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While for more than sixty years,
since its development, lithographic printing had been done on hand-operated
presses, Senefelder was certain that all the operations could be better
carried out mechanically. The first lithographic machine was in operation
by 1852. This press had a bed that carried the stone, a cylinder with
grippers for the sheet, a feed-board, damping and inking rollers. The
flywheel was turned by hand. Between 1864 and 1875 various flat-bed presses
were made in Britain, France and Germany. However, lithographic stones
were heavy, cumbersome, difficult to register, and liable to breakage.
Senefelder found that metals such as zinc had the same properties. Zinc
was cheaper and lighter than limestone and could be curved around the
cylinder of a printing press.
Early flat-bed litho presses required
a great deal of power and the movement of these machines was clumsy. In
addition, the rollers were comparatively noisy.
Zinc was cheaper and lighter than limestone and made for a more efficient
printing surface. As a result, metal plates became widely used on flat-bed
machines as an alternative to stone. This technical and practical progress
with thin, flexible printing surfaces paved the way for the rotary type
of machine that appeared towards the end of the nineteenth century.
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