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Printing press that prints on paper passing between a supporting cylinder and a cylinder containing the printing plates. In contrast, the flatbed press has a flat printing surface. The rotary press is used mainly in high-speed, web-fed operations in which the press takes paper from a roll, as in newspaper printing. Many of these large presses not only print as many as four colours but also cut and fold and bind in a cover, all in one continuous automatic process. Paper passes through some presses at nearly 20 mph (30 kph); large presses can print up to 60,000 copies of 128 standard-size pages in an hour. See alsoR. Hoe.
This entry comes from Encyclopædia Britannica Concise. For the full entry on rotary press, visit Britannica.com.
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