Digital BW, The Print

Roger,

I have used a couple of Krylon sprays, and, frankly, I can't tell much
difference in any of the sprays.  The problem I have with the Krylon is that
the company will not release any information about them.  What is on the can
is about all that is going to be made public.  So, I think Kamar says it is
archival, the others may not.  That could be as far as Krylon will go.

The matte spray may be very interesting on an RC to cut the "sheen."  I have
not tried that one yet.

Obviously, Krylon has advantages -- availability and price.  So, I use it.
But if I'm going to be selling something, I'd like to be able to say a
little more about the spray that is used.  Here is where the B72 mix may be
important.  For my own uses, I assume Kamar is the same stuff.  In short, I
think its just a marketing issue.

Paul
http://www.PaulRoark.com
______________________________________
  -----Original Message-----
  From: Roger L Sopher [mailto:rlsopher@...]
  Sent: Sunday, January 26, 2003 7:54 AM
  To: DigitalBlackandWhiteThePrint@yahoogroups.com
  Subject: RE: [Digital BW] Re: Printing High-load black pigments


  Hi Paul,

  In looking through a Jerry's catalog I found a pot full of Krylon
products. They have Kamar but they also had a couple of others that looked
interesting and I wonder if you have any information about their use in
digital printing:

      Krylon low odor clear coatings matte spray 7120
     Krylon workable fixatif spray 1306

  Thanks,

  Roger
    -----Original Message-----
    From: Paul Roark [mailto:paul.roark@...]
    Sent: Saturday, January 25, 2003 8:21 PM
    To: DigitalB&WPrint
    Subject: [Digital BW] Re: Printing High-load black pigments


    <paul.roark@v...> wrote:

    >A light fixative (three very light coats) is not a big deal to me.
    It has no effect on the image, but the pigs don't rub off easily.  I
    can easily do this in my garage with no breathing or equipment.
    There are aerosols that are very archival and work fine.<

    bjpm77 <fnbjm1@...> wrote:

    >What fixatives are you using? I'd like to give an archival aerosol a
    >try. As you point out, the surface of matte paper is touchy. If you
    >make images with dark grounds, as I often do, scuffing is especially
    >apparent.

    Ross Merrill, Chief of Conservation at the National Gallery of Art,
    Washington D.C. (USA), in a 1997 speech regarding pastel conservation
said
    as follows regarding fixatives:

    "Today there are a number of alternatives. Krylon Acrylic Varnish B72 is
    used by conservators. This product will remain unchanged for 400 years,
but
    does have a tendency to saturate the surface. Grumbacher B77 varnish or
    "tough film" is the same as B72, but will not saturate. Krylon workable
    fixative and Sennelier fixative are both good products. One should stay
away
    from Grumbacher's "blue label" fixative." See
    <http://www.bmi.net/knapp/iapsmerrill.html>

    I think the most well know and acknowledged "archival" fixative is Rohm
&
    Haas's Paraloid B72.  This patented formula is now available as the
Lascaux
    (a Swiss company) "Fixativ."  Outlets that supply the preservation and
    conservation types will have it.

    I cannot find the Krylon equivalents that Merrill referred to.  My
    assumption is that when Krylon was acquired by a larger company that
company
    decided to no longer pay Rohm & Haas royalties for the patented formula.
    I'd guess that Krylon Kamar is so close as to be a complete substitute.
    However, since that company will not disclose any proprietary
information or
    tests, there is some uncertainty.

    I have not tried the Grumbacher B77, but that is certainly one on my
list.

    Frankly, I suspect even Lyson Print Guard and lots of others are
essentially
    the same product.

    Paul
    http://www.PaulRoark.com



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