Re: Argyrotypes
Don,
I think Fabriano 5 could be Fabriano Classico in the US
of A.
Regards,
David
H
On Nov 23 2006, Don Bryant wrote:
Dear Alt Photo List,
Today I received two Argyrotype
prints from an individual as part of an
alternative print exchange
organized through APUG.COM.
The prints were made on a paper
identified as Fabriano 5 (which I am not
familiar with and are the
first Argyrotypes I've ever seen.
These two prints had such
delicate tonality that I am compelled to try the
process. These two
brown tone prints have a color and gradation that I have
never seen
matched with the Van Dyke Brown process, toned or untoned. I am
very
impressed with the prints.
Does anyone know if Fabriano 5 is
marketed in the US? Perhaps by another
name?
Thanks,
Don Bryant
-----Original Message-----
From: Venkatram Iyer [mailto:eyeear@telus.net]
Sent: Wednesday,
November 22, 2006 12:42 PM
To: alt-photo-process-l@usask.ca
Subject: Re: Some Kallitype observations
Sandy,
The KOX I use is the mono-potassium salt, so the
solution is acidic.
Rajul
On 22-Nov-06, at 6:18 AM, Sandy
King wrote:
>
Hi Venakatram,
Thanks for
sharing these results. A > few questions.
1. How are you
gelatin sizing in terms of > percentage solution and
method of
sizing?
2. What is > your clearing agent, method, and
time.
3. Are you mixing the > potassium oxalate from oxalic
acid and potassium
carbonate or > buying it already mixed? If the
former, what is your
mixing > procedure and at what pH do you
maintain the solution?
Sandy > King
At > 3:31 PM -0800 11/21/06, Venkatram
Iyer wrote:
>> Hello All,
I would like to share some
recent observations >> using the Kallitype
procedure.
Papers: Stonehenge B >> side (STHG-B) prints better than the other
side.
Sidedness was
>> >> determined by sxs
comparison of marked sides.
>> Arches Platine (AP 310 gsm) needs
less expo than STHG-B, &
>> yields richer, more lustrous
tones than STHG-B
>> Graphix Vellum48 shows greater detail than
AP
>> Gelatin-sized, formaldehyde-hardened AP and STHG-B produce
>> sharper prints with
>> cleaner highlights than
unsized controls.
>> Unsized paper produces delicate softer
prints with subtler
>> colors.
>>
>>
Graphix Vellum 48:
>> - pre-coat with oxalic acid
>>
- use 2 coats of emulsion
>> - exposure will not produce a
visible image. So pre-establish
>> exposure w steptab
>> - Pd toner >> cool browns; Au toner >> cool B/W
>>
>> AP or STHG-B:
>> - do not need an
oxalic acid pre-coat
>> - one thin coat works well; Dry it,
equilibrate paper to room
>> conditions, then expose.
>>
>> Emulsion:
>> - a 6:4 AgNO3:FO mix works
better IME than the 5:5
>> - additives (Au, Pd or Pt) block up
shads; this may be corrected >> by
decreasing exposure
>> - Steptab prints indicate that tonal separations are cleaner
when
>> additives are omitted.
>>
>>
Exposure: Optimum exposure is reached when shadows print a
>>
medium-dark ochre.
>>
>> Developer:
>> -
4% KOX develops the print slowly to a cool brown after 5' of
>> development. There was
>> no observable bronzing.
>> - With increasing concentration ( 5, 10 and 20% KOX),
development >> is
>> rapid and proceeds to B/W,
bronzing occurs in shadows, and
prints
>> are muddier.
>>
>> Toner effects depend on:
>> - the
presence of additive in the emulsion
>> - sizing of paper
>> - possibly local factors (water composition, temperature,
>> humidity,
etc)
>> - selenium toning (cheap
toner!) of sized AP coated with the 6:4 >> mix
>>
printed in cool browns, and showed good detail across tonal
range.
>>
I have found Sandy King's and Carmen Lizardo's
Kallitype >> publications
very helpful.
Please feel
free to >> comment/confirm/complement the above.
Rajul
>