Digital BW, The Print

Jim,

>What do you think of Lumijet Image Shield?

I don't know what it is.  It could be the exact same product.  I notice that
Marshall's has a similar product in a can that is exactly like the
PremierArt and Lyson sprays.  Many of these are probably coming out of the
same large chemical company factory.

Paul
www.PaulRoark.com 

_________________________


  -----Original Message-----
  From: Paul Roark [mailto:paul.roark@...]
  Sent: Monday, March 22, 2004 8:21 PM
  To: DigitalBlackandWhiteThePrint@yahoogroups.com
  Subject: RE: [Digital BW] effect of Print Guard on watercolor papers


  >...should I use Lyson Print Guard on papers like hahnemuhle William
  >Turner or Luminos Museum Parchment or Legion Somerset
  >enhanced?

  Print Guard appears to be the same as PremierArt Print Shield, which has
  been tested by Wilhelm.  See
  http://www.wilhelm-research.com/pdf/WIR_Ep9600_2003_11_01.pdf
  Some of the papers were sprayed with PremeirArt, and it appeared to help
the
  lightfastness and not affect the paper life estimate to the extent of the
  testing (to >200 years).

  >What is the long term effect of Print guard. Does it eventually
  >crack or discolor.

  These companies are not disclosing what the products are.  Solvent based
  acrylics have the best reputations for not yellowing, and I assume that is
  what these are.  My past research led me to Rohm & Haas's B72 formula as
the
  most trusted by conservators.  Grumbacher Tuffilm is apparently the same
  thing and readily available at art stores.

  See the statements of Ross Merrill, Chief of Conservation at the National
  Gallery of Art, Washington D.C. (USA), below.  In a 1997 speech regarding
  pastel conservation he said as follows regarding fixatives (which these
  are):

  "Today there are a number of alternatives. Krylon Acrylic Varnish B72 is
  used by conservators.  [Krylon no longer makes this, Lascaux Fixativ is
the
  only true Rohm & Haas B72 that I know of.] 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..." See <http://www.bmi.net/knapp/iapsmerrill.html>

  I prefer the Lyson or PremierArt for glossy prints because it is easier to
  get an even spray.  For matte prints the Grumbacher or Lascaux has worked
  fine.  Grumbacher is probably the cheapest and most readily available of
the
  products.  I think it has been used by pastel painters for many years.

  Paul
  www.PaulRoark.com




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Please visit the Group Homepage to check the Files, and other resources as
they are often being updated.

http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint

If you wish to receive no emails or just a daily digest, or you wish to
unsubscribe, please edit your Membership preferences by visiting this same
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Please follow these basic guidelines:
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MODERATORS OF DIGITAL BW, THE PRINT YAHOO GROUP SHALL NOT BE LIABLE TO YOU
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL OR EXEMPLARY
DAMAGES, INCLUDING BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFITS,
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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
TO USE THE DIGITAL BW, THE PRINT YAHOO GROUP; (ii) UNAUTHORIZED ACCESS TO OR
ALTERATION OF YOUR TRANSMISSIONS OR DATA; (iii) STATEMENTS OR CONDUCT OF ANY
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