Digital BW, The Print

Mike,

>... the VM/1160 combo is only using three main black/grey levels 

Yes.

>-- and it still gets the smoothest result. 

In high magnification scans the highlights are smoother than the others Roy
measured.  The 1280 with VM has the smoothest I've ever measured.  I don't
think most are going to see any differences.

The 1280/90 also has smoother shadow tones, at least on matte paper.  (My
tests usually show the 1280 smoother on glossy also, although there may be
some papers and situations where the 1290 is less than perfect there.)

Paul
www.PaulRoark.com 

For UT2 & UT7 information, curves, and settings see:
http://home1.gte.net/res09aij/


______________________________ 

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
<paul.roark@v...> wrote:
> Mike,
> 
> > ... in the light of what I've seen on Roy's "Dots, Dots" page. 
> >A few questions have cropped up ...
> 
> >First off, how does UT for 4-colour printers achieve variable 
toning ...
> 
> The Y position ink is a cool toner, just like the original MIS VM 
inkset.
> The gamut of the toner is slightly higher because the black and 
gray inks in
> the UT inkset are warmer (the same warmth that the VM inkset would 
be once
> the inkset warms up).
> 
> >Next up, regarding UT2 on the same page MIS state that you need to 
> >switch blacks to go between matte and RC papers, but Paul's site 
says 
> >that Eboni will do both with the 1280:
> 
> >http://home1.gte.net/res09aij/UT2-Readme.htm
> 
> Correct.  With the quads you'll need PK for glossy printing.  (Some 
have
> used a post-printing spray with Eboni just like we used to have to 
do with
> the old VM or Piezo systems.)  
> 
> With the UT2 and UT7 inksets the systems can print on glossy paper 
even with
> Eboni installed.  This is done by avoiding using the Eboni ink.  
The 2
> midtone grays are dark enough to achieve a dmax that is about 5% 
lower than
> if the PK were used.  On Ilford Galerie Smooth Pearl, the dmax with 
no PK
> used is over 2.3.
> 
> >... is it right that UT1 quad and hex also 
> >allow compatibility with all paper types provided Eboni is 
installed 
> >and the correct curve adjustments are made?
> 
> No.  The UT1 inkset requires PK to print well on glossy paper.  
Only UT2 and
> UT7 can print well on glossy with the Eboni installed.
> 
> >Thirdly, looking at the evolution from VM to UT, and considering 
> >Roy's comments about the lighter grey provided in the VMS set for 
the 
> >1160, is it true to say that the lightest UT grey is darker than 
the 
> >lightest VM grey in order to allow the "Easy B&W" functionality?
> 
> The lightest UT2 and UT7 grays are darker than the VM and UT1 
lightest gray.
> This is needed to get the sepia in there and to allow printing 
without the
> use of curves -- the "EZ" mode.
> 
> This is why the UT2 is for the 1280 only.  The 1280 is good enough 
that the
> light ink needed for the old quads (like the 3000) is not needed for
> visually smooth prints.  Of course, the 1160, with its rather modern
> variable-dot design, can achieve smoother highlights with the 
lighter gray
> ink.  However, there is a point where more smoothness just doesn't 
add any
> significant value, whereas the alternative uses of that ink 
position does.
> So, the UT2 design, for me and many others, is better compromise of 
features
> and makes prints that, overall, are better than the 1160.  I will 
probably
> throw my 1160 in the trash now instead of fixing it again.
> 
> >I'm mainly looking for smoothness ...
> 
> Get some samples from people.
> 
> Paul
> www.PaulRoark.com 
> 
> For UT2 & UT7 information, curves, and settings see:
> http://home1.gte.net/res09aij/




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