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The prospect of using steam power in printing prompted research into means by which the different operations of the printing process could be joined together in a single cycle. In 1803, in Germany, Friedrich Koenig envisaged a press in which the raising and lowering of the platen, the to-and-fro movement of the bed, and the inking of the form by a series of rollers were controlled by a system of gear wheels. Early trials in London in 1811 were unsuccessful. Presses with a mechanized platen produced satisfactory results after the perfection, in the United States, of the “Liberty” (1857), in ...(100 of 26569 words)