Japanese printers become high-tech publishers.

Reports that at last year's Frankfurt Book Fair, the world's book publishers were formally introduced to Sony's first electronic alternative to ink on paper, the Data Discman, known as `DD1' in Japan. Hardware is Sony's; Data is compiled and the compact discs are produced by the giant printers Toppan and Dai Nippon; First standards, then markets; A tour of Toppan's new Media Center in downtown Tokyo; Applications of these new services; Extending definitions; More.