ink is the same as the M position ink 
and the PC position ink is the same as the C position ink.

In the hex-FS-E, the PM position ink is a dilution of the M position 
ink and is therefore lighter and the PC position ink is a dilution of 
the C position ink and is therefore lighter.  Your second test of the 
hex-FS-E inks are consistant with this.

Try a swab test using a q-tip and visually compare.

Jeff Randall

--- In DigitalBlackandWhiteThePrint@y..., "a_pettit_jr" 
<a_pettit_jr@y...> wrote:
> The story continues ... I orginally purchased the non E version of
> the MIS FS Hex inks and this started me on a project to measure the
> relative ink densities ( while waiting for the E versions to 
arrive )
> 
> If I create a CMY color pattern and extract the Luminance, I obtain
> C = 30 %
> M = 59 %
> Y = 12 %
> 
> Even if there is a non linear relationship between the ink 
densities 
> and printed color, this inkset seems 'strange'
> 
> The relative grey densities commpared to the Black are :
> 
> B = 100 %
> C = 26 %
> M = 7.2 %
> Y = 3.2 %
> PCe = 9.6 %
> PMe = 1.6 %
> 
> I am sure there is some factor that I am missing, And that may be 
the
> EpsonDriver in the way it is attempting to create grey shades from
> its presumed hex color set, but I would have thought that M should
> have been the darkest ink and that the C and M photo inks perhaps
> 2/3rds or half the density of their full depth ink. The PMe is much
> lighter than Yellow....
> 
> I just don't wish to fill the carts and then have another problem
> with posterized prints as I did the last time with VM on my 2000P.
> 
> Thanks,
> Alex
> 
> This is getting challenging ...