Question

Highlights any three innovation which have in proved technology?from 19th century onwards?​

Answer 1

Answer:

(i) By the mid 19th century, Richard M. Hoe of New York had perfected the power driven cylindrical press. ... (ii) In the late 19 century, the offset press was developed which would print up to six colours at a time. (iii) From the turn of the 20th century, electrically-operated presses accelerated the printing operations.

Answer 2

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A series of other development followed.

Methods of feeding paper improved,the quality of plates became better, automatic paper rules and photoelectric controls of the colour register were introduced. The accumulation of several individual mechanical improvements transformed the appearance of printed texts.

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