Digital BW, The Print

Has anyone out there who has been using Hahnemuhle PR for a long time 
had any yellowing problems? I am about to spend a lot of time and money 
on printing a portfolio with this paper and my concern is the fact the 
HPR has optical brighteners.

I did give Entrada Natural White paper that does not contain OB's but I 
did not like the paper as much as HPR.

-Jeff

Hi Jeff,

I have been using Hahnemuhle P Rag since it became available several years ago. 
Hahnemhhle has been making rag art papers for centuries and they only use the finest 
materials and have an excellent reputation. No, I have not seen anything on PR yellow and 
do not expect to in my life time. If I did I wouldn't be using this media and selling it to my 
most important clients. If you really have a paranoia about pollution effecting your prints 
many decades down the line ( or centuries) I would spray them with the Premier Art  UV 
spray. Some people have stated that they think this spray reduceds the d-max  a little. I 
haven't seen it personally in my color or Lyson monochrome work. I love this spray and 
use it not only as a sealant aganst contaminants and humidity in the air but also to protect 
aganst skuffing, flaking, and scratching.


Optical brighteners are not new. In fact I imagine most if not all of the silver print masters 
that you have respected throughout the years used fiber papers with optical brighteners. 
Most all commercial  fiber papers since the 50's at least used them, such as Agfa, Ilford, 
Kodak, Oriental, etc, etc.

I wouldn't worry about P Rag. Behind glass ( or sprayed) even the cheap Epson Enhanced 
Matte has good permanence ratings.

Uh, Oh, I've got to go... that was Fed-Ex delivering a  roll of Photo Rag, no joke...

John

I





--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Jeff Magidson <jef.jef@v...> 
wrote:

> Has anyone out there who has been using Hahnemuhle PR for a long time 
> had any yellowing problems? I am about to spend a lot of time and money 
> on printing a portfolio with this paper and my concern is the fact the 
> HPR has optical brighteners.
> 
> I did give Entrada Natural White paper that does not contain OB's but I 
> did not like the paper as much as HPR.
> 
> -Jeff

> I have been using Hahnemuhle P Rag since it became available
> several years ago.
> Hahnemhhle has been making rag art papers for centuries and they
> only use the finest
> materials and have an excellent reputation. No, I have not seen
> anything on PR yellow and
> do not expect to in my life time.

I do recall testing in which PR warmed slightly due to changes in the OBA's
and then stabilizes after this initial warming. In real time use it equated
to a slight warming over the first 5-10 years I think.

Now, if only I could remember where the testing report was....

Also, I believe Hahnem\ufffdhle is bringing out a paper (fairly similar to PR?)
which has no OBA's - so is very slightly warmer to start with but
(presumably) doesn't change as much within those first few years.

Jeff - other options would be the (more expensive) "naturally" white Arches
Infinity (I don't think you will find anything much more stable...) or
something like the Epson Ultrasmooth.

tim a