Re: gold print

Well, I will try this with KAuCl4 (and maybe NaOW) tomorrow. I like
the color very much - I'm very excited!

Since KAuCl4 = 377.8765 g/mol and Ammonium Iron(III) Oxalate =
374.0212 g/mol. I will simply mix 20% of each (omitting 1% molar mass
difference) and try to print some test strips mixing 1:1.

Marc (and Marek), I guess the reddish/pinkish colors are obtained when
the RH of paper is low (below %40). Am I right? Probably the printout
won't be strong at this RH... What developers do you use? Or, do you
use any developer? (Mike Ware's article mentions 1% Citric Acid,
Oxalic Acid and IIRC Tartaric Acid for New Chrysotypes). How many
steps of development I should expect?

Can you (both) please elaborate some details such as RH and printout
degree, color, developer(s)?

Thanks in advance,
Loris.

----- Message from marekmatusz@hotmail.com ---------
     Date: Wed, 14 Jun 2006 18:05:35 +0000
     From: Marek Matusz <marekmatusz@hotmail.com>
Reply-To: alt-photo-process-l@usask.ca
  Subject: Re: gold print
       To: alt-photo-process-l@usask.ca

> That does seem like a lot of gold. There also seems to be a mismathch
> of gold and iron. If I recall correctly the new chrysotype would be
> about 0.8 g of gold chloride in 6 ml of water (I dont have my notes
> handy). I use the same gold solution to make prints without the use of
> the new chrysotype chemistry, just gold solution and FAO. I don't doubt
> that the formula that you used worked (nice print), but it aseems that
> a lot of gold was simply wasted and washed away in the processing.
> Gold is very expensive again
> Marek, Houston
>
>
>> From: marc bruhat <m.bruhat@free.fr>
>> Reply-To: alt-photo-process-l@usask.ca
>> To: alt-photo-process-l@usask.ca
>> Subject: Re: gold print
>> Date: Wed, 14 Jun 2006 18:14:59 +0200
>>
>> yes! in part A.
>>
>>
>>
>> ----- Original Message ----- From: "Michael Koch-Schulte" <mkochsch@shaw.ca>
>> To: <alt-photo-process-l@usask.ca>
>> Sent: Wednesday, June 14, 2006 3:28 PM
>> Subject: Re: gold print
>>
>>
>>> Is that right? 6 ml. of H20 for every 1 g. of gold chloride?! Ouch!
>>>
>>> ~m
>>>
>>> ----- Original Message ----- From: marc bruhat
>>> To: alt-photo-process-l@usask.ca
>>> Sent: Tuesday, June 13, 2006 2:54 PM
>>> Subject: Re: gold print
>>>
>>>
>>> Dear Loris, thank you for this news but I no longer in fact, it was just an
>>> experience.
>>> The formula was :
>>>
>>>
>>> A-
>>>
>>> water : 6 ml.
>>> gold chloride: 1 gr.
>>>
>>> B-
>>>
>>> Eau distillée : 300 ml.
>>> ammonium ferric oxalate: 100 gr.
>>> water to make 500 ml.
>>>
>>> Mix :
>>>
>>> Solution A : 6 ml.
>>> Solution B : 5,5 ml.
>>> ----- Original Message ----- From: Loris Medici
>>> To: alt-photo-process-l@usask.ca
>>> Sent: Tuesday, June 13, 2006 11:30 AM
>>> Subject: RE: gold print
>>>
>>>
>>> Hi Marc, it's beatiful. From your explanation, I understand this is P.O.P.
>>> Palladium / Ziatype "sans Palladium" right? Have you tried to add Sodium
>>> Tungstate (NaOW) to the coating solution? NaOW is used to lower
>>> the emulsion
>>> contrast in P.O.P. Palladium / Ziatype. Certainly that will have an effect
>>> over the image color (it warms the color w/ Palladium) but I think it's
>>> worth to try - to see what happens. BTW, what was the strenght of the gold
>>> solution? (5%?)
>>>
>>> Regards,
>>> Loris.
Received on 06/15/06-12:02:29 PM Z