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Browse All : Printers - United States
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Title
Benjamin Franklin
Creator
Thom, Robert A., 1915-1979
Summary
One of America's greatest patriots, a framer of the Declaration of Independence, a statesman whose charm and tact played a tremendous role in securing for the Colonists the aid of France during the Revolutionary War, Benjamin Franklin was also a skilled scientist, author, editor, publisher and printer. Beloved among his many writings was the series of Poor Richard's Almanacs, published annually between 1732 and 1758 in issues as large as 10,000 on a hand press. The volumes quickly gained a wide and appreciative audience, and their homespun, practical wisdom exerted a pervasive influence upon the American character.
Title
Frederic E. Ives and the Half-Tone Process
Creator
Thom, Robert A., 1915-1979
Summary
The method by which most pictures are processed for letterpress printing is called photoengraving. The procedure was developed in 1878 by Frederic E. Ives, an American technician and inventor from Philadelphia. Ives' method consists of breaking down photos or drawings into tiny dots of varying sizes. The image to be reproduced is photographed through a ruled glass screen which breaks up the different tones into dots, the number of which is determined by the fineness of the ruled lines on the screen. It is then etched into relief on a copper plate for letterpress printing.
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