Printing presses

Printing machinery Printing papers Printing presses... 

U.S. International Trade Commission, Synthetic Organic Chemicals, Dyes Production and Sales (Sect. 4), Government Printing Press, Washiagton D.C., 1980-1988. 

There is considerable scholarly speculation on ancient precursors of copyright. However, no significant copyright protection existed in theory or practice until the development of the printing press, a means of mass dupHcation of creative work. The law did not need a coherent protective stmcture for written and graphic works when the only means of copying them, by hand, was so labor-intensive as to requite an investment potentially far in excess of the worth of the copy. 

The operation ol a solar-powered printing press. Experiment conducting in the Garden of Tuileries, Paris, on Aug 6, 1882, lor the festh al of "L Union Francaises of Jeuenesse." (Corbis Corporation)... 

Elisabeth Eisenstein, The printing press as an agent of ehange cormmmications and cultural transformations in early-modern Europe (Cambridge Cambridge University Press, 1979). 

---