Digital BW, The Print

Hi Steve,

It sounds like we're all interested in some of the same things.

> I'm also eternally curious, so I'm interested, 
> but I'd like more info first. 

>...

> At least 50% of my printing is sepia, and I mean 
> deep sepia, not the carbon-ink warmtone...

I'm going to put LC, LM and Y, (along with K, LK and LLK) in a 220 at Golden
Trout workshop.  I think this arrangement allows the full range of what most
will want and be very flexible.  I think we'll end up generating a lot of
profiles that will be useable in a wide range of printers with these
standard inks.

How are you generating your deep sepia?

With the old sepia I mixed for the UT2/7 toners, it was 8% Y, 8% M, and the
remainder the UT-LC (light carbon, about 50% LK).


>F) You claim a fade resistance of ISO 105 - B02 standard of BWS 7.
>What does that mean in either Wilhelm or real-time years, 
>and where can I find more info on the standards?

It's hard to compare inks unless they are subject to a comparison test on
the same paper and in the same fader at the same time.  Wilhelm and RIT are
trusted third parties that can probably keep their variables under control,
but for most a comparison to a known sample like an Epson or MIS ink is what
I want to see.  The test conditions also, of course, need to be disclosed so
that we can evaluate the various factors that might influence the outcome.  

>D) Your DIPS continuous inking system ...

I suspect all of these CIS/CFS systems are subject to the same problems I've
experienced and measured in the large format printers.  Only regular users
should consider them with blended B&W inksets.  For high volume work they
do, however, make sense.  If Epson manages to cut off our carts, all of us
third party ink users may be using them.  That's really no problem,
particularly if we use a non-blended, standard ink approach.  

With respect to CFS/CIS designs, I do like the idea of the dampers being
between the tubes and the heads like in large format printers.  These
easy-to-change, cheap items have screens in them that can catch the clumps
before they get into the heads.

Paul
www.PaulRoark.com