RE: Ware/Malde-Ziatype-DOP palladium,was RE: "New" Paper for Pt/Pd (and other iron processes, too)

[EJN Photo <ejnphoto@sbcglobal.net>]

Dick, Then when are you going to rewrite they Ziatype compared to XYZ? If so
much has changed, and there is still info that is up from 1996, the newbies
out there will no doubt appreciate it. It would also help many understand
the system known as a Ziatype. 

 

Eric Neilsen Photography
4101 Commerce Street, Suite 9
Dallas, TX 75226
214-827-8301
http://ericneilsenphotography.com
 
Skype : ejprinter> -----Original Message-----
> From: Richard Sullivan [mailto:richsul@earthlink.net]
> Sent: Friday, December 01, 2006 10:54 PM
> To: alt-photo-process-l@usask.ca
> Subject: RE: Ware/Malde-Ziatype-DOP palladium, was RE: "New"
> Paper for Pt/Pd (and other iron processes, too)
> 
> That article is mostly about the discovery of the process and
> gives a big
> hat tip to Pizzighelli. It was written in 1996 and much has
> been learned
> since.
> 
> The issue is rather than adjusting humidity to change color one
> changes the
> metal in the double palladium salt. Lithium produces cool tones
> in a wide
> humidity range and cesium produces warm tones in the same
> range. Thus the
> color is mostly dependent on the double salt for its tonal
> coloration rather
> than on the humidity level in the paper.
> 
> One can also use sodium tungstate or gold chloride as color
> controls as
> well.
> 
> At the time I developed the process I really expected it to be
> a minor
> process in the pd/pt printing world but it has proven to be a
> major sales
> item and especially so for school orders. Christopher James in
> his book says
> it the easiest of the platinum processes. In my classes at the
> local college
> I have found that the students in general prefer the Ziatype
> and I think the
> fact that it is a printing out process is the reason for their
> preference.
> 
> Bostick & Sullivan puts considerable effort into research and
> development.
> The Ziatype and NA2 are just two results from our efforts. We
> are now
> producing carbon tissue and are soon to be producing 4 color
> tissues. Sandy
> King got my carbon mojo running at APIS 2001 and we have spent
> countless
> hours designing a machine and tissue formulation. We are
> currently exploring
> several interesting processes and have hopes for their
> commercial success.
> 
> We now have an Epson 9800 and are producing negatives for
> several major
> atelier printers.
> 
> Many thanks to the folks here who have supported us for the
> last 27 years.
> 
> --Dick Sullivan
> www.bostick-sullivan.com
> 
> 
> 
> -----Original Message-----
> From: Camden Hardy [mailto:camden@hardyphotography.net] the
> fact that it is
> Sent: Friday, December 01, 2006 5:29 PM
> To: alt-photo-process-l@usask.ca
> Subject: RE: Ware/Malde-Ziatype-DOP palladium, was RE: "New"
> Paper for Pt/Pd
> (and other iron processes, too)
> 
> I wasn't making it up!  From Dick Sullivan's article, The
> Ziatype Compared
> to the Ware-Malde Process found at
> http://www.bostick-sullivan.com/techart.php:
> 
> "The lithium salt, unlike the rest tended to produce an almost
> blue black
> image throughout a wide humidity range. Originally I was not
> particularly
> looking for a POP process, but the apparent hygroscopicity of
> this
> material pointed me in that direction.
> 
> My thoughts on this were that if I could find a corresponding
> "brown"
> producing component that could be mixed with the lithium
> palladium salt,
> we might have a system for POP printing that was largely
> independent of
> humidity."
> 
> Am I completely reading this wrong, or does this say that
> ziatype isn't as
> humidity-dependent as other palladium processes?
> 
> 
> Camden Hardy
> 
> camden[at]hardyphotography[dot]net
> http://www.hardyphotography.net
> 
>