[alt-photo] Re: PT/PD: TIME BETWEEN COATING AND PRINTING

[EJ Photo]

Bob, Since I don't coat with the intention of printing the next day, I can't
say have I seen changes, because for those few times I forgot that last
piece of coated paper, or just ran out of gas. It has been so few and far
between that I couldn't say what they where. 

If you were to do so, I'd keep it as dry as I could with as little heat as
possible, and then rehumidify to your standard humidity and allow about 45
minutes for that to happen. I have interrupted my day and left the paper in
the drying box while I went to lunch; no change. 

If one doesn't use enough PT and only PD (95%) I'd not expect to see a
change in anything IF the workflow was really working. i.e. when you dried
it got dry. When you humidified to 60% +/-5% that it was really at that
level in your paper.   Why, PT is faster dryer, and it sounds like many
don't really track how dry, dry is. 

I do notice that a premixed coating solution does give different results, so
I would not be too surprised to see a difference in a mixed solution that
sat for a day change a little. 

Heat, humidity, and UV will change it. Eliminate all three and you might not
see drastic changes.  


Eric Neilsen
Eric Neilsen Photography
4101 Commerce Street, Suite 9
Dallas, TX 75226
 
www.ericneilsenphotography.com
skype me with ejprinter
Let's Talk Photography
 
-----Original Message-----
From: alt-photo-process-list-bounces at lists.altphotolist.org
[mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of
BOB KISS
Sent: Thursday, June 07, 2012 9:01 AM
To: 'The alternative photographic processes mailing list'
Subject: [alt-photo] PT/PD: TIME BETWEEN COATING AND PRINTING

DEAR LIST,

            My usual procedure which, I believe, confirms to the practice
described in most of the books and other practitioners, is to coat my PT/PD
DOP paper, dry it, re-humidify it and then print immediately.  What
sometimes happens is that my workflow is interrupted and I either expose &
dev the paper later that day or even the next day.

 

            QUESTIONS:

1)    Have any of you found a significant change in speed, contrast, d-max,
etc from delaying between coating and printing?

2)    Do any of you purposefully and regularly pre-coat paper then use it
the next day or days later?

 

I remember when I first started I used that pre-made paper (by Sura
Steinberg and her hub) and that must have been at least

weeks old between coating and my printing with it.

            Anywho, any thoughts on this?  Just curious, not critical.

                        CHEERS!

                                    BOB

 

 Please check my website:  <http://www.bobkiss.com/> http://www.bobkiss.com/


 

"Live as if you are going to die tomorrow.  Learn as if you are going to
live forever".  Mahatma Gandhi

 

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