Digital BW, The Print

Paul 

Thanks for this.  I have ordered some Lascaux.  Did you find much shift
across the other steps?  Wondering if it is necessary to linearise a strip
post spraying...

Regards

Steve


From: "Paul Roark" <paul.roark@verizon.net>
Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
Date: Thu, 10 Jun 2004 21:46:15 -0700
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Subject: RE: [Digital BW] Re: Laquer on matte prints?

Steve wrote:

>I have been using Lyson Print Guard (same product) on my HPR prints for
>framing without glazing.  It looks fine but a measured step wedge will show
>a significant shift in density post spraying, including a large drop in
>dMax.


I've seen and measured this with UltraSmooth and PremierArt Print Shield,
which, as you note, appears to be the same as Lyson Print Guard (though the
Premier Imaging people deny they are the same).

Perhaps related to this is the observation by another forum member that the
surface of smooth prints can feel a bit gritty after spraying with
PremierArt Print Shield, at least when used in hot, dry conditions.  After
looking into it, this person concluded that the solvents in the PremierArt
Print Shield were so quick to dry that the coating was starting to solidify
before hitting the print.  Lascaux Fixativ, however, uses solvents that are
less volatile and, thus, may keep its acrylic in liquid form long enough to
more effectively surround the pigment particles and lock them to the
surface.

Today I did a comparison of the two sprays on UltraSmooth.  I sprayed two
test strips of UltraSmooth with 3 coats of the 2 products.  The dmax started
at 1.61.  The test strip sprayed with PremierArt Print Shield had a dmax
drop to 1.52 and 1.51.  The test strip sprayed with Lascaux Fixativ had the
dmax drop to 1.59 and 1.57.

Perhaps related to this is my finding that PremierArt Print Shield is more
effective at reducing the bronzing on glossy papers than is the Lascaux.
With Lascaux I'll have to find a different procedure than my usual 3-4
quick, light sprays.

It appears to me that the PremierArt Print Shield tends to stay on the
surface of the print more, whereas the Lascaux appears to soak in more.  The
Lascaux solvents are, apparently, less volatile -- they evaporate slower.
In addition to the chemist's conclusions in this regard, I simply can smell
the Lascaux on the print longer.

I might add that the drop in dmax does not happen with all matte papers.
UltraSmooth is the paper that I like and use frequently that definitely does
have a tendency to have this happen.  From now on, I might be using Lascaux
on it instead of PremierArt Print Shield.  (The Lascaux is also the Rohm &
Haas B72 formula that is most highly thought of by the conservation
industry.)

Paul
www.PaulRoark.com 




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
page.

Please follow these basic guidelines:
- As threads develop, trim off excess portions of earlier messages to keep
them short.
- Good manners are required at all time. No personal attacks or flames.
Hostile, aggressive or argumentative users may be removed from the
membership without notice.
- Keep your posts and threads related to the group topic of digital B&W
printing. Users who persistently make off-topic posts may be removed from
the membership.
- By posting on this forum you agree to abide by the group rules and
guidelines, and to abide by the actions and decisions of the group Owner and
Moderators. See “Group Topic, Rules and Guidelines” in the Files section:
http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/files/

BY PARTICIPATING IN AND/OR POSTING MESSAGES TO THE DIGITAL BW, THE PRINT
YAHOO! GROUP YOU EXPRESSLY UNDERSTAND AND AGREE THAT THE “OWNER” AND
“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,
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
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
THIRD PARTY ON THE DIGITAL BW, THE PRINT YAHOO GROUP; OR (iv) ANY OTHER
MATTER RELATING TO THE DIGITAL BW, THE PRINT YAHOO GROUP.



Yahoo! Groups Sponsor
 
 ADVERTISEMENT
 <http://rd.yahoo.com/SIG=1298urb97/M=285832.5035993.6164948.1793556/D=group
s/S=1705019182:HM/EXP=1087015623/A=2178650/R=0/SIG=14drisgb3/*http://www.hou
seholdfinance.com/ln/TrackingServlet?cmd_MediaCode=&fc=APS&mkt=000&mc=01PSYA
YA004001B220000U0300L00300000>


Yahoo! Groups Links
* To visit your group on the web, go to:
* http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/
*  
* To unsubscribe from this group, send an email to:
* DigitalBlackandWhiteThePrint-unsubscribe@yahoogroups.com
<mailto:DigitalBlackandWhiteThePrint-unsubscribe@yahoogroups.com?subject=Uns
ubscribe> 
*  
* Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
<http://docs.yahoo.com/info/terms/> .




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