Bonnie Staffel on wed 16 may 07
Hi Clayarters,
I have learned that some printed papers use inorganic materials or =
oxides to
get the colors needed for the printed page. I have been able to =
transfer
these colors by burning certain printed papers onto the surface of my =
smoke
fired pots. This has been an ongoing experiment for me over a number of
years and find it very interesting. Somehow the burning paper/smoke =
goes
into the soft bisqued pot giving me some neat patterning in color. Some
other colors used in the printing process don't transfer at all except =
to
give the usual ecru or smoke shades. Is there some way to find out the
materials used in printers' inks? =20
You can see the results of some of my experiments on my website Contact
Page. Click on the Vertin Gallery, go to the Artists, click on my name =
and
two of the pots on the left are smoke fired. =20
I am also in the process of using some other printed materials to =
transfer
to the smoke fired pots. I will report on those as soon as I get =
something
worth while. =20
Bonnie Staffel
http://webpages.charter.net/bstaffel/
http://vasefinder.com/bstaffelgallery1.html
DVD Throwing with Coils and Slabs
DVD Introduction to Wheel Work
Charter Member Potters Council
stephani stephenson on wed 16 may 07
Bonnie wrote:
"... Somehow the burning paper/smoke goes
into the soft bisqued pot giving me some neat
patterning in color. Some
other colors used in the printing process don't
transfer at all except to
give the usual ecru or smoke shades. Is there some
way to find out the
materials used in printers' inks? "
Hi Bonnie, i understand that many of the same
pigments we use in ceramics form the same pigment
base for inks...copper, chrome, iron, etc.
the inks would use a different binder and also a
finer ground pigment.
Acrylic or oil paints with a high pigment
concentration, such as Golden brand acrylics , will
also flash in smoke and saggar fires.
cheaper paints tend not too because they h ave more
filler and a lower % of actual pigment.
you could try different colors from paints or inks and
try to identify the pigments.
some of the paint names and ink names are different ,
but naturally occuring earth pigments are at the
bottom of many of them... Pthalo greens and blues in
ink and paint are synthetic copper based pigments.
what interests me too though are synthetic pigments...
colors such as quinacridones, dioxizine purple,
etc.....
many others are probably weaker , or are mainly
filler, or burn out.
but i bet good old copper, etc are flashing on your
pots and perhaps the binders and other components of
the ink are determining how it is laid down in the
burn....
i use to wrap little packets of copper or yellow iron
together with magnesium sulfate and baking soda and
place them next to pots in the firiing also, to get
spotting effects.
just musing of course!
there is a marvelous little book on color called
"Colors: The story of Dyes and Pigments" by Francois
Delamare and Bernard Guineau.. it is the story of the
history of pigments and their uses....
Stephani Stephenson
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Bonnie Staffel on thu 17 may 07
Thank you Stephanie, for that very informative post. I will make a copy of
it and explore when I get to that stage again this fall. Right now is
production time to take care of the summer sales and gallery needs.
The rock pigment page in Dick Blick's catalog also was very interesting.
Bonnie Staffel
http://webpages.charter.net/bstaffel/
http://vasefinder.com/bstaffelgallery1.html
DVD Throwing with Coils and Slabs
DVD Introduction to Wheel Work
Charter Member Potters Council
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