Newspapers:
Of course, the original revolutionary in the field of printing was Johann Gutenberg who developed the first printing press in the fourteenth century. The emergence of the rotary press, which supplanted the steam printing press as the premier way of circulating newspapers in the 1930’s, made mass production problem. Technologies emerged for high quality color separation. The web offset presses would come into circulation in the 1970s. The number of copies that can be printed off a web offset press have been gradually increasing since then. On-line journalism has become highly popular in the last several years, not only for convenience, but also by becoming more environmentally friendly.
Johann Gutenberg: The Original Publisher.