U of S | Mailing List Archive | alt-photo-process-l | RE: pt/pd mounting

RE: pt/pd mounting

Well, it took a while, but we finally got some interesting conversation
going.  Thanks to those who contributed.

So, to make sure I understand this, here's my take on the topic (please,
correct me if I'm misunderstanding).  In theory, pt/pd has enough acid
problems to worry about without using an acid board, so use buffered. 
However, there's no proof either way that buffered/neutral pH board
actually increases the life of the print.  Right...?

Loris, your polyurethane comment intrigued me.  This could add a very nice
aesthetic effect to the series in question, so I may have to give it a
try.  I would be very interested to hear the results of your tests if/when
you and Ryuji get around to it.  Keep me posted!

Camden Hardy


On Mon, September 11, 2006 3:11 pm, Loris Medici wrote:
> AFAIK, polyurethane wood finish (like Hydrocote) is impermeable to air and
> water. If one coats both the front and the back of the print with
> polyurethane that should protect the print very successfully (at least in
> theory). I remember Ryuji had offered me his time by doing a peroxide
> fading(?) test if I send him a couple of samples (polyurethane coated
> Vandyke). Well if he's still interested I'm willing to send him few
> samples
> (one coated on the front only, the other both sides and an uncoated
> control
> strip)...
> Regards,
> Loris.
> -----Original Message-----
> From: EJN Photo [mailto:ejnphoto@sbcglobal.net]
> Sent: 11 Eylül 2006 Pazartesi 23:00
> To: alt-photo-process-l@usask.ca
> Subject: RE: pt/pd mounting
> ...
> The process is subjected to a variety of pH environments and different
> practitioners will use different clearing bath and what not affecting the
> pH
> of the paper. I doubt any one has studied the new sprays meant for ink jet
> prints on the longevity of PT/PD prints. If the air is what carries the
> sulfur, than eliminating contact with the air seems like a place to start.
> Or will the sulfur migrate through the protective surface?
> ...