[alt-photo] Re: ziatype

[Mark Nelson]

Thanks Eric,

I agree about vacuum. I use 5-10 lbs at the most. 

Mark Nelson
www.PrecisionDigitalNegatives.com
PDNPRint Forum @ Yahoo Groups
www.MarkINelsonPhoto.com

sent from my iPhonetypeDeviceThingy

On May 1, 2012, at 6:16 PM, "EJ Photo" <ejnphoto at sbcglobal.net> wrote:

> In my work with glycerine as an additive to coating solutions, you'd need to
> add a lot to get it sticky to a point of grabbing a neg. I'd expect a
> problem more often with too high a pressure in general. Just because a
> vacuum can draw 30 or 35 psi, does that mean you should always use it? 
> 
> I would add about 3 drops or so for an 11x14. I will need to go back and see
> if that was tracked.  
> 
> 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
> Mark Nelson
> Sent: Tuesday, May 01, 2012 2:53 PM
> To: The alternative photographic processes mailing list
> Subject: [alt-photo] Re: ziatype
> 
> Loris,
> 
> A stupid question..
> 
> If you add glycerine to the mix to get ziatype to work better in low
> humidity, what keeps the emulsion from sticking to the negative?
> 
> Thanks,
> Mark
> 
> 
> Best Wishes,
> Mark Nelson
> 
> Welcome to the Precision Digital Negatives Home!
> PDNPrint : Precision Digital Negatives Forum
> Mark I. Nelson Photography - Welcome
> 
> On May 1, 2012, at 9:28 AM, Christina Anderson wrote:
> 
>> Thanks, Loris,
>> How many drops, Loris, per drop count? I have glycerin I could try. 
>> 
>> Anything to make Montana's lack of humidity work!
>> 
>> Good to know about the AFO because mine is old, too and I was wondering if
> I should worry.
>> Chris
>> 
>> Christina Z. Anderson
>> christinaZanderson.com
>> 
>> On May 1, 2012, at 1:40 AM, Loris Medici wrote:
>> 
>>> Dear Christina,
>>> 
>>> Maybe glycerin can help in that regard: I can have full printout (with
>>> pop pd) and a very neural color even at 22C / 30%RH, when I add
>>> glycerin (another strong humectant) to the coating solution. Haven't
>>> noticed any adverse effect so far...
>>> 
>>> I have AFO from two sources: 1. B&S, 2. Fluka, and both are in semi
>>> opaque / white plastic containers. Those containers probably don't let
>>> UV inside, because I still don't have any problems with the container
>>> from B&S, 6-7 years after purchase, and with the Fluka container too.
>>> (The - very similar material - Fluka container is relatively new, only
>>> 1 year...)
>>> 
>>> Regards,
>>> Loris.
>>> 
>>> 
>>> 2012/5/1 Christina Anderson <zphoto at montana.net>:
>>>> ...
>>>> It seems the fumed silica is another "hygroscopic" ingredient as is the
> lithium
>>>> pd and the cesium pd, all serving to keep moisture in the layer to make
> a DOP
>>>> more POP is what I gather from my reading.
>>>> 
>>>> I have some AFO here that I've had a few years. Funny, it is packaged in
> a
>>>> semi-opaque plastic container...guess it is not that light sensitive...
>>>> ...
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