Who had perfected the power-driven cylindrical press by the mid-19th century?

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Johann Gutenberg

S Richard

Richard M Hoe

Vivian Richard

answer is C.

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Detailed Solution

Richard M Hoe had perfected the power-driven cylindrical press by the mid-19th century. He was an American inventor who developed and produced the first successful rotary printing press. He had considerable creative talent and made continuous improvements to contemporary cylinder presses to increase production speed, quantity, and quality. The application of their ideas revolutionised the printing process. He rejected the old flatbed press, placed the model in a circular cylinder, and finally patented the 1847 model, which was developed as a hoe rotary or "lightning" press. The Philadelphia Public Ledger was first used in 1847, producing 8,000 sheets each. The printed bell is on one side. It was further improved under the name Hoe Webb Perfecting Press, first used by the New York Tribune and printed 18,000 sheets per hour on both sides. Joyce Press enabled publishers to meet the increasing demand for newspapers.

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