Digital BW, The Print

Hi Paul,

Thanks for your reply

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "pr_roark" <pr_roark@...> wrote:
> Lab L    A       B
> 96.76	1.61	-0.12

That's a bit odd... my eye-one gives (consistently) Lab a and Lab b values for HPR paper white around Lab A=0.6-0.7 and Lab B=0.1-0.3. The deviation seems larger than the system noise...


> 92.58	1.75	0.04
> 88.4	1.89	0.2
> 84.48	2.08	0.35
> 80.49	2.16	0.42
> 76.11	2.21	0.54
> 71.53	2.23	0.5
> 67.65	2.17	0.43
> 64.4	2.14	0.3
> 60.16	2.04	0.14
> 55.97	1.9	-0.09
> 51.58	1.75	-0.36
> 47.64	1.56	-0.64
> 43.54	1.35	-0.96
> 39.56	1.19	-1.24
> 35.2	0.98	-1.25
> 31.16	0.95	-1.18
> 26.78	1	-0.86
> 22.8	1.19	0.45
> 19.01	1.07	0.69
> 14.99	0.64	-0.02
> 
> This is the HPR "cool" curve with NC2 (http://www.paulroark.com/BW-Info/1400-NC2.pdf) which is basically HP-PK, 30% HP-PK, and Eboni.

But apart from that especially the lab B values are close enough to neutral... 


> > So I am considering a stripped down version of HP-C6: 
> > MK - Eboni
> > PK - HP
> > LK carbon (as warm toner)
> > LK cool (diluted HP-PK)
> > LLK cool (dilted HP-PK)
> > GLOP
> > 
> 
> Yep, that's what I was thinking of.
> 
> Let us know how it works.

I will but it will take some time as the family summer holiday will force a shift of priorities ;-) 

As this is the most cumbersome part to experiment with: what would you choose as dilutions for LK cool and LLK cool? I was thinking of 33% (3:1) and 17% (6:1) but could easily do something different.

Joost