"New" Cyanotype - & Pt/Pd proportions

Terry King ( 101522.2625@compuserve.com)
Mon, 06 January 1997 6:35 AM

Dan

I do not know about Platine as others on the list seem to have to give it
special treatment to get it to work properly.
My experience, on the papers I use, is that you can get a good print from a
negative with a range of from 1.5 or so to 2.2 or so depending on the
proportion of Pt to Pd in the mix. The harder the neg the more the Pd.

>an someone who double coats outline their method? I usually find that
>the Platine soaks up the second coat before I can spread it with my
>glass rod.

Try sizing first with a 1 % gel of deionised ossein from Bostick and
Sullivan.

>Does anyone humidify their paper before printing? If so, what is your
>method?

I have covered this more than once in the archive. Place the paper in a
cupboard with a dish of warm water before coating then fry the paper and
size humidify again if you have Pd in the mix..

>I have found results similar to Judy's- I can see the Pd wash away in
>the developer if I dry the paper (with a hair dryer, set on warm)
>immediately after coating. On the other hand, if wait more than 5
>minutes or so, the print has a "sunken" or dull appearance, as though
the sensitizer has soaked too far into the paper.

You will not have these problems if you size and use a flow of air from a
fan heater to dry.

Terry

----------