Digital BW, The Print

Are there any less expensive alpha-cellulose papers without OBE's?
The Kayenta and Premier Premium Matte are pretty brilliantly white
(with the latter having a slight magenta cast, btw).

Scott

Paul Roark wrote:

> > I believe I recall the primary problem with optical brighteners in
> > paper being that they have a tendency to lose their whiteness over
> > time.
>
> Yes, the affect on the pigments or paper other than the color of the paper
> is not clear. Some of the older OBAs apparently had reactive byproducts
> that attacked the image or substrate (like the original RC papers). On the
> other hand, some brightened papers do very well on Wilhelm tests.
>
>
> > I'm assuming this shows up as "yellowing", ...
>
> Yes, the yellowing usually occurs relatively early in a fade test and then
> stabilizes. I think the following spectrophotometer Lab (a, b) numbers 
> from
> an EEM fade test are typical:
>
> Before fade test EEM paper white (a, b) = (1.26, -3.82)
>
> After the fade test (a, b) = (-0.89, 3.70)
>
> I believe this is a delta E of 7.8.
>
> The most obvious change is along the "b" (yellow-blue) axis, with the 
> paper
> going from -3.82 blue to +3.7 yellow.
>
> So, the paper starts the fade test looking bright white and ends the test
> looking like one of the non-OBA, "natural" papers.
>
> I like the natural papers, which stay essentially the same in these tests.
> I personally don't like the way the brightened papers look (too cold) next
> to my matte board. Additionally, however, I don't like the idea that
> someone might open up one of my matted prints and see a "shadow" from the
> over-matte. The yellowing of the paper will not give a feeling of
> confidence in the quality of the materials.
>
> 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 \ufffdGroup Topic, Rules and Guidelines\ufffd 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 \ufffdOWNER\ufffd 
> AND \ufffdMODERATORS\ufffd 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 \ufffdOWNER\ufffd AND \ufffdMODERATORS\ufffd 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 LINKS
>
>     * Visit your group "DigitalBlackandWhiteThePrint
>       <http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint>" on
>       the web.
>     * To unsubscribe from this group, send an email to:
>       DigitalBlackandWhiteThePrint-unsubscribe@yahoogroups.com
>       <mailto:DigitalBlackandWhiteThePrint-unsubscribe@yahoogroups.com?subject=Unsubscribe>
>     * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
>       Service <http://docs.yahoo.com/info/terms/>.
>
>
> ------------------------------------------------------------------------
>