[alt-photo] Re: red spots in pt/pd

[Christina Anderson]

Hi Eric,

No experience of this at all which was why I thought it so weird. I can't imagine what "red" spots would look like in pt/pd, but maybe the red is, in fact, an orangey color or something.

I have had the dreaded black spots as have my students :(

So if it is a paper issue only then no need to worry, especially if no one has seen it since 1999! 
Chris

Christina Z. Anderson
christinaZanderson.com

On Jan 22, 2012, at 7:54 AM, EJ Photo wrote:

> Chris, you will notice that back in 1999 if memory serves me well was a
> second generation of papers that were good and then went bad period of time
> for PT?PD printing. I recall David Michael Kennedy having a whole batch of
> Rising's Gallery 100 turn pink on him. 
> 
> I would agree that many of these spots can be attributed to bit and pieces
> left in it from manufacturing. The rollers, the cutters, the seeds, and
> fiber, etc not to mention the sizing both internal and external that clumps,
> puddles, foams, etc..  It is paper. Then the solutions can be a problem.
> manufacturing and age can both allow platinum metal to form in our salts
> leading to very fine streaks, weird patterns, and more. 
> 
> Were you experiencing these in our prints today? Or just testing the memory
> of aging printers?   lol
> 
> 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
> Christina Anderson
> Sent: Saturday, January 21, 2012 10:45 AM
> To: Alt List
> Subject: [alt-photo] red spots in pt/pd
> 
> Found this post very interesting...
> 
>> From 1999.
> 
> Black spots. Red spots. Pink Pt/PD seemed to be the trouble at the time.
> 
> 
> Keith Schreiber (jkschreiber at worldnet.att.net)
> Thu, 15 Jul 1999 02:26:01 -0700
> 
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> Last year there was a discussion about spots on Pt/Pd prints and Eric 
> Neilsen wrote the following: 
> 
>> The little black specs I have passed off as impurities in the chemicals 
>> or paper, or both. The BIG black spots, as on the Beinfang print can be 
>> imperfections in the paper that allow the solution to "puddle" on that 
>> spot. And the red spots that I have seen are from the rubber rollers of 
>> the paper making process. 
> 
> I have just encountered red spots for the first time and am wondering if 
> this is speculation or certainty, and does anyone know exactly what they 
> are. I am printing palladium developed in K oxalate and cleared in 
> sulfite/EDTA. 
> 
> The spots don't appear (or at least I haven't noticed them) until well into 
> the wash phase. The paper I'm using is the last of a batch of Lenox 
> purchased in '96 from Daniel Smith. Up to now it has worked beautifully, but
> 
> today 3 of 3 prints on it have red spots. 
> 
> Any ideas are much appreciated. Eric? anyone else? 
> 
> Regards to all, 
> Keith 
> 
> Keith Schreiber 
> jkschreiber at worldnet.att.net 
> Christina Z. Anderson
> christinaZanderson.com
> 
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