Digital BW, The Print

Jorge,

The UT inkset is not going to be discontinued.  If it is working for you,
there is no reason to switch to the UT-2 inkset.

There are others who are using it and writing curves for various barrier/RC
papers.  Dirk Hobman, for one, has written curves for the Epson Pro Glossy
paper.  I assume he'll be happy to share curves with others.  They may
already be posted in the Files section of this forum.  My assumption was
always that there would be a number of people using these inks and sharing
curves.  

The UT-2 inkset was made for several specific reasons, including the
following:  Sepia toner; easy grayscale workflow (for medium tones only) for
novices and non-Photoshop software; denser inks to avoid flooding papers;
and a stronger cold toner to deal with some very warm RC shadows.  

However, UT-2 is not the best option for everyone.  The UT inkset will
continue to be the inkset of choice for all the older printers and for those
who want to continue with what they are doing with it.  Its lighter inks
might even be a bit smoother in the 1280.  UT-2 is just another option, and
all of the inksets involve compromises.  Stick with what works best for you.

Paul
www.PaulRoark.com 
________________________________________


-----Original Message-----
From: islandbuck2 [mailto:islandbuck@...] 
Sent: Thursday, December 18, 2003 4:09 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: Re: [Digital BW] Lyson Print Guard

That's kind of a shame for me.  I have made a sizable investment in 
time and materials with the current UT work flow for the 1280.  I 
wish I could consume what I have and then make the switch at a more 
economically feasible time.  Hey, we all appreciate the time an 
effort you dedicate to this!  Thanks, Jorge

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
<paul.roark@v...> wrote:
> 
> >Paul, will you be making UT curves for the 1280 and some RC papers 
> >like Premium Semi-Gloss?
> 
> I'll be making UT-2 Semi-gloss curves.  (And/or maybe slider setting
> recommendations.) One of the changes was to give better barrier 
paper
> performance.
> 
> Paul
> www.PaulRoark.com 
> ________________________________
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
> <paul.roark@v...> wrote:
> > John,
> > 
> > >It looks like PremierArt Printshield is being proposed as a
> > >spray for papers like Epson Semi-Gloss to eliminate bronzing.
> > >Sounds good.  You get a glossy print with good dmax and no
> > >bronzing and a protective surface.
> > 
> > Yes, add to this a Wilhelm dark storage life of over 200 years, 
and 
> it makes
> > an interesting package.
> > 
> > >But with EEM and the like, the Mayer rod with polyurethane seems
> > >to give the same results.  And even though it's a little more
> > >involved than the spray can, EEM is WAY cheaper than glossy 
papers.
> > 
> > EEM is acidic, having a dark storage life of 110 years, according 
> to Wilhelm
> > -- and that is under ideal conditions.  When acidic materials 
have 
> been
> > encapsulated, they have in some tests deteriorated 10 times as 
> fast.  If the
> > acidic H+ ions are cannot escape, they will have nothing to do 
but 
> attack
> > the un-buffered EEM paper.  So, to get an equivalent life, you'd 
> have to go
> > with a buffered cotton paper.  The price comparison is then not 
as 
> good.
> > 
> > >So why use the RC paper with Printsheild approach?
> > 
> > There are a number of reasons.  
> > 
> > One is the existence of the Wilhelm tests of the PremierArt 
spray.  
> I don't
> > have one for the polyurethane coating I was doing.  
> > 
> > I was not able to scale up the Mayer rod.  Some claim to have been
> > successful with 16x20, but I never saw one.  I would have gone to 
a 
> thicker
> > glass and continued to try if I had not been intrigued by the 
> barrier
> > papers.  So, one reason is that I think I'll be able to scale 
this 
> process
> > up to any size.
> > 
> > I think the carbon pigment may be best protected if it is entirely
> > encapsulated.  In my high humidity fade tests, the polyurethane 
> coated test
> > strip did worse than one that was not coated.  I think the reason 
> is that
> > humidity was getting into the print from the back and then was 
not 
> dried out
> > the way the non-coated test strip was.
> > 
> > I am most impressed with the solvent based coatings in terms of 
> their
> > ability to surround the particles and protect them.  The solvent 
> based
> > materials are in liquid form when they hit the pigments.  The 
liquid
> > surrounds the particle and then hardens.  The water borne 
materials 
> just lay
> > on top.  It appears to be the difference between water-based 
paint 
> and
> > oil-based.  The later soak in and stick better.  The solvent 
based 
> sprays
> > are going to do a better job of encapsulating the pigment 
particles,
> > protecting them from the environment, and sticking them to the 
> paper.  A
> > tech person with one of the acrylic companies also said that the
> > solvent-based UV protective sprays are much more effective at UV 
> protection
> > than the water-borne materials.
> > 
> > With the 4000, we'll be able to go with either paper easily.  I'm 
> not
> > abandoning the matte papers, but it is time to optimize the B&W 
> systems for
> > both now.
> > 
> > The barrier (RC) papers may be the easiest, least capital-
intensive 
> way to
> > get very durable, high dynamic range display prints.  At least it 
> is worth
> > exploring.
> > 
> > Paul
> > www.PaulRoark.com
> 
> 
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Please follow these basic guidelines:
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Hostile, aggressive or argumentative users may be removed from the
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YAHOO! GROUP YOU EXPRESSLY UNDERSTAND AND AGREE THAT THE "OWNER" AND
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL OR EXEMPLARY
DAMAGES, INCLUDING BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFITS,
GOODWILL, USE, DATA OR OTHER INTANGIBLE LOSSES (EVEN IF THE  "OWNER" AND
"MODERATORS" OF DIGITAL BW, THE PRINT YAHOO GROUP HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES), RESULTING FROM: (i) THE USE OR THE INABILITY
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