Question

Highlight the innovation which improved the printing technology in 19th and 20th century

Answer 1

invention of paper was the main reason for the development of printing presses in the these centuries

Answer 2

1) Richard M Hoe of New York perfected the power driven cylindrical press. He could print 8000 sheets per hour. His press was useful for Printing Newspapers

2) In late 19th Century saw the development of offset press capable of printing 6 colors at a time

3) Electrically operated press in early 20th Century increased the rate of printing operations

4) Methods of feeding papers improved , quality of plates became better , machines were fed up with automatic paper reels and photoelectric controls of colors register were introduced