Digital BW, The Print

David,

I agree with Steadman on this. Your choice of paper will have more 
impact on your Dmax that your choice of black inks. If differences 
exist between the pigment blacks I don't think they are significant.

Martin

--- In DigitalBlackandWhiteThePrint@y..., "Steadman Uhlich" 
<steadmanuhlich@k...> wrote:
> David, 
> First I would like to correct an impression you have that is, in my 
honest opinion, incorrect.  You say you are willing to dedicate your 
printer to BW printing. 
> 
> PiezoBW inks deliver very "black" blacks.  How black do you need?  
If you are considering devoting a $3,000+ printer to quad tone 
printing, I suggest you get sample prints and a black swatch from 
each ink seller or "manufacturer" and judge for yourself.  
> 
> My images usually involve significant black areas on the print 
(about 30% of total image).  Solid black.  I use the PiezoBW inkset 
and get blacks that look like the black of a well used fireplace 
chimney...carbon black.  Deep solid black. Blacker than night.  Black 
as soot...black as the ace of spades.   
> 
> So I believe if you are judging ink alone (and not 
paper/coating/ink combinations) you should not state that "Cones inks 
do not give a good rich black" when in fact they do. Of course you 
have to know how to use them, the right papers, and the right 
profiles.  That comes with time but is in fact also easy using the 
Conetech profiles supplied with the software.
> 
> Steadman
> 
> 
>   ----- Original Message ----- 
>   From: daviddstock@e... 
>   To: DigitalBlackandWhiteThePrint@y... 
>   Sent: Monday, September 10, 2001 12:52 PM
>   Subject: [Digital BW] metamerism confusion
> 
> 
>   I've been reviewing all the posts on the various Epson groups 
>   about metamerism, because I have to make a final decision 
>   about what inkset to use in my 7000 for printing a portfolio of 
>   black and white photographs. I have a pretty good sense of what 
>   the discussion has been, but still have a few questions.
> 
>   Like many people, I would absolutely love to be able to print 
>   black and white images using color inks. If this is impractical 
>   because of metamerism, I am willing to dedicate my 7000 to 
>   quadtones, at least for now.
> 
>   As I understand it, all the pigmented ink sets have some 
>   metamerism. Epson's pigs are the worst, Generations is pretty 
>   bad, and Cone's color piezos have little metamerism in most 
>   situations. However, Cone's inks do not give a good rich black.
> 
>   Questions:
> 
>   1. Is it feasible to use Generations black with Cone's color 
inkset 
>   to get better blacks? (I have seen reports of people mixing 
>   Generations black with MIS quad inks and Cone quad inks, 
>   which makes me optimistic. On the other hand, I have seen 
>   reports that adding any Generations black ink causes noticeable 
>   metamerism to appear.)
> 
>   2. Is there any other way to print grayscale images using 
>   long-lasting color inks without getting strong metamerism or 
>   weak blacks?
> 
>   3.  Why is metamerism not a problem with quadtone inksets that 
>   have pigments in them? (Especially when folks use Generations 
>   black in the mix...)
> 
>   Thanks in advance for any help.
> 
>   --David Stock
> 
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