Digital BW, The Print

Hello Jeff,
The first set of values was obtained from creating an image with CMY
saturated color blocks, doing a Luminance extraction, and then
measuring their histogram grey levels...  C = 30 %  M = 59 % 
Y = 12 %

I just printed the 21-step grey scale by converting to RGB space and
then to the Epson 2000P. The grey range from 65% to 95% is quite
magenta biased and the 35% to 65% has the cyan cast. The Epson driver
thus seems to expect that the Magenta position will create a darker
BW shading.

I again measured the MIS FS inks and the differing results show the
variability in my eyeball comparisions ..
B 100%
C 30%
M 8%
Y 4.4%
PCe 10%
PMe 2.5%

I intend to install the inkset with the Cyan and PCyan swapped with the
Magenta and PMagenta. There is too much inconsistency between what I
measure and what the Epson Driver does vs the labels on the MIS FS
bottles to Not do so....

Comments ???

Regards,
Alex

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--- In DigitalBlackandWhiteThePrint@y..., "jrandall1149"
<jrandall@c...> wrote:
> 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
>