Digital BW, The Print

Tom & Roger,

You're probably correct that the "mordant" approach might work on matte &
cotton papers.  

I'm not sure how much it would add there.  With matte paper and pigs there
are no reflective artifacts to deal with, and the glossy v. matte dmax
difference is mostly a question of how the light is reflected.  

I think the big market is glossy color.   

Kodak also noted the "refrigerator door" use of photos.  That's one of the
places I test also.  My interest in the sprayed RC papers was for a display
that didn't need glass.  

I suspect the fine art bunch will not be interested in this approach,
however.  Matte under glass may still be the ticket there.

All very interesting.  Technology marches on.

Paul 
www.PaulRoark.com 
_________________


-----Original Message-----
From: Roger L Sopher [mailto:rlsopher@...] 
Sent: Friday, January 30, 2004 12:48 PM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: RE: [Digital BW] Kodak's latest ink jet paper

Paul,

Why couldn't the mordant chemistry be incorporated in the receptor layers
(coating) on matte papers? Mordents are the "glue" that binds the dye to a
more or less specific target molecule and if  gelatin (for example) was used
in the coating it could provide a site for dye binding I would think.  Maybe
a type N surface might be possible and we could have something more akin to
darkroom prints. It would be nice to have a dye based system without the
clog problems that would open up other printer systems to the fine art
market.

To partially answer my own question, $$$ since the demand for such a system
would be limited but maybe Kodak's present financial problems might make
them open to licensing their patents.

Tissue slides still have a significant fading problem with time, usually
some years even with dark storage. It is a particular problem when slides
are exposed to strong light, but then the chemistry is not designed to be
"archival" and the tissue can usually be restained.

Roger
  -----Original Message-----
  From: Paul Roark [mailto:paul.roark@...]
  Sent: Friday, January 30, 2004 1:18 PM
  To: DigitalBlackandWhiteThePrint@yahoogroups.com
  Subject: RE: [Digital BW] Kokak's latest ink jet paper


  Tom,

  >Can all of this happen with dye and still preserve the color advantage
dye
  >has over pigs in terms of vibrancy, saturation, etc.?

  I don't know, but it suspect it can.  All the surface artifacts of the
  pigments are avoided also.  Look at the pains Epson is going to in the
R800
  order to hide the differential gloss.  By their nature, the pigs are going
  to sit on top of the paper.  Dyes can go into the emulsion while they are
  still liquid.

  Of course, what the Kodak advance can't do is give us a dye that can last
on
  cotton paper.  Perhaps this will help the "fine art" and "color glossy
  photos" markets diverge.  This could be good.

  Paul
  www.PaulRoark.com

  ____________________________________




[Non-text portions of this message have been removed]


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