The Great
Attraction of Lithography
Creating an image on a lithographic stone
is an action as natural as drawing on paper. This also means that continuous
tone may easily be achieved unlike in an etching. The effect of a lithograph
is similar to a drawing or watercolor. The relationship between artist
and printer is essential and famous collaborations exist where artists
have refused to work with any but their favorite printer. Many historical
exponents of the art of lithography include Goya, Delacroix, Daumier,
Gericault, Manet and Toulouse Lautrec. Henry Moore is also well known
for his use of the medium in the century.
Lithography: The Process
Lithography was discovered in Germany
by Aloys Senefelder in 1798. It is based on the principle that limestone
is naturally attracted to oil and that oil and water have a natural
antipathy, refusing to mix. In hand-made lithographs the artist draws
or paints directly onto the limestone with a greasy lithographic material
either in pencil or liquid form. By a succession of simple chemical
processes these marks are bonded to the surface and made highly receptive
to oil in the areas marked with the lithographic material and fully
resistant to water on the rest of the stone. Upon printing, the plate
surface is first dampened with water that adheres to the non-image water
receptive areas. The artist then rolls a thin layer of oil printer's
ink on to the stone, which is repelled by the water but accepted by
the oil receptive image areas. In traditional stone lithography, the
image is transferred to paper through a simple, flat bed screw press.
The image in such cases has to be drawn in reverse on the stone so that
it becomes right reading on the paper. The stone is ground down after
the edition is completed, effacing the plate permanently so the image
can never be printed again.
Color
As with almost every printmaking process,
hand-made lithographs require the production of a new plate (stone)
for each color. It is not uncommon to print in up to twenty or more
colors, so the artist can become involved in a long process of production,
normally working in close association with a master printer. In stone
lithography, the artist/printer must grind the stone down after he/she
has completed the run of an individual color in order to erase the previous
forms drawn on the stone with the lithographic material. Then the artist
can draw on the stone the new forms for the next color he wishes to
print. The artist repeats this process until all the colors have been
printed and the image is complete. The artist must have a through understanding
of how the colors will marry once they have been printed on top of one
another.