U of S | Mailing List Archive | alt-photo-process-l | RE: "New" Paper for Pt/Pd (and other iron processes, too)

RE: "New" Paper for Pt/Pd (and other iron processes, too)

Ok, found by myself...

Evidentially, the problem I mentioned is about gelatine-alum sizing
(together they cause sulfuric acid formation which damages paper's
fibers), not rosin-alum sizing.

"The Role of Alum in Historical Papermaking" - http://tinyurl.com/y63t4t
"Development of Permanent Record Papers" - http://tinyurl.com/yy8da7

The second document states rosin-alum sized paper can be very stable if
no excess of alum was used...


-----Original Message-----
From: Loris Medici [mailto:mail@loris.medici.name] 
Sent: 21 Kasım 2006 Salı 08:38
To: alt-photo-process-l@usask.ca
Subject: RE: "New" Paper for Pt/Pd (and other iron processes, too)

Thanks for the update Kerik. I guess that's good news for you people
living in the States (does Cranes have distributors / resellers in
Europe?)... We (Europeans) are quite happy with our Bergger COT 320 - I
presume ;)... Europeans, what papers do you use for Pt/Pd printing? (Or
for other iron processes...)

I just looked at the page (which Don provided the correct link - thanks
Don) and it says "rosin-alum sizing". *I'm not quite sure*, but I
remember that I've read something like "alum = no good (in terms of
longevity / archival properties)" somewhere / sometime... If that's the
case, I don't think that's a perfect paper for Pt/Pd printing (most
would want an archival paper for this). Can someone (preferably a
conservator) put me straight on this issue?


P.S. BTW Kerik, I still have to write list address manually (replacing
yours) into the To: field when replying to your messages - quite

-----Original Message-----
From: Kerik [mailto:kerik@kerik.com] 
Sent: 20 Kasım 2006 Pazartesi 22:50
To: alt-photo-process-l@usask.ca
Subject: "New" Paper for Pt/Pd (and other iron processes, too)

I have some good paper news, especially for current and former users of
Cranes Platinotype (aka Cranes Crest Natural White Wove, Cranes Business
Card Stock, Artificial Parchment, etc.)

With the recent problems with the "Platinotype Black Plague", many are
looking for other options. There is a "new" 50-year-old paper that found
me recently. I got a call a few weeks ago from John Zokowski from
Butler-Dearden Paper Co., a Crane's distributor offering samples of
Byron-Weston's Diploma Parchment paper for me to test with pt/pd
printing. (Byron-Weston is a subsidiary of Cranes.) This paper has been
made for 50+ years and is used for diplomas and other formal documents.
This paper is manufactured a bit on the acidic side, which is a good
thing for pt/pd and other iron processes. No pretreatment is necessary.

To make a long story short, this is the paper Platinotype should have
been but never was (at least not for a long time.) It produces a rich
black and a nice warm tone with pure palladium. It's a bit on the thin
side at 177 gsm, so for large prints, in needs to be handled with care.
It's also a bit on the yellow side for my taste, but a whiter version
and thicker version are in the works. It seems to clear very easily and
also seems to be relatively black-spot-free. Finally, where it really
shines over Platinotype is that the surface remains nice and smooth
after processing. It doesn't take on the fuzzy surface of processed
Platinotype. And, to top it off, it is very reasonably priced.

Go here http://www.crane.com/business/weston...palladium.aspx for info.
Contact John Zokowski for pricing and to place an order. Happy printing!

Kerik Kouklis