How does offset lithography work?
History jQuery(document).ready(function(){ jQuery(‘#jsArticleStep1 span.image a:first’).attr(‘href’,’http://i.ehow.co.uk/images/a04/oq/hf/offset-lithography-work-1.1-800X800.jpg’); }); Lithograph of Durer’s The Printer Johannes Gutenberg’s invention of the movable-type printing press in the 15th century made reading material available to a wide variety of people, and ignited the growth of literacy and the great universities of Europe. It also transformed printing into a craft as well as an art. Gutenberg’s press, revolutionary as it was, could only print one sheet at a time, and had to be re-inked for each impression. The rotary press, consisting of a curved cylinder that could turn and print pages on a continuous sheet of paper, significantly increased the number of sheets that could be printed. But individual print quality varied because ink still had to be deposited directly on the plate to make an impression. Steel sheets replaced the tin type, opening up a wide range of usefulness
