Re: Foxlee Gum Process

All,
Chris,
Thanks for posting it. Sounds very interesting. I would postulate that the
residual chromium in the gelatine layer is transferred to the gum layer
rendering it insoluble. Glycerin and acetic acid are likely helping with
the transfer.
Marek Matusz

> Chris,
>
> Maybe he just made a mistake once and did it this way and went "Eureka!"
>
> I think the Guinness hypothesis is the best though....
>
> Do you think the layer of pigment that is added later just adheres to the
> "sticky part" of the paper where the gelatin remains that was possibly
> hardened
> by the dichromate? Does the non-exposed gelatin wash off in the first
> development bath?
>
> Mark Nelson
> www.precisiondigitalnegatives.com
>
>
> In a message dated 6/24/04 10:48:17 AM, zphoto@uslink.net writes:
>
>
>> PS Correction!
>>
>> (mind you, no bichromate has been supposedly washed out in the water)
>> should say (mind you, no bichromate**, it** has been supposedly washed
>> out
>> in the water).  In other words, the bichromate is washed out (not
>> cleared,
>> tho)of the exposed print that is exposed under a normal neg,  and then
>> the
>> layer of pigment that is applied afterwards to this developed paper
>> contains
>> no bichromate.
>>
>> What is weird:  how, do you think, he would ever have devised this
>> process??
>> I mean, was he snorting Guinness or something?
>> Chris
>>
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Received on Thu Jun 24 11:16:03 2004