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Documents of the period, including those relating to a 1439 lawsuit in connection with Gutenberg’s activities at Strassburg, leave scarcely any doubt that the press has been used since the beginning of printing. Perhaps the printing press was first just a simple adaptation of the binding press, with a fixed, level lower surface (the bed) and a movable, level upper surface (the platen), moved vertically by means of a small bar on a worm screw. The composed type, after being locked by ligatures or screwed tight into a right metal frame (the form), was inked, covered with a sheet of ...(100 of 26569 words)